Key Points
Question
Is regular consumption of soft drinks associated with a greater risk of all-cause and cause-specific mortality?
Findings
In this population-based cohort study of 451 743 individuals from 10 countries in Europe, greater consumption of total, sugar-sweetened, and artificially sweetened soft drinks was associated with a higher risk of all-cause mortality. Consumption of artificially sweetened soft drinks was positively associated with deaths from circulatory diseases, and sugar-sweetened soft drinks were associated with deaths from digestive diseases.
Meaning
Results of this study appear to support ongoing public health measures to reduce the consumption of soft drinks.
This cohort study examines whether soft drink consumption is associated with all-cause and cause-specific mortality in a large cohort of European adults.
Abstract
Importance
Soft drinks are frequently consumed, but whether this consumption is associated with mortality risk is unknown and has been understudied in European populations to date.
Objective
To examine the association between total, sugar-sweetened, and artificially sweetened soft drink consumption and subsequent total and cause-specific mortality.
Design, Setting, and Participants
This population-based cohort study involved participants (n = 451 743 of the full cohort) in the European Prospective Investigation into Cancer and Nutrition (EPIC), an ongoing, large multinational cohort of people from 10 European countries (Denmark, France, Germany, Greece, Italy, the Netherlands, Norway, Spain, Sweden, and the United Kingdom), with participants recruited between January 1, 1992, and December 31, 2000. Excluded participants were those who reported cancer, heart disease, stroke, or diabetes at baseline; those with implausible dietary intake data; and those with missing soft drink consumption or follow-up information. Data analyses were performed from February 1, 2018, to October 1, 2018.
Exposure
Consumption of total, sugar-sweetened, and artificially sweetened soft drinks.
Main Outcomes and Measures
Total mortality and cause-specific mortality. Hazard ratios (HRs) and 95% CIs were estimated using multivariable Cox proportional hazards regression models adjusted for other mortality risk factors.
Results
In total, 521 330 individuals were enrolled. Of this total, 451 743 (86.7%) were included in the study, with a mean (SD) age of 50.8 (9.8) years and with 321 081 women (71.1%). During a mean (range) follow-up of 16.4 (11.1 in Greece to 19.2 in France) years, 41 693 deaths occurred. Higher all-cause mortality was found among participants who consumed 2 or more glasses per day (vs consumers of <1 glass per month) of total soft drinks (hazard ratio [HR], 1.17; 95% CI, 1.11-1.22; P < .001), sugar-sweetened soft drinks (HR, 1.08; 95% CI, 1.01-1.16; P = .004), and artificially sweetened soft drinks (HR, 1.26; 95% CI, 1.16-1.35; P < .001). Positive associations were also observed between artificially sweetened soft drinks and deaths from circulatory diseases (≥2 glasses per day vs <1 glass per month; HR, 1.52; 95% CI, 1.30-1.78; P < .001) and between sugar-sweetened soft drinks and deaths from digestive diseases (≥1 glass per day vs <1 glass per month; HR, 1.59; 95% CI, 1.24-2.05; P < .001).
Conclusions and Relevance
This study found that consumption of total, sugar-sweetened, and artificially sweetened soft drinks was positively associated with all-cause deaths in this large European cohort; the results are supportive of public health campaigns aimed at limiting the consumption of soft drinks.
Introduction
The frequent consumption of sugar-sweetened soft drinks increases energy intake, which can lead to weight gain and obesity.1,2,3 In 2010, the worldwide burden of adiposity-associated cardiovascular diseases, cancers, and type 2 diabetes associated with consumption of sugar-sweetened soft drinks was estimated to be 184 000 deaths.4 Reformulation of sugar-sweetened soft drinks, in which sugar is replaced with low- or no-calorie sweeteners, is being driven by consumer awareness and fiscal instruments, such as taxes.5 Artificially sweetened soft drinks have few or no calories; however, their long-term physiological and health implications are largely unknown.6,7,8
Whether regular consumption of soft drinks (total, sugar-sweetened, or artificially sweetened) is associated with greater all-cause and cause-specific mortality is uncertain, given that inconsistent findings were reported from previous prospective studies.9,10 Recently, a joint analysis of the Health Professionals Follow-up Study (HPFS) and Nurses’ Health Study (NHS) reported that a higher level of consumption of sugar-sweetened and artificially sweetened beverages was associated with greater all-cause mortality in the United States.11 Similarly, a positive association between artificially sweetened beverage consumption and all-cause mortality among US-based women was also reported by the Women’s Health Initiative Observational Study.12 Large-scale studies are required to examine the association between soft drink consumption and health outcomes, in particular research based in populations outside of the United States. To our knowledge, a large-scale European-based analysis of soft drink consumption and mortality outcomes has not been undertaken.
For cause-specific mortality, previous studies on soft drink consumption and cardiovascular disease mortality have found positive associations.11,13 However, whether these associations differed by type of circulatory diseases (eg, ischemic heart disease and cerebrovascular diseases) is uncertain. Similarly, scant data are available to date on mortality from other major chronic conditions such as cancers, digestive diseases, and neurodegenerative diseases.
We investigated the association of consuming total, sugar-sweetened, and artificially sweetened soft drinks with total and cause-specific mortality among participants in the European Prospective Investigation into Cancer and Nutrition (EPIC), an ongoing, large multinational cohort with more than 41 000 recorded deaths reported during the follow-up period.
Methods
Study Population
EPIC is a multicenter cohort of 521 330 participants who were recruited between January 1, 1992, and December 31, 2000, predominantly from the general populations of 10 European countries (Denmark, France, Germany, Greece, Italy, the Netherlands, Norway, Spain, Sweden, and the United Kingdom).14,15 Written informed consent was provided by all study participants. Ethical approval for this study was provided by the International Agency for Research on Cancer and the institutional review boards of the local participating EPIC centers.
For the current analysis, we excluded participants who at baseline reported cancer (n = 22 537), heart disease (n = 12 619), stroke (n = 3683), or diabetes (n = 12 461); participants in the highest or lowest 1% of the distribution of the ratio between energy intake to estimated energy requirement (ie, those with implausible dietary intake data; n = 8828); and participants with missing soft drink consumption or missing follow-up information (n = 9459). The final study cohort included 451 743 participants (130 662 [28.9%] men; 321 081 [71.1%] women).
Assessment of Exposure
Dietary intake was assessed during the baseline enrollment visit (1992-2000) by country-specific instruments that were developed and validated within the various source populations in EPIC.14,15 Self-administered questionnaires were used in all centers, except in Greece, Spain, and Ragusa (Italy), where data were collected during personal interviews. In Malmö (Sweden), a combined semiquantitative food frequency questionnaire and 7-day dietary diary and diet interview was used. For soft drink consumption, participants recorded the number of glasses per month, week, or day; the structure of the questions varied somewhat by country and questionnaire. The dietary questionnaires for most countries collected information on the frequency of consumption (per glass) of “low calorie or diet fizzy soft drinks,” “fizzy soft drinks, eg cola, lemonade,” and “fruit squash or cordial.” Soft drink consumption (grams per day, which is roughly equivalent to the amount in milliliters; 1 glass was equal to approximately 250 mL) was calculated using typical glass sizes in each center.
Total soft drinks referred to a combination of soft drinks, carbonated and isotonic drinks, and diluted syrups. Total soft drink consumption was subdivided into sugar-sweetened and artificially sweetened soft drink consumption for all countries except Italy, Spain, and Sweden, where types of soft drinks were unmeasured. The reproducibility and validity of the dietary questionnaires were assessed in some countries,14,15,16,17,18,19,20,21 with correlations between repeated dietary questionnaires and with 24-hour dietary records ranging from 0.46 to 0.77 for soft or nonalcoholic drinks in the Netherlands, France, Germany, and Spain. Lifestyle questionnaires, administered at recruitment, were used as a source of information on educational attainment, smoking habits, alcohol intake, physical activity, reproductive and menstrual characteristics, and other variables.
Ascertainment of Deaths
Data on vital status as well as the cause and date of death were collected by EPIC centers through record linkages with cancer registries, boards of health, and death indices in Denmark, Italy, the Netherlands, Norway, Spain, Sweden, and the United Kingdom or through active follow-up (inquiries by mail or telephone to municipal registries or regional health departments or to physicians or hospitals) in Germany, Greece, and France. For the current study, follow-up of participants from baseline (1992-2000) occurred from December 2009 to December 2013 for countries with record linkage. The end of follow-up was considered to be the last known contact with participants in France (June 2008), Germany (December 2009), and Greece (December 2012). Loss to follow-up was relatively low at 1.5%.
