Race-specific associations between psychological distress and obesity: the role of social cohesion.

OBJECTIVE: Nearly two-thirds of Black women in the US are obese. Studies have focused more on lifestyle and behavioral factors to explain racial disparities; less research has examined psychosocial factors such as psychological distress and social cohesion. While research suggests that social cohesion may confer benefits for health, no studies have assessed how social cohesion is related to both mental health and obesity, and potential racial differences. Our study examined associations between psychological distress, social cohesion, and obesity among Black and White adult women. DESIGN: Data are from the 2014-2018 National Health Interview Survey (n = 66,743). Participants self-reported psychological distress (Kessler K6 scale), obesity (body mass index≥30 kg/m2), and social cohesion. We fit logistic regression models of obesity with likelihood ratio tests for effect modification by social cohesion and by race. RESULTS: Psychological distress was associated with a 1.19 and 1.31 higher odds of obesity for Black (95% confidence interval: 1.05, 1.36) and White women (1.24, 1.39), respectively. Social cohesion was associated with a 0.75 lower odds of obesity among White (0.69, 0.81) but not Black women (odds ratio 0.94; 0.80, 1.10). Tests of interaction indicated no differences by social cohesion or race in the association between psychological distress and obesity. CONCLUSION: Findings highlight complex relationships between psychological distress, obesity, and social cohesion in Black and White women. Public health efforts should focus on understanding mechanisms relating social factors to health.

Variation in diet quality across sexual orientation in a cohort of U.S. women.

PURPOSE: Extensive prior research has shown that sexual minority women are more likely to have a number of cancer risk factors, thereby putting them at higher risk for cancer than heterosexual women. However, there has been little research evaluating the association between sexual orientation and diet quality. METHOD: Data come from participants (aged 24-54 years) enrolled in Nurses' Health Study 3, an ongoing, U.S.-based cohort study (N = 15,941). We measured diet using recommendations from the Dietary Approach to Stop Hypertension (DASH) and American Health Association (AHA) 2020 Strategic Impact Goals. RESULTS: We found limited evidence of differences across diet quality by sexual orientation. When examining predicted DASH scores, mostly heterosexual [predicted mean score (95% confidence interval), 24.0 (23.8, 24.3)] and lesbian [24.3 (23.8, 24.9)] women had healthier predicted DASH scores than the reference group of completely heterosexual women with no same-sex partners [23.6 (23.5, 23.7)]. Even though certain sexual minority women had overall healthier predict DASH scores, their consumption of certain food groups-low-fat dairy and fruit-was lower than completely heterosexual women with no same-sex partners. When measuring AHA scores, most sexual minority groups (completely heterosexual women with same-sex partners, mostly heterosexual women, and lesbian women) had higher diet quality compared to the reference group of completely heterosexual women with no same-sex partners. CONCLUSION: Sexual minority women, particularly mostly heterosexual women and lesbian women, had healthier diet quality than completely heterosexual women with no same-sex partners. These data suggest that cancer risk factors (e.g., smoking, drinking, and inactivity) other than diet would drive higher cancer rates among sexual minority compared to heterosexual women. Nonetheless, it is critical for all women to improve their diet quality since diet quality was poor among participants of all sexual orientations.

Depression, Anxiety, and Alcohol Use Among LGBTQ+ People During the COVID-19 Pandemic.

Objectives. To describe disparities in depression, anxiety, and problem drinking by sexual orientation, sexual behavior, and gender identity during the COVID-19 pandemic. Methods. Data were collected May 21 to July 15, 2020, from 3245 adults living in 5 major US metropolitan areas (Atlanta, Georgia; Chicago, Illinois; New Orleans, Louisiana; New York, New York; and Los Angeles, California). Participants were characterized as cisgender straight or LGBTQ+ (i.e., lesbian, gay, bisexual, and transgender people, and men who have sex with men, and women who have sex with women not identifying as lesbian, gay, bisexual, or transgender). Results. Cisgender straight participants had the lowest levels of depression, anxiety, and problem drinking compared with all other sexual orientation, sexual behavior, and gender identity groups, and, in general, LGBTQ+ participants were more likely to report that these health problems were "more than usual" during the COVID-19 pandemic. Conclusions. LGBTQ+ communities experienced worse mental health and problem drinking than their cisgender straight counterparts during the COVID-19 pandemic. Future research should assess the impact of the pandemic on health inequities. Policymakers should consider resources to support LGBTQ+ mental health and substance use prevention in COVID-19 recovery efforts.

