TABLE 3.
Summary of RCTs comparing the impacts of eating yogurt or cheese on biomarkers of inflammation1
Study and reference | Type of study | Participants | Inflammatory markers assessed | Intervention | Results |
---|---|---|---|---|---|
Pei et al. (76) | RCT | n = 120 premenopausal females (60 with obesity and 60 without obesity) | IL-6, TNF-α, soluble TNF II (sTNF-RII), hs-CRP, LBP:sCD14 | Participants consumed 339 g of yogurt or 324 g of soy pudding daily for 9 wk. | Eating low-fat yogurt over a 9-wk period modestly reduced fasting biomarkers of chronic inflammation and low-grade endotoxemia in women relative to those consuming the nondairy control food. |
Pei et al. (34) | RCT | n = 120 premenopausal females (60 with obesity and 60 without obesity) | IL-6, TNF-α, LBP:sCD14 | Participants consumed either 226 g of a commercial low-fat yogurt or a nondairy soy pudding control snack (n = 30 participants/group) with similar macronutrient content immediately prior to consuming a high-fat, high-calorie challenge meal. | Premeal yogurt consumption modestly reduced acute postprandial inflammation induced by the high-fat, high-calorie challenge meal. |
Burton et al. (54) | Randomized, double-blind crossover trial | n = 14 healthy males of normal weight | TNF-α, IL-6 | Participants consumed either yogurt supplemented with Lactobacillus rhamnosus GG or acidified milk. Each trial phase included a 4-wk run-in period, during which participants consumed 400 mL per day of whole milk, followed by a 2-wk intervention phase during which participants consumed 400 g/d of yogurt or acidified milk and underwent 2 postprandial tests. The first day of each intervention, the postprandial response of participants to 800 g of their assigned intervention foods was assessed. At the end of the intervention period, participants consumed 400 g of the intervention food prior to a high-fat challenge meal. | Both probiotic yogurt and acidified milk reduced postprandial inflammatory markers linked to high-fat meals |
Schmid et al. (58) | Randomized crossover trial | n = 19 healthy males (age: 41.8 ± 9.0 y) with BMI of 27.8 ± 8.2 kg/m2 | CRP, IL-6, TNF-α | Participants randomized to consume: a high-fat dairy meal, high-fat nondairy meal eaten with milk, and a high-fat nondairy control meal. | Dairy fat, largely from cheese, did not impact measures of postprandial inflammation relative to other nondairy mixed meals. |
Brassard et al. (55) | RCT | n = 92 males and females with abdominal obesity defined as waist circumference ≥94 cm for men or ≥80 cm for women | hs-CRP | Participants consumed 1 of 5 diets for 4 wk each with 4-wk washouts in between: a diet rich in saturated fat from cheese, a diet rich in saturated fat from butter, a diet rich in MUFAs, a diet rich in PUFAs, or a low-fat, high-carbohydrate diet. | Concentrations of hs-CRP were not different between interventions. The intake of cheese relative to other fat sources, and even compared to a low-fat diet, did not impact hs-CRP. |
CRP, C-reactive protein; hs-CRP, high-sensitivity C-reactive protein; LBP, LPS binding protein; RCT, randomized controlled trial.