International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10) codes were used to classify the underlying cause of death. Deaths were grouped into common causes: cancer (ICD-10 codes C00-D48), circulatory diseases (ICD-10 codes I00-I99), and digestive diseases (ICD-10 codes K00-K93). Additional specific causes were breast cancer (ICD-10 code C50); colorectal cancer (ICD-10 code C18-C20); prostate cancer (ICD-10 code C61); cerebrovascular disease (ICD-10 codes I60-I69); ischemic heart disease (ICD-10 codes I20-I25); and the neurodegenerative diseases, Alzheimer (ICD-10 code G30) and Parkinson (ICD-10 code G20).
Statistical Analysis
Hazard ratios (HRs) and 95% CIs for mortality were estimated using Cox proportional hazards regression models with age as the primary time metric. Time at study entry was age at recruitment, and exit time was age at death or the last date at which follow-up was considered complete in each EPIC center. Models were stratified by age at recruitment in 1-year categories, sex, and EPIC center. Soft drink consumption was categorized by the frequency of glasses consumed (<1 glass per month, 1 to 4 glasses per month, >1 to 6 glasses per week, 1 to <2 glasses per day, or ≥2 glasses per day, with 1 glass being equal to 250 mL). Linear trend tests across exposure groups were evaluated using the median category variables as continuous terms. Multivariable models were adjusted for alcohol consumption; smoking status, intensity, and duration; body mass index (BMI) (calculated as weight in kilograms divided by height in meters squared); physical activity; educational status; menopausal status; ever use of menopausal hormone therapy; and dietary intakes of total energy, red and processed meats, coffee, fruit and vegetable juices, and fruits and vegetables. Further adjustment for dietary fiber intake resulted in virtually unchanged risk estimates, so this variable was not included in the final multivariable models. Sugar-sweetened and artificially sweetened soft drinks were also mutually adjusted.
The association between soft drink consumption and mortality was also assessed across subgroups of smoking status, BMI, physical activity, and alcohol consumption. Tests for interaction were performed with the likelihood ratio test of models with and without interaction terms. Heterogeneity across countries was explored using a meta-analysis approach.22 We further investigated the shape of the association between soft drink consumption and all-cause mortality using restricted cubic splines with knots defined by the midpoints of aforementioned categories. The proportional hazard assumption was satisfied using Schoenfeld residuals23 analyses.
In sensitivity analyses, we excluded BMI from the multivariable models to assess the potential mediating role of adiposity for the association between soft drinks and mortality. To investigate reverse causality, analyses were conducted excluding deaths within the first 8 years of follow-up. We examined the associations of sole consumption of sugar-sweetened and artificially sweetened soft drinks with mortality. In addition, we examined the associations between soft drink consumption and mortality according to the death ascertainment method (linkage or active follow-up), with nonconsumers of soft drinks as the reference group, and with adjustment of the multivariable models for the World Cancer Research Fund dietary score24 (rather than individual dietary covariates). As a negative control analysis, we also examined the associations between soft drink consumption and deaths from external causes. All statistical tests were 2-sided, and P < .05 was considered statistically significant. Data analyses were performed from February 1, 2018, to October 1, 2018.
Results
Patients and Characteristics
Of the EPIC cohort of 521 330 participants, 451 743 (86.7%) were included in the study, among whom were 321 081 women (71.1%) and 130 662 men (28.9%) with a mean (SD) age of 50.8 (9.8) years. After a mean (range) follow-up of 16.4 (11.1 in Greece to 19.2 in France) years, 41 693 deaths (18 302 men and 23 391 women) were recorded. Of these deaths, 18 003 (43.2%) were from cancers, 9106 (21.8%) from circulatory diseases, and 1213 (2.9%) from digestive diseases. Compared with low consumers of soft drinks (<1 glass per month, high consumers (≥2 glasses per day) were younger (mean [IQR] age at recruitment, 52.2 [46.4-58.4] years vs 50.5 [38.4-56.6] years), more likely to be current smokers (46 154 [20.5%] vs 4706 [29.1%]), and more likely to be physically active (34 907 [15.5%] vs 4501 [27.8%]) (Table 1).
Table 1. Baseline Characteristics of Participants.
| Variable | Soft Drink Consumption, Median (IQR) | |||||
|---|---|---|---|---|---|---|
| Total | Artificially Sweetened | Sugar-Sweetened | ||||
| <1 Glassa per mo | ≥2 Glassesa per d | <1 Glassa per mo | ≥2 Glassesa per d | <1 Glassa per mo | ≥2 Glassesa per d | |
| All participants, No. | 225 543 | 16 200 | 246 065 | 6292 | 195 505 | 7402 |
| All-cause deaths, No. | 21 032 | 1869 | 22 789 | 737 | 17 685 | 831 |
| Age at recruitment, y | 52.2 (46.4-58.4) | 50.5 (38.4-56.6) | 52.1 (46.1-58.4) | 51.2 (40.9-56.6) | 52.2 (46.5-58.2) | 50.7 (34.7-56.9) |
| Women, No. (%) | 172 480 (76.5) | 9864 (60.9) | 184 656 (75.0) | 4556 (72.4) | 155 705 (79.6) | 4278 (57.8) |
| BMI | 24.4 (22.1-27.3) | 25.5 (22.8-28.6) | 24.1 (21.8-26.9) | 26.1 (23.4-30.0) | 24.0 (21.8-26.8) | 24.7 (22.2-27.7) |
| Higher education (including university), No. (%) | 59 032 (26.2) | 3211 (19.8) | 69 713 (28.3) | 1303 (20.7) | 58 208 (29.8) | 1555 (21.0) |
| Current smoker, No. (%) | 46 154 (20.5) | 4706 (29.1) | 49 491 (20.1) | 1623 (25.8) | 37 203 (19.0) | 2201 (29.7) |
| Physically active, No. (%)b | 34 907 (15.5) | 4501 (27.8) | 43 357 (17.6) | 1752 (27.8) | 33 794 (17.3) | 2237 (30.2) |
| Total energy intake, kcal per d | 1969 (1609-2393) | 2231 (1802-2737) | 1982 (1630-2399) | 1973 (1612-2431) | 1923 (1578-2335) | 2357 (1939-2858) |
| Consumption, g per d | ||||||
| Red and processed meat | 66.2 (38.4-99.5) | 75.2 (34.3-117.3) | 67.6 (38.6-101.7) | 68.8 (26.3-109.6) | 66.5 (37.2-100.7) | 77.0 (28.7-122.8) |
| Fruits and vegetables | 422.0 (274.4-606.2) | 350.2 (218.1-535.2) | 394.6 (251.2-587.5) | 385.7 (244.0-579.1) | 401.3 (257.7-588.6) | 346.4 (215.3-518.0) |
| Alcohol | 5.8 (0.9-16.6) | 5.6 (1.1-14.1) | 6.0 (1.3-15.8) | 6.3 (1.4-15.1) | 6.3 (1.4-16.2) | 6.1 (1.3-14.3) |
| Coffee | 227.1 (77.0-500.0) | 476.9 (103.3-856.9) | 314.3 (140.0-542.9) | 500.0 (151.2-900.0) | 337.5 (140.0-573.0) | 476.9 (85.7-900.0) |
| Fruit and vegetable juices | 14.3 (0.0-85.7) | 17.1 (1.7-100.1) | 35.6 (3.4-106.3) | 16.8 (1.7-94.3) | 28.6 (1.7-104.3) | 18.2 (3.4-107.3) |
| Ever-use of contraceptive pill, No. (%)c | 97 195 (56.4) | 6781 (68.7) | 111 871 (60.6) | 3295 (72.3) | 97 036 (62.3) | 3021 (70.6) |
| Ever-use of menopausal hormone therapy, No. (%)c | 45 378 (26.3) | 2462 (25.0) | 51 889 (28.1) | 1317 (28.9) | 47 168 (30.3) | 992 (23.2) |
| Postmenopausal, No. (%)c | 78 158 (45.3) | 3641 (36.9) | 82 945 (44.9) | 1730 (38.0) | 70 066 (45.0) | 1561 (36.5) |
Abbreviation: IQR, interquartile range.
1 glass is equal to approximately 250 mL.
Defined as those with a sedentary job with more than 1 hour of recreational activity per day, a standing job with more than 30 minutes of recreational activity per day, a physical job with at least some recreational activity, or a heavy manual job.