Sexual orientation and benign breast disease in a cohort of U.S. women.

PURPOSE: Several studies indicate that sexual minority (e.g., bisexual, lesbian) women may be at an increased risk for breast cancer. However, we know little about how risk factors, such as benign breast disease (BBD)-which can confer nearly a fourfold breast cancer risk increase-may vary across sexual orientation groups. METHODS: Among Nurses' Health Study II participants followed from 1989 to 2013 (n = 99,656), we investigated whether bisexual and lesbian women were more likely than heterosexual women to have breast cancer risk factors including a BBD diagnosis (self-reported biopsy or aspiration confirmed, n = 11,021). Cox proportional hazard models were used to calculate hazard ratios (HR) and 95% confidence intervals (CI). RESULTS: Compared to heterosexuals, sexual minority participants more commonly reported certain breast cancer risk factors including increased alcohol intake and nulliparity. However, sexual minority participants were more likely than heterosexuals to have certain protective factors including higher body mass index and less oral contraceptive use. When evaluating age- and family history-adjusted rates of BBD diagnoses across sexual orientation groups, bisexual (HR 1.04, 95% CI [0.78, 1.38]) and lesbian (0.99 [0.81, 1.21]) women were just as likely as heterosexuals to have a BBD diagnosis. Results were similar after adjusting for other known breast cancer risk factors. CONCLUSIONS: In this cohort of women across the U.S., sexual minorities were more likely than heterosexuals to have some breast cancer risk factors-including modifiable risk factors such as alcohol intake. Heterosexual, bisexual, and lesbian women were equally as likely to have a BBD diagnosis.

College Climate and Sexual Orientation Differences in Weight Status.

Previous research has identified significant sexual orientation disparities in obesity. Contextual factors, like lack of anti-discrimination policies and gay-straight alliances, have been shown to be associated with health outcomes like poor mental health and substance use for lesbian, gay, and bisexual (LGB) individuals moreso than their heterosexual counterparts; however, little work to date has explored the role of contextual factors on sexual orientation disparities in obesity. Individual-level, serial cross-sectional data from the 2009-2013 College Student Health Survey, which includes 2- and 4-year college students (n = 29,118) attending 46 Minnesota colleges, were used. College-level data on LGB context were primarily collected through college websites. Multinomial logistic regression models were fit to examine associations between LGB college climate scores (including non-discrimination policies, presence of LGB or diversity-related student groups, LGB courses offered, LGB housing accommodations, and prevalence of LGB students) and students' weight status (underweight, healthy weight, overweight, and obese), based on self-reported height and weight. Higher LGB climate scores (i.e., more supportive environments) were associated with lower risk of overweight and obesity among all students. Sexual orientation-stratified findings among female students suggested that the association between LGB climate scores and weight status was similar to the overall female sample. Sexual orientation-stratified findings among male students showed a more complex relationship between LGB climate scores and weight status. More work is needed to disentangle the observed associations, and to investigate other contextual factors, like state- and city-level policies, social networks and norms, and individual resiliency within these contexts to better understand the contextual influences on sexual orientation disparities in obesity.

Unhealthy weight control behaviors among youth: Sex of sexual partner is linked to important differences.

Unhealthy weight control behaviors (UWCBs) have been decreasing for most youth over time, yet little is known whether these behaviors have changed for sexual minority (e.g., non-heterosexual) youth. This is important because many studies have found that sexual minorities report some of the highest rates of UWCBs. To determine whether or not these behaviors have changed over time, given the extreme changes in social contexts over the past two decades, we utilised three waves of the Minnesota Student Survey (N = 55,597, Mage = 17). In doing so, we report trends, disparities, and changes in disparities of UWCBs. Overall, the prevalence of UWCBs has declined from 1999 to 2010 for all youth, but there are alarming disparities by sex of sexual partner. We found that both- and same-sex partnered male youth were more likely to fast, use diet pills, and vomit on purpose to lose weight compared to their opposite-sex partnered counterparts in all three survey years; specifically, both-sex partnered boys were up to 5.5× as likely to vomit on purpose compared to their opposite-sex partnered counterparts. Likewise, both-sex partnered girls were more likely to use diet pills and vomit on purpose to lose weight compared to opposite-sex partnered girls in all three survey years. Additionally, the disparity in fasting to lose weight widened for the same-sex partnered females compared to the opposite-sex partnered females from 1998 to 2004. This has implications for UWCB interventions and preventions targeted specifically towards sexual minorities.

