Abstract
Poor psychological health has been consistently documented for sexually minoritized women. However, little is known about the association between poor psychological health and physical health. This study examined associations between psychological distress and cardiometabolic health, including cardiovascular disease risk conditions (hypertension, high cholesterol, and diabetes) and diagnoses (stroke, coronary heart disease, myocardial infarction, and angina), by sexual identity among women. Data are from the 2013–2018 National Health Interview Survey and included 102,279 women, who were straight (n = 97,909), lesbian/gay (n = 1,424), bisexual (n = 1,235), something else (n = 360), did not know (n = 712), and refused to disclose (n = 639). Multivariable multinomial logistic regression models were fit to estimate associations between psychological distress (measured with Kessler-6) and cardiometabolic health (self-reported diagnosis) and to examine sexual-identity differences in these associations. Covariates included sociodemographic characteristics. Overall, severe psychological distress was associated with significantly higher odds of having a cardiometabolic health condition (OR = 2.66). These associations generally did not statistically significantly differ based on sexual identity. However, potential substantive differences in the magnitude of the association existed among lesbian/gay (OR = 4.00) compared to straight women (OR = 2.73). Moreover, women who identified as gay/lesbian, bisexual, “something else,” or “I don’t know” all reported significantly higher prevalence of severe psychological distress than straight women. Given the overall positive association between psychological distress and cardiometabolic health as well as the higher prevalence of severe psychological distress among sexual minority women, more work is needed to longitudinally examine the effects of psychological distress on health among sexually minoritized women.
Keywords: sexual identity, health disparities, psychological distress, cardiometabolic health
Sexual minority women, including individuals who identify as lesbian, gay, or bisexual (LGB) may be at greater risk than straight women for cardiovascular disease (CVD; Alshehri, 2010; Caceres et al., 2020; Lick et al., 2013; National Heart Lung and Blood Institute, 2022). This risk, in part, is likely due to high prevalence of factors such as poor mental health, tobacco use, and excessive alcohol consumption (Caceres et al., 2017).
Despite the elevated risk for poor cardiometabolic health among sexual minority women, a 2017 review by Caceres et al. found very few differences in cardiometabolic health conditions, such as hypertension, diabetes, and high cholesterol. Recent evidence corroborates findings of this review, indicating no significant differences in CVD risk but higher glycosylated hemoglobin (HbA1c) levels among sexual minority women compared to straight women (Caceres et al., 2018a, 2018b; Diamant & Wold, 2003; Mays et al., 2018).
It is hypothesized that sexual-identity-based health disparities are likely due to experiencing additional stressors stemming from sexual-identity-based stigma and discrimination, as posited in the minority stress model (Meyer, 2003). These additional stressors likely contribute to a greater burden of poor mental and physical health among sexual minority populations (Lick et al., 2013). Indeed, evidence has consistently found worse mental health among sexual minority populations than straight populations (Cochran et al., 2003; Hatzenbuehler et al., 2008; Wu et al., 2018), which has implications for their physical health. General population studies have found that poor mental health in the form of psychological distress (which refers to symptoms of distress such as anxiety, depression, and other symptoms) is associated with significantly elevated risk of major CVD diagnoses and mortality (Mommersteeg et al., 2017; Smaardijk et al., 2020; Stewart et al., 2017). Collectively, this evidence suggests that poor mental health among sexual minority populations may have similar negative impacts on cardiometabolic health and mortality. However, little empirical research examining the association between psychological distress and cardiometabolic health among sexual minority populations exists.
A notable limitation of existing research on sexual-identity-based disparities is the exclusion of individuals with sexual identities other than straight or LGB. These individuals may include those who respond “other,” “don’t know,” or refuse to disclose their sexual identity (West & McCabe, 2021). The heterogeneity of these excluded individuals poses challenges with the conceptualization of sexual identity and understanding of sexual-identity-based health disparities. Importantly, research has found that people who self-identify as something other than straight or LGB on surveys may view their sexuality and gender as fluid and/or dynamic and may not be comfortable labeling their identities (Eliason et al., 2016). Previous work that included individuals who were unsure of their sexual identity found unique demographic and health distributions that suggest these may be important subgroups that require further attention (Eliason et al., 2016; Jackson et al., 2016; Price-Feeney et al., 2021). For example, one study found that women who reported “something else” or “don’t know” for their sexual identity also reported more heavy drinking than straight women (Jackson et al., 2016). Another study found that women who identify as “something else” were younger, more likely to report a disability, and had poorer mental health than lesbian and bisexual women (Eliason et al., 2016). Moreover, recent research found important changes to subgroup estimates when including “something else” as a response option (West et al., 2024), further highlighting the importance of including sexual-identity options beyond straight and LGB.