Presented for women only.
Soft Drink Consumption and Mortality
All-Cause Mortality
Higher all-cause mortality was found for participants who consumed 2 or more glasses per day (vs consumers of <1 glass per month) of total soft drinks (HR, 1.17; 95% CI, 1.11-1.22; P < .001), sugar-sweetened soft drinks (HR, 1.08; 95% CI, 1.01-1.16; P = .004), and artificially sweetened soft drinks (HR, 1.26; 95% CI, 1.16-1.35; P < .001) (Table 2). Similar associations were found for men and women (Table 2). Nonlinear J-shaped associations (nonlinear P < .001) were observed between all-cause mortality and total, sugar-sweetened, and artificially sweetened soft drinks, with higher risks observed at consumption levels of more than 125 mL per day for artificially sweetened soft drinks and more than 225 mL per day of sugar-sweetened soft drinks (eFigure in the Supplement). Among participants with a BMI lower than 25 (healthy weight), positive associations with all-cause mortality were found for total soft drinks (≥1 glass per day vs <1 glass per month; HR, 1.18; 95% CI, 1.11-1.25), sugar-sweetened soft drinks (HR, 1.11; 95% CI, 1.03-1.21), and artificially sweetened soft drinks (HR, 1.27; 95% CI, 1.12-1.43) (Figure).
Table 2. Associations Between Categories of Soft Drink Consumption and All-Cause Mortality.
| Variable | HR (95% CI) | P Value for Trend | ||||
|---|---|---|---|---|---|---|
| <1 Glassa per mo | 1 to 4 Glassesa per mo | >1 to 6 Glassesa per wk | 1 to <2 Glassesa per d | ≥2 Glassesa per d | ||
| Total Soft Drinks | ||||||
| Deaths, No. | 21 032 | 5845 | 10 730 | 2217 | 1869 | NA |
| Sexes combined | ||||||
| Basic modelb | 1 [Reference] | 0.95 (0.92-0.97) | 0.98 (0.95-1.00) | 1.16 (1.11-1.22) | 1.26 (1.20-1.32) | <.001 |
| Multivariable modelc | 1 [Reference] | 0.97 (0.94-1.00) | 0.98 (0.96-1.01) | 1.10 (1.06-1.16) | 1.17 (1.11-1.22) | <.001 |
| Men | ||||||
| Multivariable modelc | 1 [Reference] | 0.96 (0.92-1.00) | 0.99 (0.95-1.02) | 1.09 (1.03-1.17) | 1.16 (1.09-1.24) | <.001 |
| Women | ||||||
| Multivariable modelc | 1 [Reference] | 0.97 (0.93-1.01) | 0.98 (0.95-1.02) | 1.12 (1.05-1.19) | 1.16 (1.08-1.25) | <.001 |
| Artificially Sweetened Soft Drink d | ||||||
| Deaths, No. | 22 789 | 2679 | 2689 | 151 | 737 | NA |
| Sexes combined | ||||||
| Basic modelb | 1 [Reference] | 0.92 (0.88-0.96) | 1.01 (0.97-1.05) | 1.09 (0.93-1.28) | 1.35 (1.25-1.45) | <.001 |
| Multivariable modelc | 1 [Reference] | 0.93 (0.89-0.97) | 1.01 (0.97-1.05) | 0.99 (0.84-1.17) | 1.26 (1.16-1.35) | <.001 |
| Men | ||||||
| Multivariable modelc | 1 [Reference] | 0.94 (0.88-1.00) | 1.06 (0.99-1.13) | 1.12 (0.86-1.44) | 1.26 (1.12-1.41) | <.001 |
| Women | ||||||
| Multivariable modelc | 1 [Reference] | 0.93 (0.88-0.99) | 0.97 (0.92-1.03) | 0.92 (0.75-1.13) | 1.24 (1.13-1.37) | <.001 |
| Sugar-Sweetened Soft Drink d | ||||||
| Deaths, No. | 17 685 | 4175 | 5420 | 934 | 831 | NA |
| Sexes combined | ||||||
| Basic modelb | 1 [Reference] | 0.91 (0.88-0.95) | 0.96 (0.93-1.00) | 1.14 (1.07-1.23) | 1.16 (1.08-1.25) | <.001 |
| Multivariable modelc | 1 [Reference] | 0.94 (0.91-0.98) | 0.96 (0.93-1.00) | 1.08 (1.01-1.16) | 1.08 (1.01-1.16) | .004 |
| Men | ||||||
| Multivariable modelc | 1 [Reference] | 0.96 (0.91-1.01) | 0.96 (0.91-1.01) | 1.03 (0.93-1.13) | 1.09 (0.99-1.20) | .05 |
| Women | ||||||
| Multivariable modelc | 1 [Reference] | 0.93 (0.89-0.98) | 0.97 (0.93-1.01) | 1.14 (1.04-1.25) | 1.06 (0.95-1.18) | .04 |
Abbreviations: HR, hazard ratio; NA, not applicable.
One glass is equal to approximately 250 mL.
Basic Cox regression model adjusted for total energy intake (kcal per day) and stratified by age (1-year categories), EPIC (European Prospective Investigation into Cancer and Nutrition) center, and sex.
Multivariable Cox regression model adjusted for body mass index, calculated as weight in kilograms divided by height in meters squared (<22, 22 to <25, 25 to <30, 30 to <35, or ≥35); physical activity index (inactive, moderately inactive, moderately active, or active); educational status (none; primary school completed; technical or professional school; secondary school; longer education, including university; or not specified); alcohol consumption (nonconsumer, <5, 5 to <15, 15 to <30, or ≥30 g per day); smoking status and intensity (never; current: 1-15 cigarettes per day; current: 16-25 cigarettes per day; current: ≥16 cigarettes per day; former: quit ≤10 y; former: quit 11-20 y; former: quit ≥20 y; current: pipe, cigar, occasional; current or former: missing; or unknown); smoking duration (<10, 10 to <20, 20 to <30, 30 to <40, ≥40 y, or smoking duration unknown); ever use of contraceptive pill (yes, no, or unknown); menopausal status (premenopausal, postmenopausal, perimenopausal or unknown menopausal status, or surgical postmenopausal); ever use of menopausal hormone therapy (yes, no, or unknown); and intakes of total energy (kcal per day), red and processed meat (g per day), fruits and vegetables (g per day), coffee (g per day), and fruit and vegetable juice (g per day) (all continuous); and stratified by age (1-year categories), EPIC center, and sex.
Sugar-sweetened and artificially sweetened soft drinks were mutually adjusted. Italy, Spain, and Sweden were excluded from these analyses because information on type of soft drink consumption was not collected.
Figure. Subgroup Analyses of the Association Between Soft Drink Consumption and All-Cause Mortality.

The hazard ratios (HRs) are for comparing participants who drank ≥1 glass per day with those who had <1 glass per month. Multivariable Cox regression model adjusted for body mass index (BMI), calculated as weight in kilograms divided by height in meters squared (<22, 22 to <25, 25 to <30, 30 to <35, or ≥35); physical activity index (inactive, moderately inactive, moderately active, or active); educational status (none; primary school completed; technical or professional school; secondary school; longer education, including university; or not specified); alcohol consumption (nonconsumer, <5, 5 to <15, 15 to <30, or ≥30 g per day); smoking status and intensity (never; current: 1-15 cigarettes per day; current: 16-25 cigarettes per day; current: ≥16 cigarettes per day; former: quit ≤10 y; former: quit 11-20 y; former: quit ≥20 y; current: pipe, cigar, occasional; current or former: missing; or unknown); smoking duration (<10, 10 to <20, 20 to <30, 30 to <40, ≥40 y, or smoking duration unknown); ever use of contraceptive pill (yes, no, or unknown); menopausal status (premenopausal, postmenopausal, perimenopausal or unknown menopausal status, or surgical postmenopausal); ever use of menopausal hormone therapy (yes, no, or unknown); and intakes of total energy (kcal per day), red and processed meat (g per day), fruits and vegetables (g per day), coffee (g per day), and fruit and vegetable juice (g per day) (all continuous); and stratified by age (1-year categories), EPIC center, and sex. Sugar-sweetened and artificially sweetened soft drinks were mutually adjusted. Italy, Spain, and Sweden were excluded from the sugar-sweetened and artificially sweetened soft drinks analyses because information on type of soft drink consumption was not collected. Median alcohol consumption was 5.4 g per day. EPIC indicates European Prospective Investigation into Cancer and Nutrition.
The soft drink consumption and all-cause mortality associations were generally consistent across subgroups of other mortality risk factors. For sugar-sweetened soft drinks, a positive association was found among participants with a BMI of 30 or higher (obese) but not among those with a BMI between 25 and under 30 (overweight) (HR, 1.23; 95% CI, 1.10-1.39 vs HR, 0.98; 95% CI, 0.90-1.06; P = .002; Figure). Results remained similar when country-specific estimates were pooled in a random-effects meta-analysis (eTable 1 in the Supplement). No heterogeneity across countries was found for artificially sweetened soft drinks and all-cause mortality (I2 = 0%; P = .86); however, heterogeneity was detected for sugar-sweetened soft drinks (I2 = 63%; P = .01), although positive associations were found for all but 1 country.
Soft Drink Consumption and Cause-Specific Mortality
Circulatory Diseases
Higher circulatory diseases mortality risk was found for participants consuming 2 or more glasses per day (vs consumers of <1 glass per month) of total soft drinks (HR, 1.27; 95% CI, 1.14-1.40; P < .001) and artificially sweetened soft drinks (HR, 1.52; 95% CI, 1.30-1.78; P < .001) but not sugar-sweetened soft drinks (HR, 1.11; 95% CI, 0.95-1.30; P = .16) (Table 3). Similar results were found for men and women. Positive associations for ischemic heart disease mortality risk were found for total soft drinks (≥1 glass per day vs <1 glass per month; HR, 1.19; 95% CI, 1.06-1.33; P = .001) and artificially sweetened soft drinks (HR, 1.41; 95% CI, 1.11-1.79; P = .003) (Table 4), with no association for sugar-sweetened soft drinks. Total soft drinks were positively associated with cerebrovascular disease mortality risk (HR, 1.30; 95% CI, 1.12-1.50; P < .001), with positive statistically nonsignificant associations found for sugar-sweetened and artificially sweetened soft drinks (Table 4).
Table 3. Multivariable Associations Between Categories of Soft Drink Consumption and Mortality From Cancers, Circulatory Diseases, or Digestive Diseasesa .
| Variable | HR (95% CI) | P Value for Trend | ||||
|---|---|---|---|---|---|---|
| <1 Glassb per mo | 1 to 4 Glassesb per mo | >1 to 6 Glassesb per wk | 1 to <2 Glassesb per d | ≥2 Glassesb per d | ||
| Cancers, ICD-10 Codes C00-D48 | ||||||
| Total soft drinks | ||||||
| Deaths, No. | 9029 | 2610 | 4787 | 845 | 732 | NA |
| Sexes combined | 1 [Reference] | 0.99 (0.95-1.04) | 1.00 (0.96-1.04) | 1.02 (0.95-1.10) | 1.02 (0.95-1.11) | .45 |
| Men | 1 [Reference] | 1.01 (0.94-1.08) | 1.03 (0.97-1.09) | 1.01 (0.91-1.13) | 1.05 (0.94-1.17) | .39 |
| Women | 1 [Reference] | 0.99 (0.93-1.05) | 0.98 (0.93-1.03) | 1.03 (0.93-1.14) | 1.00 (0.89-1.11) | .83 |
| Artificially sweetened soft drinksc | ||||||
| Deaths, No. | 9359 | 1246 | 1251 | 72 | 303 | |
| Sexes combined | 1 [Reference] | 0.96 (0.90-1.02) | 1.00 (0.94-1.06) | 0.92 (0.73-1.16) | 1.10 (0.97-1.23) | .23 |
| Men | 1 [Reference] | 0.99 (0.89-1.09) | 1.10 (0.99-1.22) | 1.13 (0.76-1.66) | 1.14 (0.95-1.37) | .06 |
| Women | 1 [Reference] | 0.95 (0.87-1.02) | 0.95 (0.88-1.02) | 0.83 (0.62-1.11) | 1.06 (0.91-1.24) | .98 |
| Sugar-sweetened soft drinksc | ||||||
| Deaths, No. | 7385 | 1797 | 2405 | 323 | 321 | NA |
| Sexes combined | 1 [Reference] | 0.95 (0.90-1.01) | 0.97 (0.92-1.02) | 0.97 (0.86-1.09) | 0.95 (0.84-1.06) | .33 |
| Men | 1 [Reference] | 1.01 (0.93-1.09) | 0.99 (0.92-1.08) | 0.98 (0.83-1.17) | 0.97 (0.83-1.14) | .69 |
| Women | 1 [Reference] | 0.92 (0.85-0.98) | 0.95 (0.89-1.01) | 0.97 (0.83-1.14) | 0.92 (0.78-1.09) | .32 |
| Circulatory Diseases, ICD-10 Codes I00-I99 | ||||||
| Total soft drinks | ||||||
| Deaths, No. | 4294 | 1272 | 2513 | 592 | 435 | NA |
| Sexes combined | 1 [Reference] | 0.96 (0.90-1.02) | 0.98 (0.93-1.03) | 1.19 (1.09-1.31) | 1.27 (1.14-1.40) | <.001 |
| Men | 1 [Reference] | 0.96 (0.88-1.05) | 0.95 (0.89-1.03) | 1.18 (1.05-1.33) | 1.23 (1.08-1.41) | <.001 |
| Women | 1 [Reference] | 0.96 (0.87-1.05) | 1.01 (0.94-1.10) | 1.21 (1.05-1.38) | 1.31 (1.11-1.54) | <.001 |
| Artificially sweetened soft drinksc | ||||||
| Deaths, No. | 4614 | 531 | 525 | 27 | 170 | NA |
| Sexes combined | 1 [Reference] | 0.91 (0.83-1.00) | 1.01 (0.92-1.11) | 1.02 (0.70-1.50) | 1.52 (1.30-1.78) | <.001 |
| Men | 1 [Reference] | 0.81 (0.71-0.94) | 1.00 (0.87-1.15) | 0.91 (0.51-1.61) | 1.53 (1.23-1.91) | <.001 |
| Women | 1 [Reference] | 1.00 (0.88-1.13) | 1.01 (0.89-1.15) | 1.13 (0.67-1.88) | 1.50 (1.19-1.88) | .001 |
| Sugar-sweetened soft drinksc | ||||||
| Deaths, No. | 3311 | 955 | 1206 | 220 | 175 | NA |
| Sexes combined | 1 [Reference] | 0.97 (0.90-1.05) | 0.96 (0.90-1.04) | 1.06 (0.92-1.22) | 1.11 (0.95-1.30) | .16 |
| Men | 1 [Reference] | 0.99 (0.89-1.10) | 0.94 (0.85-1.04) | 0.98 (0.80-1.20) | 1.11 (0.91-1.35) | .43 |
| Women | 1 [Reference] | 0.97 (0.87-1.07) | 0.99 (0.89-1.09) | 1.15 (0.94-1.40) | 1.11 (0.86-1.43) | .20 |
| Digestive Diseases, ICD-10 Codes K00-K93 d | ||||||
| Total soft drinks | ||||||
| Deaths, No. | 567 | 171 | 319 | 156 | NA | NA |
| Sexes combined | 1 [Reference] | 1.07 (0.89-1.28) | 1.16 (1.00-1.34) | 1.50 (1.24-1.81) | NA | <.001 |
| Men | 1 [Reference] | 0.96 (0.74-1.25) | 1.24 (1.01-1.52) | 1.52 (1.17-1.96) | NA | .001 |
| Women | 1 [Reference] | 1.17 (0.92-1.49) | 1.07 (0.86-1.33) | 1.45 (1.10-1.93) | NA | .02 |
| Artificially sweetened soft drinksc | ||||||
| Deaths, No. | 662 | 88 | 91 | 24 | NA | NA |
| Sexes combined | 1 [Reference] | 1.00 (0.79-1.27) | 1.19 (0.95-1.50) | 0.99 (0.65-1.50) | NA | .78 |
| Men | 1 [Reference] | 1.13 (0.80-1.59) | 1.23 (0.88-1.73) | 1.04 (0.58-1.87) | NA | .74 |
| Women | 1 [Reference] | 0.92 (0.67-1.27) | 1.14 (0.83-1.55) | 0.91 (0.51-1.64) | NA | .93 |
| Sugar-sweetened soft drinksc | ||||||
| Deaths, No. | 494 | 133 | 158 | 80 | NA | NA |
| Sexes combined | 1 [Reference] | 1.05 (0.86-1.28) | 1.07 (0.88-1.29) | 1.59 (1.24-2.05) | NA | <.001 |
| Men | 1 [Reference] | 0.94 (0.70-1.27) | 1.09 (0.83-1.43) | 1.51 (1.06-2.14) | NA | .02 |
| Women | 1 [Reference] | 1.15 (0.88-1.50) | 1.04 (0.79-1.37) | 1.67 (1.16-2.41) | NA | .01 |
Abbreviations: HR, hazard ratio; ICD-10, International Statistical Classification of Diseases and Related Health Problems, Tenth Revision; NA, not applicable.