Understanding the mental health and its potential impact on cardiometabolic health among this overlooked group may highlight important unique health needs that should be integrated into existing prevention and intervention efforts. For example, existing research has identified the positive impact on health outcomes, including better mental health, among lesbian and bisexual patients who disclose their sexual orientation to health care providers (Ruben & Fullerton, 2018). However, those who self-identify as something other than lesbian or bisexual may likely need different or additional services to provide adequate care. With increasing efforts to collect sexual orientation data through electronic health records to improve the quality of patient-centered care, a better understanding of the health needs of this subgroup of patients is critical.
Purpose
While research indicates that sexual minority stress is associated with increased psychological distress (Platt & Scheitle, 2018; Swim et al., 2009; Szymanski, 2009), it is unclear whether psychological distress contributes to sexual-identity-based disparities in cardiometabolic health. The present study aimed to (a) describe sexual-identity differences in the prevalence of psychological distress and cardiometabolic health and (b) explore sexual-identity-specific estimates of the association between psychological distress and cardiometabolic health.
Method
Design
Data are from the 2013–2018 National Health Interview Survey, before the design change that occurred in 2019, which resulted in recommendations against merging data sets of these two different designs. The National Health Interview Survey continues to be a nationally representative survey of the civilian noninstitutionalized population in the United States that is conducted continuously throughout the year by the National Center for Health Statistics and utilizes a multistage area probability design. Additional details on the National Health Interview Survey study design are publicly available (Parsons et al., 2014). The household response rates from 2013 to 2017 ranged from 64.2% (2018) to 75.7% (2013), and the conditional response rates for the adult sample component ranged from 79.7% (2015) to 83.9% (2018).
Sample
Female participants 18 years and older who participated in the adult sample were included in these analyses (n = 102,279), which included women who identified as straight (n = 97,909), lesbian/gay (n = 1,424), bisexual (n = 1,235), or something else (n = 360), and those who did not know (n = 712) or refused to disclose their sexual identity (n = 639). Additional demographic information is provided in Table 1.
Table 1.
Sociodemographic Characteristics by Sexual Identity, National Health Interview Survey 2013–2018 (N = 102,279)
| Straight n = 97,909 |
Gay or Lesbian n = 1,424 |
Bisexual n = 1,235 |
Something else n = 360 |
I don’t know n = 712 |
Refused n = 639 |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sociodemographic | M | SE | M | SE | p | M | SE | p | M | SE | p | M | SE | p | M | SE | p |
| Age | 48.2 | 0.1 | 42.2 | 0.6 | .00 | 32.4 | 0.5 | .00 | 37.7 | 1.3 | .00 | 47.0 | 1.0 | .25 | 51.7 | 1.1 | <.001 |
| Sociodemographic | n | Wtd. % | n | Wtd. % | p | n | Wtd. % | p | n | Wtd. % | p | n | Wtd. % | p | n | Wtd. % | p |
|
| |||||||||||||||||
| Race/Ethnicity | .510 | .594 | .174 | <.001 | .734 | ||||||||||||
| Non-Hispanic White | 62,488 | 64.5% | 917 | 63.5% | 831 | 67.2% | 232 | 62.9% | 354 | 45.6% | 404 | 64.6% | |||||
| Non-Hispanic Black | 13,211 | 12.3% | 214 | 14.2% | 150 | 11.3% | 46 | 10.0% | 84 | 14.2% | 94 | 13.3% | |||||
| Hispanic | 14,575 | 15.2% | 193 | 14.7% | 164 | 14.1% | 43 | 14.7% | 178 | 26.6% | 85 | 13.3% | |||||
| Non-Hispanic other | 7,438 | 8.0% | 99 | 7.6% | 88 | 7.4% | 39 | 12.5% | 95 | 13.6% | 56 | 8.8% | |||||
| Family income level relative to FPGa | .026 | <.001 | <.001 | <.001 | .891 | ||||||||||||
| <100% | 13.9% | 14.4% | 26.0% | 21.9% | 20.4% | 14.3% | |||||||||||
| 100%–199% | 19.0% | 17.6% | 22.5% | 22.3% | 28.1% | 20.0% | |||||||||||
| 200%–399% | 29.2% | 25.1% | 26.1% | 32.5% | 27.8% | 29.9% | |||||||||||
| >=400% | 37.9% | 42.9% | 25.4% | 23.4% | 23.7% | 35.8% | |||||||||||
| Education level | <.001 | .041 | .184 | <.001 | .437 | ||||||||||||
| <High school | 13,003 | 12.1% | 116 | 8.3% | 132 | 11.6% | 45 | 12.0% | 207 | 26.3% | 80 | 11.9% | |||||
| High school | 23,881 | 24.2% | 270 | 18.6% | 258 | 23.1% | 76 | 20.4% | 188 | 26.1% | 133 | 20.8% | |||||
| Some college | 31,233 | 31.8% | 460 | 33.0% | 461 | 37.1% | 126 | 39.2% | 173 | 28.5% | 200 | 34.5% | |||||
| >=Bachelor’s degree | 29,435 | 31.8% | 577 | 40.0% | 383 | 28.1% | 113 | 28.4% | 130 | 19.1% | 198 | 32.8% | |||||
| Employment status | <.001 | <.001 | <.001 | .017 | .244 | ||||||||||||
| Full time | 32,264 | 35.3% | 653 | 47.9% | 444 | 35.6% | 104 | 31.0% | 179 | 32.3% | 224 | 37.8% | |||||
| Part time | 19,275 | 21.5% | 299 | 21.9% | 349 | 30.4% | 96 | 26.2% | 118 | 16.2% | 109 | 16.9% | |||||
| Unemployed | 3,655 | 3.9% | 81 | 5.4% | 109 | 9.8% | 23 | 11.4% | 38 | 5.3% | 21 | 3.5% | |||||
| Not in work force | 41,236 | 39.4% | 368 | 24.8% | 303 | 24.1% | 126 | 31.4% | 357 | 46.2% | 256 | 41.8% | |||||
| Region | .245 | .045 | .060 | .363 | <.001 | ||||||||||||
| Northeast | 16,116 | 18.0% | 264 | 18.7% | 201 | 15.2% | 70 | 21.5% | 121 | 18.9% | 163 | 27.0% | |||||
| Midwest | 21,126 | 22.1% | 253 | 19.1% | 268 | 23.8% | 71 | 20.3% | 142 | 18.9% | 125 | 21.0% | |||||
| South | 35,925 | 37.2% | 507 | 37.6% | 407 | 34.4% | 94 | 28.5% | 241 | 36.0% | 200 | 31.0% | |||||
| West | 24,742 | 22.7% | 400 | 24.6% | 359 | 26.6% | 125 | 29.7% | 208 | 26.2% | 151 | 21.0% | |||||
| Relationship status | <.001 | <.001 | <.001 | <.001 | <.001 | ||||||||||||
| Married or living with partner | 46,621 | 58.6% | 617 | 53.3% | 410 | 39.5% | 77 | 26.4% | 192 | 35.5% | 175 | 37.5% | |||||
| Separated, divorced, widowed | 31,721 | 21.9% | 196 | 8.9% | 254 | 13.2% | 99 | 17.9% | 264 | 22.1% | 223 | 29.1% | |||||
| Never married | 19,365 | 19.5% | 605 | 37.7% | 568 | 47.3% | 184 | 55.7% | 253 | 42.4% | 211 | 33.4% | |||||
| Insurance status | <.001 | <.001 | .009 | <.001 | .007 | ||||||||||||
| Private | 45,141 | 52.7% | 786 | 57.7% | 607 | 54.0% | 148 | 44.7% | 229 | 40.1% | 293 | 50.9% | |||||
| Public | 42,749 | 37.5% | 468 | 30.1% | 451 | 31.3% | 168 | 38.1% | 389 | 46.6% | 290 | 43.3% | |||||
| Uninsured | 9,607 | 9.8% | 163 | 12.1% | 170 | 14.7% | 41 | 17.2% | 88 | 13.3% | 46 | 5.8% | |||||
Note. p values are generated from t test (age) and Pearson chi-square test (race/ethnicity, education level, employment status, region, relationship status, and insurance status) or f test (family income relative to FPG) with straight as referent group. SE = standard error; Wtd. = weighted.