Multivariable Cox regression model adjusted for body mass index, calculated as weight in kilograms divided by height in meters squared (<22, 22 to <25, 25 to <30, 30 to <35, or ≥35); physical activity index (inactive, moderately inactive, moderately active, or active); educational status (none; primary school completed; technical or professional school; secondary school; longer education, including university; or not specified); alcohol consumption (nonconsumer, <5, 5 to <15, 15 to <30, or ≥30 g per day); smoking status and intensity (never; current: 1-15 cigarettes per day; current: 16-25 cigarettes per day; current: ≥16 cigarettes per day; former: quit ≤10 y; former: quit 11-20 y; former: quit ≥20 y; current: pipe, cigar, occasional; current or former: missing; or unknown); smoking duration (<10, 10 to <20, 20 to <30, 30 to <40, ≥40 y, or smoking duration unknown); ever use of contraceptive pill (yes, no, or unknown); menopausal status (premenopausal, postmenopausal, perimenopausal or unknown menopausal status, or surgical postmenopausal); ever use of menopausal hormone therapy (yes, no, or unknown); and intakes of total energy (kcal per day), red and processed meat (g per day), fruits and vegetables (g per day), coffee (g per day), and fruit and vegetable juice (g per day) (all continuous); and stratified by age (1-year categories), EPIC (European Prospective Investigation into Cancer and Nutrition) center, and sex.
1 glass is equal to approximately 250 mL.
Sugar-sweetened and artificially sweetened soft drinks were mutually adjusted. Italy, Spain, and Sweden were excluded from these analyses because information on type of soft drink consumption was not collected.
Top 2 categories were merged as ≥1 glasses per day because of few cases.
Table 4. Multivariable Associations Between Categories of Soft Drink Consumption and Mortality From Cause-Specific Cancer, Circulatory Disease, or Neurodegenerative Diseasea.
| Variable | HR (95% CI) | P Value for Trend | |||
|---|---|---|---|---|---|
| <1 Glassb per mo | 1 to 4 Glassesb per mo | >1 to 6 Glassesb per wk | ≥1 Glassb per d | ||
| Colorectal Cancer, ICD-10 Codes C18-C20 (No. of Deaths = 2095) c | |||||
| Total soft drinks | 1 [Reference] | 1.00 (0.87-1.14) | 1.05 (0.94-1.18) | 1.25 (1.07-1.47) | .004 |
| Artificially sweetened soft drinksd | 1 [Reference] | 1.08 (0.91-1.28) | 1.02 (0.85-1.22) | 1.22 (0.91-1.64) | .21 |
| Sugar-sweetened soft drinksd | 1 [Reference] | 0.95 (0.81-1.11) | 1.00 (0.86-1.15) | 1.10 (0.86-1.40) | .41 |
| Breast Cancer, ICD-10 Code C50 (No. of Deaths = 1402) c | |||||
| Total soft drinks | 1 [Reference] | 0.95 (0.80-1.12) | 0.98 (0.85-1.13) | 1.13 (0.92-1.39) | .20 |
| Artificially sweetened soft drinksd | 1 [Reference] | 0.79 (0.63-0.98) | 0.90 (0.74-1.10) | 0.85 (0.59-1.22) | .38 |
| Sugar-sweetened soft drinksd | 1 [Reference] | 0.87 (0.71-1.06) | 1.07 (0.90-1.27) | 1.21 (0.91-1.62) | .10 |
| Prostate Cancer, ICD-10 Code C61 (No. of Deaths = 907) c | |||||
| Total soft drinks | 1 [Reference] | 1.03 (0.85-1.25) | 1.03 (0.88-1.22) | 0.97 (0.77-1.24) | .80 |
| Artificially sweetened soft drinksd | 1 [Reference] | 1.23 (0.95-1.60) | 1.36 (1.05-1.78) | 1.05 (0.64-1.75) | .53 |
| Sugar-sweetened soft drinksd | 1 [Reference] | 1.14 (0.91-1.42) | 1.05 (0.84-1.32) | 1.08 (0.77-1.51) | .76 |
| Cerebrovascular Diseases, ICD-10 Codes I60-I69 (No. of Deaths = 2380) c | |||||
| Total soft drinks | 1 [Reference] | 1.00 (0.88-1.13) | 0.97 (0.87-1.08) | 1.30 (1.12-1.50) | <.001 |
| Artificially sweetened soft drinksd | 1 [Reference] | 0.85 (0.71-1.03) | 1.06 (0.89-1.27) | 1.24 (0.91-1.70) | .12 |
| Sugar-sweetened soft drinksd | 1 [Reference] | 0.97 (0.84-1.12) | 0.99 (0.87-1.14) | 1.19 (0.97-1.47) | .10 |
| Ischemic Heart Disease, ICD-10 Codes I20-I25 (No. of Deaths = 3536) c | |||||
| Total soft drinks | 1 [Reference] | 0.94 (0.84-1.04) | 0.99 (0.91-1.07) | 1.19 (1.06-1.33) | .001 |
| Artificially sweetened soft drinksd | 1 [Reference] | 0.89 (0.76-1.04) | 1.06 (0.91-1.23) | 1.41 (1.11-1.79) | .003 |
| Sugar-sweetened soft drinksd | 1 [Reference] | 1.03 (0.91-1.16) | 0.95 (0.85-1.07) | 1.04 (0.87-1.23) | .84 |
| Parkinson Disease, ICD-10 Code G20 (No. of Deaths = 254) c | |||||
| Total soft drinks | 1 [Reference] | 0.90 (0.60-1.33) | 0.81 (0.58-1.14) | 1.59 (1.07-2.36) | .02 |
| Artificially sweetened soft drinksd | 1 [Reference] | 0.84 (0.48-1.49) | 1.23 (0.73-2.06) | 1.50 (0.64-3.48) | .27 |
| Sugar-sweetened soft drinksd | 1 [Reference] | 0.91 (0.59-1.43) | 0.90 (0.58-1.39) | 1.39 (0.79-2.43) | .25 |
| Alzheimer Disease, ICD-10 Code G30 (No. of Deaths = 453) c | |||||
| Total soft drinks | 1 [Reference] | 1.23 (0.93-1.62) | 1.13 (0.89-1.44) | 0.82 (0.53-1.26) | .33 |
| Artificially sweetened soft drinksd | 1 [Reference] | 0.94 (0.57-1.55) | 1.20 (0.72-1.98) | 0.57 (0.14-2.33) | .59 |
| Sugar-sweetened soft drinksd | 1 [Reference] | 1.11 (0.75-1.65) | 1.35 (0.94-1.96) | 0.90 (0.44-1.81) | .99 |
Abbreviations: HR, hazard ratio; ICD-10, International Statistical Classification of Diseases and Related Health Problems, Tenth Revision.
Multivariable Cox regression model adjusted for body mass index, calculated as weight in kilograms divided by height in meters squared (<22, 22 to <25, 25 to <30, 30 to <35, or ≥35); physical activity index (inactive, moderately inactive, moderately active, or active); educational status (none; primary school completed; technical or professional school; secondary school; longer education, including university; or not specified); alcohol consumption (nonconsumer, <5, 5 to <15, 15 to <30, or ≥30 g per day); smoking status and intensity (never; current: 1-15 cigarettes per day; current: 16-25 cigarettes per day; current: ≥16 cigarettes per day; former: quit ≤10 y; former: quit 11-20 y; former: quit ≥20 y; current: pipe, cigar, occasional; current or former: missing; or unknown); smoking duration (<10, 10 to <20, 20 to <30, 30 to <40, ≥40 y, or smoking duration unknown); ever use of contraceptive pill (yes, no, or unknown); menopausal status (premenopausal, postmenopausal, perimenopausal or unknown menopausal status, or surgical postmenopausal); ever use of menopausal hormone therapy (yes, no, or unknown); and intakes of total energy (kcal per day), red and processed meat (g per day), fruits and vegetables (g per day), coffee (g per day), and fruit and vegetable juice (g per day) (all continuous); and stratified by age (1-year categories), EPIC (European Prospective Investigation into Cancer and Nutrition) center, and sex.