Federal poverty guidelines.
Measures
Sexual Identity.
Sexual identity was measured consistently across the 5 years using the cognitively tested question (Miller & Ryan, 2011) “How do you think of yourself?” Response options were “Lesbian or gay,” “Straight, that is, not lesbian or gay,” “Bisexual,” “Something else,” “I don’t know the answer” and “Refused.”
Psychological Distress.
The Kessler six-item Psychological Distress Scale was utilized to indicate nonspecific psychological distress (Kessler et al., 2010). Participants were asked how often they felt (a) so sad that nothing could cheer them up, (b) nervous, (c) restless or fidgety, (d) hopeless, (e) that everything was an effort, and (f) worthless. Responses were ranked on a 0- to 4-point scale ranging from none of the time (0 points) to all of the time (4 points) and added for a total score of up 24 points. Following widely accepted guidelines, scores below 5 points were considered to be “no/limited psychological distress,” 5–12 points were considered “moderate psychological distress,” and 13 or more points were considered “severe psychological distress” (Kessler et al., 2010).
Cardiometabolic Health.
Participants were asked whether they had ever been told that they had hypertension, high cholesterol, diabetes, coronary heart disease, a heart attack, stroke, or angina pectoris. Due to small sample sizes for some sexual-identity subgroups, participants who answered “yes” to any of these conditions were considered to have any cardiometabolic health condition.
Covariates.
Covariates in these analyses include sociodemographic factors that have been previously linked with CVD and psychological distress, including age, race/ethnicity (Hispanic, non-Hispanic White, non-Hispanic Black, and non-Hispanic other), relationship status (married or living with a partner; separated, divorced, or widowed; never married), region of residence (Northeast, Midwest, South, West), educational attainment (less than high school, high school graduate/general education development, some college/associate’s, and bachelor’s or greater), employment status (full time, part time, unemployed, and not in labor force), and insurance status (private, public, and uninsured). Family income relative to the federal poverty guidelines was categorized into four groups: <100%, 100%–199%, 200%–399%, and ≥400%.
Analysis
Prevalence of cardiometabolic health conditions and psychological distress were estimated for each sexual-identity group. Pearson chi-square tests and t tests were used to test for independence between sexual identity and covariates, as well as health outcomes. Logistic regression models were fit to assess the relationship between psychological distress and any cardiometabolic health condition. Additionally, multivariable logistic regression models were fit adjusting for age, race/ethnicity, relationship status, region, family income level, education, employment, and insurance status. Straight women were the reference group for all analyses. We tested for effect modification by sexual identity on the relationship between psychological distress and any cardiometabolic health condition as well as examined sexual-identity-specific estimates of the association using multivariable logistic regression models.
All data management and analyses were performed using Stata/SE Version 17.0. Consistent with recommendations from the National Center for Health Statistics (Division of Health Interview Statistics & N. C. for H. S, 2018), all analyses were weighted using the provided sampling weights. In addition, multiple imputations (mi commands) in Stata were used to account for missing responses to family income.
Results
Table 1 describes sociodemographic characteristics by sexual identity. Approximately 4.3% of participants reported a sexual identity other than straight. On average, women who identified as lesbian/gay, bisexual, or something else were significantly younger than straight women, while women who “refused” were significantly older than straight women. Women who did not identify as straight (i.e., LGB, something else, “I don’t know,” and “refused”) were more likely to have never married than straight women. Additionally, compared to straight women, women who identified as bisexual, “something else,” or “I don’t know” were more likely to have a family income <200% of the Federal Poverty Guidelines. Compared to straight women, a greater proportion of lesbian/gay women had a family income at least 400% greater than the Federal Poverty Guidelines, had a college degree, were employed full time, and had private health insurance. In contrast, more bisexual women were employed part time or unemployed and were uninsured; more women who identified as “something else” were unemployed and uninsured; more women who reported “I don’t know” were Hispanic, had less than a high school education, were not in the workforce, and had public health insurance; and more women who “refused” were residing in the Northeast and had public health insurance.