One glass is equal to approximately 250 mL.
Number of deaths based on total soft drink consumption models.
Sugar-sweetened and artificially sweetened soft drinks were mutually adjusted. Italy, Spain, and Sweden were excluded from these analyses because information on type of soft drink consumption was not collected.
Cancer
Total, sugar-sweetened, and artificially sweetened soft drink consumption was not associated with risk of deaths from overall cancer (Table 3), breast cancer, or prostate cancer (Table 4). Total soft drink consumption was positively associated with colorectal cancer deaths (≥1 glass per day vs <1 glass per month; HR, 1.25; 95% CI, 1.07-1.47; P = .004) (Table 4), with statistically nonsignificant associations found for sugar-sweetened and artificially sweetened soft drinks.
Digestive Diseases
Higher level of consumption of total soft drinks and sugar-sweetened soft drinks (≥1 glass per day vs <1 glass per month; HR, 1.59; 95% CI, 1.24-2.05; P < .001), but not artificially sweetened soft drinks, was associated with digestive disease mortality. Similar associations were found for men and women (Table 3).
Neurodegenerative Diseases
Total soft drink consumption was positively associated with risk of Parkinson disease mortality (≥1 glass per day vs <1 glass per month; HR, 1.59; 95% CI, 1.07-2.36; P = .02), with similar magnitude nonsignificant associations found for artificially sweetened and sugar-sweetened soft drinks (Table 4). Soft drinks were not associated with Alzheimer disease mortality.
Sensitivity Analyses
Sugar-sweetened and artificially sweetened soft drink consumption was positively associated with circulatory disease and digestive disease mortality among participants with a healthy weight (eTable 2 in the Supplement). Similar positive associations between soft drink consumption and mortality outcomes were found when the multivariable models excluded BMI adjustment (eTable 3 in the Supplement), deaths that occurred during the first 8 years of follow-up were excluded (eTable 4 in the Supplement), nonconsumers of soft drinks were set as the reference group (eTable 5 in the Supplement), and multivariable models were adjusted for the World Cancer Research Fund dietary score rather than individual dietary covariates (eTable 6 in the Supplement). A similar pattern of results for all mortality end points was found for sole consumers of artificially sweetened and sugar-sweetened soft drinks (eTable 7 in the Supplement). The positive sugar-sweetened association was stronger for countries with active follow-up, compared with those with linkage follow-up (eTable 8 in the Supplement). No associations were found between soft drink consumption and deaths by external causes (eTable 9 in the Supplement).
Discussion
In this large multinational European study, higher level of consumption of total, sugar-sweetened, and artificially sweetened soft drinks was associated with increased risk of death from all causes. The positive association between soft drink consumption and mortality was evident for both men and women. Only artificially sweetened, and not sugar-sweetened, soft drinks were associated with deaths from circulatory diseases, whereas for digestive disease deaths, only sugar-sweetened soft drinks were associated with higher risk.
The high level of consumption of sugar-sweetened and artificially sweetened soft drinks has previously been linked to elevated risks of obesity, type 2 diabetes, and cardiovascular disease.1,25,26,27 We found that sugar-sweetened soft drinks were positively associated with all-cause mortality, a result consistent with findings from an HPFS/NHS analysis11 but inconsistent with findings from smaller Singapore- and US-based studies.10,28 We also found positive associations between consumption of artificially sweetened soft drinks and all-cause mortality, a finding consistent with results of the HPFS/NHS and Women’s Health Initiative studies.11,12 Overall, to our knowledge, this current study was the largest to date to investigate the associations between soft drink consumption and mortality outcomes as well as the first comprehensive European-based analysis.
We found nonlinear J-shaped associations for soft drink consumption and all-cause mortality, with higher risks observed at consumption levels of more than 125 mL per day (half a glass) of artificially sweetened soft drinks and more than 225 mL per day (approximately 1 glass) of sugar-sweetened soft drinks, and the lowest risks found from drinking 50 mL per day. The reduced risk found at low consumption levels may be the result of reverse causality (analogous to what has been observed for alcohol consumption and all-cause mortality29,30,31), driven by participants with disease symptoms reporting nonconsumption of soft drinks.
The role of BMI in the soft drink consumption and mortality outcomes association is complex, with adiposity likely a mediating and confounding factor that varies by cause of death. In our analyses, results were unchanged between the multivariable models with or without BMI adjustment, suggesting that the observed associations may be independent of adiposity. In support of this hypothesis, positive associations were found between total, sugar-sweetened, and artificially sweetened soft drinks with deaths from all causes, circulatory diseases, and digestive diseases among participants with healthy weight. These results may suggest that soft drinks alter mortality risk independently of adiposity, possibly because of the high glycemic index of sugar-sweetened soft drinks,32 which elevates blood glucose levels and may in turn lead to insulin resistance and inflammation.33,34
For sugar-sweetened soft drinks, we found a positive association with all-cause mortality for participants who were obese but no association for participants who were overweight. The lack of association among overweight participants is inconsistent with the result of an analysis of the HPFS/NHS study, which found a positive association with all-cause mortality among overweight adults.11 It is unclear why we observed a positive association for sugar-sweetened soft drinks among obese but not among overweight participants. We cannot exclude the role of chance in these subgroup analyses, and additional large-scale prospective studies are required to examine these associations further.
In cause-specific analyses, we found positive associations between artificially sweetened soft drink consumption and deaths from circulatory diseases; these results are consistent with those in the HPFS/NHS and Women’s Health Initiative analyses.11,13 These results were largely based on the positive association between ischemic heart disease deaths and consumption of artificially sweetened soft drinks. Reverse causality is a possible explanation for this positive association, with unhealthy individuals at the study baseline (eg, those who were overweight or obese; those with prediabetes) switching from drinking sugar-sweetened to artificially sweetened soft drinks to control their body weight. However, this association persisted when deaths recorded in the first 8 years of follow-up were excluded. In addition, positive associations between artificially sweetened soft drinks and all-cause and circulatory diseases mortality were found among participants with healthy weight. Possible biological mechanisms that may explain the positive associations between artificially sweetened soft drinks and mortality outcomes are unclear. Limited experimental evidence suggests that artificial sweeteners may induce glucose intolerance,35 but further studies are needed into the possible adverse effects of the long-term consumption of artificial sweeteners commonly used in soft drinks, such as aspartame and acesulfame potassium.36
A higher level of soft drink consumption was associated with greater risk of death from digestive diseases, with a positive association only found for sugar-sweetened soft drinks. Hyperglycemia resulting from consumption of sugar-sweetened soft drinks may alter gut-barrier function and increase the risk of enteric infection.37 Furthermore, fructose, a sugar commonly used in soft drinks, promotes liver lipogenesis, which can lead to nonalcoholic fatty liver disease and lower insulin sensitivity.38,39,40
We observed no association between soft drink consumption and overall cancer mortality. This result is consistent with findings in most previous studies, which found little evidence of a direct association between soft drink consumption and cancer risk,2 but it is inconsistent with that in the HPFS/NHS analysis, which reported a positive association between sugar-sweetened beverages and cancer mortality.11 We did observe a positive association between total soft drink consumption and risk of colorectal cancer mortality, but our analyses could not ascertain whether sugar-sweetened or artificially sweetened soft drinks were factors in this association. In the HPFS/NHS analysis, a borderline positive association was observed between sugar-sweetened beverages and colon cancer mortality.11 Further studies into soft drinks and cancer are warranted to identify whether direct or indirect (through weight gain or overweight or obesity status, which are strong risk factors for multiple cancers41) associations exist for various cancer types.
In addition, we observed that a higher level of total soft drink consumption was associated with greater risk of Parkinson disease mortality, with positive nonsignificant associations found for sugar-sweetened and artificially sweetened soft drinks. To our knowledge, this study is the first to link soft drink consumption with Parkinson disease, and additional studies are required to examine this association.
Limitations
To our knowledge, this study is the largest to date to investigate the association between soft drink consumption and mortality. However, it has several limitations. Given the observational design of the study, it is not possible to establish causality between soft drink consumption and mortality, and we recognize that the observed associations may be biased because of residual confounding. However, the large number of participants and recorded deaths (approximately 42 000) allowed us to conduct analyses by subgroups of other mortality risk factors, and we generally observed similar associations across subgroups of considered risk factors. Furthermore, the negative control analysis found no association between consumption of soft drinks and deaths from external causes. This study was also limited by a single assessment of soft drink consumption at baseline.