Distributions of cardiometabolic health conditions and psychological distress by sexual identity are presented in Table 2. Compared to straight women, lesbian/gay women had lower prevalence of hypertension, diabetes, and any cardiometabolic health condition, while bisexual women had lower prevalence of hypertension, high cholesterol, diabetes, coronary heart disease, stroke, angina, and any cardiometabolic health condition. Women who identified as something else had lower prevalence of hypertension, high cholesterol, and any cardiometabolic health condition than straight women. There were no statistically significant differences in any of the cardiometabolic health conditions between straight women and women who “did not know” or “refused.” Additionally, compared to straight women, a greater proportion of women who identified as lesbian/gay, bisexual, “something else,” or “did not know” reported moderate psychological distress; and a greater proportion of women who identified as lesbian/gay, bisexual, “something else,” or “did not know” reported severe psychological distress. However, a smaller proportion of women who refused to report their sexual identity reported moderate psychological distress as compared to straight women.
Table 2.
Prevalence of Cardiometabolic Health Conditions and Psychological Distress by Sexual Identity, National Health Interview Survey 2013–2018
| Straight |
Gay/Lesbian |
Bisexual |
Something else |
I don’t know |
Refused |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Health measure | N | Wtd. % | N | Wtd. % | p a | N | Wtd. % | p a | N | Wtd. % | p a | N | Wtd. % | p a | N | Wtd. % | p a |
| Cardiometabolic health condition | |||||||||||||||||
| Hypertension | 33,733 | 30.2% | 370 | 22.6% | *** | 255 | 18.8% | *** | 103 | 20.2% | *** | 256 | 29.2% | 225 | 32.1% | ||
| High cholesterol | 23,786 | 26.9% | 318 | 25.5% | 191 | 16.1% | *** | 85 | 18.0% | ** | 183 | 25.4% | 145 | 26.8% | |||
| Diabetes | 3,991 | 3.3% | 42 | 2.0% | ** | 23 | 1.4% | *** | 15 | 2.6% | 35 | 3.5% | 33 | 3.7% | |||
| Coronary heart disease | 10,179 | 9.1% | 132 | 8.5% | 76 | 6.7% | * | 33 | 7.2% | 94 | 11.6% | 72 | 10.3% | ||||
| Stroke | 3,438 | 2.9% | 50 | 2.9% | 25 | 1.4% | ** | 13 | 1.6% | 25 | 3.0% | 17 | 2.4% | ||||
| Myocardial infarction | 2,670 | 2.2% | 30 | 1.9% | 23 | 1.3% | 13 | 2.6% | 16 | 2.2% | 27 | 2.7% | |||||
| Angina | 1,864 | 1.6% | 24 | 1.2% | 13 | 0.7% | * | 9 | 1.5% | 12 | 1.8% | 15 | 2.1% | ||||
| Any cardiometabolic health condition | 45,739 | 47.7% | 561 | 41.3% | *** | 381 | 31.9% | *** | 153 | 33.2% | *** | 358 | 45.4% | 292 | 46.8% | ||
| Psychological distress | |||||||||||||||||
| None (0–4) | 74,377 | 77.2% | 971 | 70.4% | 580 | 48.5% | 174 | 43.1% | 456 | 68.3% | 412 | 82.6% | |||||
| Moderate (5–12) | 18,476 | 18.8% | 348 | 24.1% | *** | 463 | 39.0% | *** | 132 | 39.6% | *** | 164 | 21.9% | * | 65 | 12.1% | ** |
| Severe (13–24) | 4,155 | 4.0% | 91 | 5.5% | ** | 190 | 12.5% | *** | 51 | 17.3% | *** | 60 | 9.9% | *** | 21 | 5.3% | |
Note. Wtd. = weighted.
p values for comparing to straight participants.
p < .05.
p < .01.
p < .001.