Conclusions
In this study, the high level of consumption of total, sugar-sweetened, and artificially sweetened soft drinks was associated with elevated risks of death from all causes. Positive associations were observed between sugar-sweetened soft drinks and digestive disease deaths as well as between artificially sweetened soft drinks and circulatory disease deaths. Further studies are needed to investigate the possible adverse health effects of artificial sweeteners. The results of this study are supportive of ongoing public health campaigns aimed at reducing the consumption of soft drinks.
eFigure. Hazard Ratio (HR) Functions and Corresponding 95% CIs Describing the Linear (Light Blue) and the Curve-Linear (Dark Blue) Dose–Response Relationship Between Soft Drinks Consumption (mL/d) and All-Cause Mortality Risk, According to Death Frequencies
eTable 1. Analysis of Association Between Soft Drinks Consumption and All-Cause Mortality by Country
eTable 2. Body Mass Index Subgroup Analysis of Association Between Artificially Sweetened and Sugar-Sweetened Soft Drinks Consumption and All-Cause and Cause-Specific Mortality
eTable 3. Multivariable Associations of Categories of Soft Drinks Consumption and All-Cause and Cause-Specific Mortality With and Without Adjustment for Body Mass Index (Sexes Combined)
eTable 4. Multivariable Associations of Categories of Soft Drinks Consumption and All-Cause and Cause-Specific Mortality With Deaths That Occurred During the First 8 Years of Follow-up Excluded
eTable 5. Multivariable Associations of Categories of Soft Drinks Consumption and All-Cause and Cause-Specific Mortality With Non-Consumers as the Reference Group
eTable 6. Multivariable Associations of Categories of Soft Drinks Consumption and All-Cause and Cause-Specific Mortality With Adjustment for an Adapted Version of the WCRF Dietary Score (Rather than Individual Dietary Covariates)
eTable 7. Associations of Categories of Artificially Sweetened and Sugar-Sweetened Soft Drinks Consumption With All-Cause and Cause-Specific Mortality Among Participants Who Solely Consumed Sugar-Sweetened or Artificially Sweetened Soft Drinks
eTable 8. Multivariable Associations of Categories of Soft Drinks Consumption and All-Cause Mortality by Ascertainment of Death Method
eTable 9. Multivariable Associations of Categories of Soft Drinks Consumption and Deaths Due to External Causes (ICD-10 Codes S00-Y98)
References
- 1.Malik VS, Pan A, Willett WC, Hu FB. Sugar-sweetened beverages and weight gain in children and adults: a systematic review and meta-analysis. Am J Clin Nutr. 2013;98(4):1084-1102. doi: 10.3945/ajcn.113.058362 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 2.World Cancer Research Fund, American Institute for Cancer Research. Continuous update project expert report 2018. Diet, nutrition and physical activity and cancer: energy balance and obesity. https://www.wcrf.org/sites/default/files/Summary-of-Third-Expert-Report-2018.pdf. Accessed November 4, 2018.
- 3.Luger M, Lafontan M, Bes-Rastrollo M, Winzer E, Yumuk V, Farpour-Lambert N. Sugar-sweetened beverages and weight gain in children and adults: a systematic review from 2013 to 2015 and a comparison with previous studies. Obes Facts. 2017;10(6):674-693. doi: 10.1159/000484566 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 4.Singh GM, Micha R, Khatibzadeh S, Lim S, Ezzati M, Mozaffarian D; Global Burden of Diseases Nutrition and Chronic Diseases Expert Group (NutriCoDE) . Estimated global, regional, and national disease burdens related to sugar-sweetened beverage consumption in 2010. Circulation. 2015;132(8):639-666. doi: 10.1161/CIRCULATIONAHA.114.010636 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 5.World Cancer Research Fund International . Building momentum: lessons on implementing a robust sugar sweetened beverage tax. https://www.wcrf.org/int/policy/our-publications/building-momentum-lessons-implementing-evidence-informed-nutrition. Accessed November 4, 2018.
- 6.Appleton KM, Tuorila H, Bertenshaw EJ, de Graaf C, Mela DJ. Sweet taste exposure and the subsequent acceptance and preference for sweet taste in the diet: systematic review of the published literature. Am J Clin Nutr. 2018;107(3):405-419. doi: 10.1093/ajcn/nqx031 [DOI] [PubMed] [Google Scholar]
- 7.Borges MC, Louzada ML, de Sá TH, et al. Artificially sweetened beverages and the response to the global obesity crisis. PLoS Med. 2017;14(1):e1002195. doi: 10.1371/journal.pmed.1002195 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 8.Mattes RD, Popkin BM. Nonnutritive sweetener consumption in humans: effects on appetite and food intake and their putative mechanisms. Am J Clin Nutr. 2009;89(1):1-14. doi: 10.3945/ajcn.2008.26792 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 9.Barrington WE, White E. Mortality outcomes associated with intake of fast-food items and sugar-sweetened drinks among older adults in the Vitamins and Lifestyle (VITAL) study. Public Health Nutr. 2016;19(18):3319-3326. doi: 10.1017/S1368980016001518 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 10.Odegaard AO, Koh WP, Yuan JM, Pereira MA. Beverage habits and mortality in Chinese adults. J Nutr. 2015;145(3):595-604. doi: 10.3945/jn.114.200253 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 11.Malik VS, Li Y, Pan A, et al. Long-term consumption of sugar-sweetened and artificially sweetened beverages and risk of mortality in US adults. Circulation. 2019;139(18):2113-2125. doi: 10.1161/CIRCULATIONAHA.118.037401 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 12.Mossavar-Rahmani Y, Kamensky V, Manson JE, et al. Artificially sweetened beverages and stroke, coronary heart disease, and all-cause mortality in the Women’s Health Initiative. Stroke. 2019;50(3):555-562. doi: 10.1161/STROKEAHA.118.023100 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 13.Vyas A, Rubenstein L, Robinson J, et al. Diet drink consumption and the risk of cardiovascular events: a report from the Women’s Health Initiative. J Gen Intern Med. 2015;30(4):462-468. doi: 10.1007/s11606-014-3098-0 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 14.Riboli E, Kaaks R. The EPIC project: rationale and study design. European Prospective Investigation into Cancer and Nutrition. Int J Epidemiol. 1997;26(suppl 1):S6-S14. doi: 10.1093/ije/26.suppl_1.S6 [DOI] [PubMed] [Google Scholar]
- 15.Riboli E, Hunt KJ, Slimani N, et al. European Prospective Investigation into Cancer and Nutrition (EPIC): study populations and data collection. Public Health Nutr. 2002;5(6B):1113-1124. doi: 10.1079/PHN2002394 [DOI] [PubMed] [Google Scholar]
- 16.Kaaks R, Slimani N, Riboli E. Pilot phase studies on the accuracy of dietary intake measurements in the EPIC project: overall evaluation of results. European Prospective Investigation into Cancer and Nutrition. Int J Epidemiol. 1997;26(suppl 1):S26-S36. doi: 10.1093/ije/26.suppl_1.S26 [DOI] [PubMed] [Google Scholar]
- 17.van Liere MJ, Lucas F, Clavel F, Slimani N, Villeminot S. Relative validity and reproducibility of a French dietary history questionnaire. Int J Epidemiol. 1997;26(suppl 1):S128-S136. doi: 10.1093/ije/26.suppl_1.S128 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 18.Bohlscheid-Thomas S, Hoting I, Boeing H, Wahrendorf J. Reproducibility and relative validity of food group intake in a food frequency questionnaire developed for the German part of the EPIC project. European Prospective Investigation into Cancer and Nutrition. Int J Epidemiol. 1997;26(suppl 1):S59-S70. doi: 10.1093/ije/26.suppl_1.S59 [DOI] [PubMed] [Google Scholar]
- 19.Ocké MC, Bueno-de-Mesquita HB, Goddijn HE, et al. The Dutch EPIC food frequency questionnaire. I. Description of the questionnaire, and relative validity and reproducibility for food groups. Int J Epidemiol. 1997;26(suppl 1):S37-S48. doi: 10.1093/ije/26.suppl_1.S37 [DOI] [PubMed] [Google Scholar]