Association Between Psychological Distress and Cardiometabolic Health
Odds ratios examining the association between psychological distress and cardiometabolic health are presented in Table 3. After adjusting for covariates, higher psychological distress was associated with significantly higher odds of having a cardiometabolic health condition, moderate psychological distress: OR = 1.66, 95% confidence interval (CI) [1.58, 1.75]; severe psychological distress: OR = 2.66, 95% CI [2.39, 2.96], among women overall. Similar associations were identified among straight women in sexual-identity-specific estimates as well as lesbian/gay women. There were also significant positive associations between moderate psychological distress and cardiometabolic health in adjusted models among women who reported “I don’t know” for their sexual identity (OR = 2.80, 95% CI [1.50, 5.23]). Tests for interaction found no statistically significant effect modification on the association between psychological distress and cardiometabolic health ( p = .27).
Table 3.
Association Between Psychological Distress and Cardiometabolic Health by Sexual Identity, National Health Interview Survey 2013– 2018
| Psychological distress OR (95% CI) |
||||
|---|---|---|---|---|
| Sexual identity | Model | None | Moderate | Severe |
| Overall | unadj | 1.00 | 1.30 (1.25–1.37)*** | 2.24 (2.02–2.47)*** |
| adja | 1.00 | 1.66 (1.58–1.75)*** | 2.66 (2.39–2.96)*** | |
| Straight | unadj | 1.00 | 1.34 (1.27–1.40)*** | 2.40 (2.17–2.66)*** |
| adja | 1.00 | 1.66 (1.57–1.75)*** | 2.72 (2.44–3.04)*** | |
| Gay/Lesbian | unadj | 1.00 | 1.56 (1.13–2.16)** | 2.80 (1.63–4.78)*** |
| adja | 1.00 | 2.19 (1.50–3.19)*** | 4.00 (2.26–7.07)*** | |
| Bisexual | unadj | 1.00 | 0.91 (0.66–1.26) | 1.43 (0.90–2.27) |
| adja | 1.00 | 1.20 (0.83–1.74) | 1.79 (1.11–2.86)* | |
| Something else | unadj | 1.00 | 0.54 (0.32–0.92)* | 0.68 (0.30–1.56) |
| adja | 1.00 | 1.21 (0.59–2.50) | 1.86 (0.79–4.36) | |
| I don’t know | unadj | 1.00 | 1.76 (1.12–2.77)* | 1.78 (0.98–3.23) |
| adja | 1.00 | 2.80 (1.50–5.23)** | 1.85 (0.81–4.20) | |
| Refused | unadj | 1.00 | 1.45 (0.84–2.49) | 1.40 (0.45–4.36) |
| adja | 1.00 | 1.22 (0.65–2.31) | 1.39 (0.49–3.93) | |
Note. Cardiometabolic health includes hypertension, high cholesterol, diabetes, coronary heart disease, a heart attack, stroke, or angina pectoris. CI = confidence interval; unadj = unadjusted; adj = adjusted.
Adjusted for age, race/ethnicity, relationship status, region, education level, employment, insurance, and income.
p < .05.
p < .01.
p < .001.
Discussion
This research contributes to existing literature in two ways. First, we estimated prevalence of psychological distress and cardiometabolic health among a frequently overlooked group of people who do not report a straight sexual identity (i.e., “something else,” “I don’t know,” and “refused”). Second, we examined sexual-orientation-specific associations between mental health and cardiometabolic health. Overall, we found that the majority of women who reported a sexual identity other than straight also reported higher prevalence of both moderate and severe psychological distress compared to straight women. However, there were some notable exceptions including no difference in moderate psychological distress between women who responded “I don’t know” and straight women, while fewer women who “refused” reported moderate psychological distress compared to straight women.
We found that the association between psychological distress and cardiometabolic health did not statistically significantly differ by sexual identity. Consistent with previous work (Mommersteeg et al., 2017; Smaardijk et al., 2020; Stewart et al., 2017), the overall association suggests that psychosocial distress is associated with poorer cardiometabolic health; however, when we further assessed this association by estimating sexual-identity-specific effects, we identified potentially substantive differences, which could have been masked due to smaller sample sizes of the sexual-identity subgroups (as reflected in the wide confidence intervals in these analyses). These substantive subgroup findings suggest that, for some women who report a sexual identity other than straight, the association between psychological distress and cardiometabolic health may be larger in magnitude than for their straight counterparts. For example, the associations between moderate psychological distress and cardiometabolic health were greater in magnitude among women who identified as lesbian/gay (OR = 2.19, 95% CI [1.50, 3.19]) and among women who did not know their sexual identity (OR = 2.80, 95% CI [1.50, 5.23]) as compared to straight women ([OR = 1.66, 95% CI [1.57, 1.75]). Additionally, the associations between severe psychological distress and cardiometabolic health were greater in magnitude among women who identified as lesbian/gay (OR = 4.00, 95% CI [2.26, 7.07]) than among straight women (OR = 2.73, 95% CI [2.44, 3.04]). Similar findings (i.e., no statistically significant effect modification but potentially important substantive subgroup differences) were identified when examining the association between the climate of support and obesity by sexual-identity groups (VanKim et al., 2020). Although both studies were cross-sectional, future work should continue to explore sexual-identity-specific estimates as a strategy to identify important subgroup differences that may impact intervention efforts.
As a corollary, the positive association between psychological distress and cardiometabolic health suggests that the high prevalence of poor mental health among sexual minority populations (Bränström et al., 2023; Gonzales & Henning-Smith, 2017; Hsieh, 2019; Mongelli et al., 2019; Williams et al., 2022; Wittgens et al., 2022) may negatively affect their risk for developing a cardiometabolic health condition. We can speculate that some of these potential substantive differences that we identified in sexual-identity-specific estimates may reflect how the added stigma and discrimination experienced by sexual minority women contributes to the higher prevalence of psychological distress, which in turn, may increase their risk for poor cardiometabolic health, as posited in the minority stress model (Meyer, 2003). Indeed, research has identified stigma and discrimination as a chronic stressor that may yield physiologic differences that further disadvantage minoritized groups in terms of health risks, such as for cardiometabolic risk conditions and diagnoses (Caceres et al., 2020; Frost et al., 2015; Wardecker et al., 2021). However, consistent with existing limitations of this area of research, the cross-sectional study design and reliance on self-reported diagnostic data inhibit our ability to examine this association more robustly. Collectively, these findings indicate the need for longitudinal work examining changes in mental health, experiences of stigma and discrimination, and subsequent risk of poor cardiometabolic health using metabolic biomarkers to understand how these exposures affect disease risk.
A unique contribution of this study are the findings regarding individuals who reported “something else,” “I don’t know,” or “refused” to disclose their sexual identity. While these groups are seldom analyzed in sexual-identity research, prior studies have found that when individuals are able to select their sexual identity from a larger range of response options, the heterogeneity within each sexual-identity subgroup decreases (West & McCabe, 2021). Therefore, although fewer people endorsed these response options, including these subgroups likely allowed us to generate better estimates of associations between sexual-identity and health outcomes. In particular, we were able to establish that the prevalence of severe psychological distress was higher among those who identified as “something else” or “I don’t know,” suggesting that psychological distress, which can be part of the process of sexual self-identification and development, might contribute to poor mental health, particularly in a society where those who are minoritized experience more stigma and discrimination. In combination with findings from existing research on the impact on patient experiences related to their sexual identity (Rahman et al., 2023; Ruben & Fullerton, 2018), our findings suggest that efforts to be inclusive of patient experiences should also consider sexual identities other than straight and LGB. Moreover, growing evidence shows the importance of accounting for sexual fluidity (change in sexual orientation dimensions over time) in research and clinical practice. Clinically, inclusive assessment of sexual orientation should occur at multiple time points, not only to ensure that holistic care is provided in line with individual changes during one’s life course (Katz-Wise & Todd, 2022) but also to help provide important contextual information regarding patient experiences. For example, recent state-level policies such as “Don’t Say Gay,” which bans discussion of sexual orientation and gender identity in classrooms, have substantial negative impacts on individual mental health and on healthy equity more broadly (Kline et al., 2022). Additionally, existing evidence suggests a lack of standardized education and expected competency for providers in both mental and primary health care (Bunting et al., 2022; Nowaskie, 2020; Williams et al., 2024). Development and implementation of training programs have been shown to be associated with increased clinical preparedness and basic knowledge of sexually minoritized health (Moe et al., 2021; Patel & Nowaskie, 2024; Traister, 2020). Collectively, this evidence highlights the importance of implementing inclusive assessments of sexual orientation (including sexual identities other than straight and LGB) at multiple time points and training programs to providers so that patients receive more holistic mental and physical health care. Future research should examine how changes and developments associated with one’s sexual identity may affect mental health and, subsequently, cardiometabolic health and identify relevant health needs during these sexual-identity changes and developments.