- 20.Pisani P, Faggiano F, Krogh V, Palli D, Vineis P, Berrino F. Relative validity and reproducibility of a food frequency dietary questionnaire for use in the Italian EPIC centres. Int J Epidemiol. 1997;26(suppl 1):S152-S160. doi: 10.1093/ije/26.suppl_1.S152 [DOI] [PubMed] [Google Scholar]
- 21.EPIC-SPAIN . Relative validity and reproducibility of a diet history questionnaire in Spain. I. Foods. EPIC Group of Spain. European Prospective Investigation into Cancer and Nutrition. Int J Epidemiol. 1997;26(suppl 1):S91-S99. doi: 10.1093/ije/26.suppl_1.S91 [DOI] [PubMed] [Google Scholar]
- 22.Greenland S, Longnecker MP. Methods for trend estimation from summarized dose-response data, with applications to meta-analysis. Am J Epidemiol. 1992;135(11):1301-1309. doi: 10.1093/oxfordjournals.aje.a116237 [DOI] [PubMed] [Google Scholar]
- 23.Schoenfeld D. Partial residuals for the proportional hazards regression model. Biometrika. 1982;69(1):239-241. doi: 10.1093/biomet/69.1.239 [DOI] [Google Scholar]
- 24.Romaguera D, Vergnaud A-C, Peeters PH, et al. Is concordance with World Cancer Research Fund/American Institute for Cancer Research guidelines for cancer prevention related to subsequent risk of cancer? Results from the EPIC study. Am J Clin Nutr. 2012;96(1):150-163. doi: 10.3945/ajcn.111.031674 [DOI] [PubMed] [Google Scholar]
- 25.Imamura F, O’Connor L, Ye Z, et al. Consumption of sugar sweetened beverages, artificially sweetened beverages, and fruit juice and incidence of type 2 diabetes: systematic review, meta-analysis, and estimation of population attributable fraction. BMJ. 2015;351:h3576. doi: 10.1136/bmj.h3576 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 26.Huang C, Huang J, Tian Y, Yang X, Gu D. Sugar sweetened beverages consumption and risk of coronary heart disease: a meta-analysis of prospective studies. Atherosclerosis. 2014;234(1):11-16. doi: 10.1016/j.atherosclerosis.2014.01.037 [DOI] [PubMed] [Google Scholar]
- 27.Huang M, Quddus A, Stinson L, et al. Artificially sweetened beverages, sugar-sweetened beverages, plain water, and incident diabetes mellitus in postmenopausal women: the prospective Women’s Health Initiative observational study. Am J Clin Nutr. 2017;106(2):614-622. doi: 10.3945/ajcn.116.145391 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 28.Paganini-Hill A, Kawas CH, Corrada MM. Non-alcoholic beverage and caffeine consumption and mortality: the Leisure World Cohort Study. Prev Med. 2007;44(4):305-310. doi: 10.1016/j.ypmed.2006.12.011 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 29.Thun MJ, Peto R, Lopez AD, et al. Alcohol consumption and mortality among middle-aged and elderly U.S. adults. N Engl J Med. 1997;337(24):1705-1714. doi: 10.1056/NEJM199712113372401 [DOI] [PubMed] [Google Scholar]
- 30.Ferrari P, Licaj I, Muller DC, et al. Lifetime alcohol use and overall and cause-specific mortality in the European Prospective Investigation into Cancer and nutrition (EPIC) study. BMJ Open. 2014;4(7):e005245. doi: 10.1136/bmjopen-2014-005245 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 31.Millwood IY, Walters RG, Mei XW, et al. ; China Kadoorie Biobank Collaborative Group . Conventional and genetic evidence on alcohol and vascular disease aetiology: a prospective study of 500000 men and women in China. Lancet. 2019;393(10183):1831-1842. doi: 10.1016/S0140-6736(18)31772-0 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 32.Atkinson FS, Foster-Powell K, Brand-Miller JC. International tables of glycemic index and glycemic load values: 2008. Diabetes Care. 2008;31(12):2281-2283. doi: 10.2337/dc08-1239 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 33.Hu FB, Malik VS. Sugar-sweetened beverages and risk of obesity and type 2 diabetes: epidemiologic evidence. Physiol Behav. 2010;100(1):47-54. doi: 10.1016/j.physbeh.2010.01.036 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 34.Liu S, Manson JE, Buring JE, Stampfer MJ, Willett WC, Ridker PM. Relation between a diet with a high glycemic load and plasma concentrations of high-sensitivity C-reactive protein in middle-aged women. Am J Clin Nutr. 2002;75(3):492-498. doi: 10.1093/ajcn/75.3.492 [DOI] [PubMed] [Google Scholar]
- 35.Suez J, Korem T, Zeevi D, et al. Artificial sweeteners induce glucose intolerance by altering the gut microbiota. Nature. 2014;514(7521):181-186. doi: 10.1038/nature13793 [DOI] [PubMed] [Google Scholar]
- 36.Mortensen A. Sweeteners permitted in the European Union: safety aspects. Scandinavian Journal of Food and Nutrition. 2006;50(3):104-116. doi: 10.1080/17482970600982719 [DOI] [Google Scholar]
- 37.Thaiss CA, Levy M, Grosheva I, et al. Hyperglycemia drives intestinal barrier dysfunction and risk for enteric infection. Science. 2018;359(6382):1376-1383. doi: 10.1126/science.aar3318 [DOI] [PubMed] [Google Scholar]
- 38.Stanhope KL. Role of fructose-containing sugars in the epidemics of obesity and metabolic syndrome. Annu Rev Med. 2012;63:329-343. doi: 10.1146/annurev-med-042010-113026 [DOI] [PubMed] [Google Scholar]
- 39.Tappy L. Fructose-containing caloric sweeteners as a cause of obesity and metabolic disorders. J Exp Biol. 2018;221(Pt)(suppl 1):jeb164202. doi: 10.1242/jeb.164202 [DOI] [PubMed] [Google Scholar]
- 40.Jensen T, Abdelmalek MF, Sullivan S, et al. Fructose and sugar: a major mediator of non-alcoholic fatty liver disease. J Hepatol. 2018;68(5):1063-1075. doi: 10.1016/j.jhep.2018.01.019 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 41.Murphy N, Jenab M, Gunter MJ. Adiposity and gastrointestinal cancers: epidemiology, mechanisms and future directions. Nat Rev Gastroenterol Hepatol. 2018;15(11):659-670. doi: 10.1038/s41575-018-0038-1 [DOI] [PubMed] [Google Scholar]
Associated Data
This section collects any data citations, data availability statements, or supplementary materials included in this article.
Supplementary Materials
eFigure. Hazard Ratio (HR) Functions and Corresponding 95% CIs Describing the Linear (Light Blue) and the Curve-Linear (Dark Blue) Dose–Response Relationship Between Soft Drinks Consumption (mL/d) and All-Cause Mortality Risk, According to Death Frequencies
eTable 1. Analysis of Association Between Soft Drinks Consumption and All-Cause Mortality by Country
eTable 2. Body Mass Index Subgroup Analysis of Association Between Artificially Sweetened and Sugar-Sweetened Soft Drinks Consumption and All-Cause and Cause-Specific Mortality
eTable 3. Multivariable Associations of Categories of Soft Drinks Consumption and All-Cause and Cause-Specific Mortality With and Without Adjustment for Body Mass Index (Sexes Combined)
eTable 4. Multivariable Associations of Categories of Soft Drinks Consumption and All-Cause and Cause-Specific Mortality With Deaths That Occurred During the First 8 Years of Follow-up Excluded
eTable 5. Multivariable Associations of Categories of Soft Drinks Consumption and All-Cause and Cause-Specific Mortality With Non-Consumers as the Reference Group
eTable 6. Multivariable Associations of Categories of Soft Drinks Consumption and All-Cause and Cause-Specific Mortality With Adjustment for an Adapted Version of the WCRF Dietary Score (Rather than Individual Dietary Covariates)
eTable 7. Associations of Categories of Artificially Sweetened and Sugar-Sweetened Soft Drinks Consumption With All-Cause and Cause-Specific Mortality Among Participants Who Solely Consumed Sugar-Sweetened or Artificially Sweetened Soft Drinks
eTable 8. Multivariable Associations of Categories of Soft Drinks Consumption and All-Cause Mortality by Ascertainment of Death Method
eTable 9. Multivariable Associations of Categories of Soft Drinks Consumption and Deaths Due to External Causes (ICD-10 Codes S00-Y98)