The use of self-report data for cardiometabolic health measures was a major limitation of the present study. Differential access to health care based on sexual identity (sexual minority populations have been shown to be less likely to access health care compared to their straight counterparts; Fish et al., 2021; Tabaac et al., 2020) likely introduces bias toward the null. Although we adjusted for health insurance coverage, women who reported a sexual identity other than straight were more likely to be uninsured than straight women, thus, potentially underestimating the prevalence of cardiometabolic health conditions and subsequent association between psychological distress and cardiometabolic health. An additional limitation is the cross-sectional study design, which inhibits determination of temporality and causation. Importantly, these data were collected prior to COVID-19-related events. Given evidence of the differential impact of COVID-19 on minoritized populations, including sexual minorities (Fish et al., 2021), it is likely that psychological distress would be underestimated during COVID-19 and after COVID-19-related restrictions were lifted. In relation to this, measures of stigma and discrimination (including individual-level experience as well as state- or federal-level policies) along with biospecimen were not collected, which limits directly testing mechanisms proposed in the minority stress model. Consistent with the minority stress model, the link between psychological distress and poor cardiometabolic health spans over an extended period in one’s life course, and the accumulation of these negative experiences, including large-scale disruptions such as the COVID-19 pandemic, likely is more indicative of disease risk than a snapshot in time. Collectively, these findings and limitations indicate the need for larger longitudinal studies that includes biological measures to ascertain cardiometabolic health outcomes (Caceres et al., 2018a; Farmer et al., 2013; Juster et al., 2019; Peterson et al., 2016; Wardecker et al., 2021) as well as assessment of discrimination, stigma, and psychological distress to more accurately determine their risk for poor cardiometabolic health.
Conclusions
Overall, the results of this study support previous research suggesting that psychological distress is associated with poorer cardiometabolic health and that women who identify other than straight require a unique understanding of their disparate risks and outcomes. It also indicates that further research is needed to better disentangle the factors that may contribute to the relationship of psychological distress and cardiometabolic health, such as the impact of stigma and discrimination. Studying mechanisms that create health disparities in cardiometabolic health allows for potential interventions to better mitigate these disparities and, more effectively and comprehensively, improve the health of women who identify other than straight. Relatedly, providing inclusive patient-centered care needs to include acknowledgement of sexual identities other than straight and LGB. While the needs of patients who identify as something other than these identities is not yet well understood, research that includes these populations will begin to highlight how health care workers may provide appropriate support. Moreover, although the association between psychological distress and cardiometabolic health were similar across sexual-identity groups, given the high prevalence of psychological distress among women who identify other than straight, longitudinal research is needed to better understand the long-term health impacts this may cause.
Public Policy Relevance Statement.
Psychological distress negatively affects cardiometabolic health among all women. However, for some women, psychological distress may have a greater affect on cardiometabolic health than others. This study found that women who do not identify as straight generally report more psychological distress; furthermore, lesbian or gay women who experience psychological distress may also experience poorer cardiometabolic health. Moreover, findings highlight the importance of including more expansive sexual-identity categories in research in order to better understand the health needs of those who do not identify as straight, lesbian, gay, or bisexual and provide appropriate care.
Acknowledgments
Nicole A. VanKim is supported by Grant K01DK123193 from the Division of Diabetes, Endocrinology, and Metabolic Diseases, National Institute of Diabetes, Digestive, and Kidney Diseases, National Institutes of Health.
Footnotes
The authors have no conflicts of interest to disclose.
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