Lesbian, gay and bisexual college student perspectives on disparities in weight-related behaviours and body image: a qualitative analysis.

AIMS AND OBJECTIVES: To (1) explore college students' perceived sexual orientation-related barriers to engaging in physical activity, eating healthfully and maintaining healthy body images and (2) identify types of campus resources on physical activity, healthy eating and body image available to lesbian, gay and bisexual college students. BACKGROUND: Previous research has highlighted sexual orientation disparities in weight status, physical activity, healthy eating and body image. Despite this, little is known about the context surrounding these disparities. DESIGN: Cross-sectional study using individual interviews. METHODS: Thirty (15 males, 15 females) lesbian, gay, bisexual, queer and pansexual-identified college students, aged 18-30 years participated in the study. Quasi-inductive coding was used to analyse transcribed interview data and an iterative coding process was used to organise data into themes. RESULTS: Many felt their sexual orientation helped them be physically active, engage in healthful eating habits and have a positive body image. However, sexual orientation was also identified as a stressor that adversely impacted physical activity and eating habits. CONCLUSIONS: Lesbian, gay and bisexual students may have to negotiate their sexuality in ways that could adversely influence their physical activity, eating habits and body image. Both clinical and institutional interventions should be inclusive of all people, including lesbian, gay and bisexual, queer, and pansexual students. Further, tailored interventions to meet the specific health needs of sexual minority populations are needed. RELEVANCE TO CLINICAL PRACTICE: Clinicians need to understand the context in which sexual minority young adults experience health promotion messaging and programming. Clinic-based tailored interventions are critical as part of a multi-faceted approach in promoting physical activity and healthier eating habits for all young people, including lesbian, gay, bisexual, queer and pansexual, to more effectively address the prevention of chronic diseases.

Disparities in Weight and Weight Behaviors by Sexual Orientation in College Students.

Objectives. We assessed disparities in weight and weight-related behaviors among college students by sexual orientation and gender. Methods. We performed cross-sectional analyses of pooled annual data (2007-2011; n = 33 907) from students participating in a Minnesota state-based survey of 40 two- and four-year colleges and universities. Sexual orientation included heterosexual, gay or lesbian, bisexual, unsure, and discordant heterosexual (heterosexuals engaging in same-sex sexual experiences). Dependent variables included weight status (derived from self-reported weight and height), diet (fruits, vegetables, soda, fast food, restaurant meals, breakfast), physical activity, screen time, unhealthy weight control, and body satisfaction. Results. Bisexual and lesbian women were more likely to be obese than heterosexual and discordant heterosexual women. Bisexual women were at high risk for unhealthy weight, diet, physical activity, and weight control behaviors. Gay and bisexual men exhibited poor activity patterns, though gay men consumed significantly less regular soda (and significantly more diet soda) than heterosexual men. Conclusions. We observed disparities in weight-, diet-, and physical activity-related factors across sexual orientation among college youths. Additional research is needed to better understand these disparities and the most appropriate intervention strategies to address them.

Health and health risks among sexual minority women: an examination of 3 subgroups.

We used 2001-2010 National Health and Nutrition Examination Survey data to examine insurance status, source of routine care, cigarette and alcohol use, and self-rated health among lesbian, bisexual, and heterosexual women who have sex with women, compared with heterosexual women who do not have sex with women. We found higher risks of being uninsured among lesbian and bisexual women, worse self-rated health among bisexual women, higher alcohol use among bisexual and heterosexual women who have sex with women, and higher smoking across all subgroups.

Sexual Identity Differences in Chronic Pain: Results from the 2019 to 2021 National Health Interview Survey.

INTRODUCTION: Chronic pain has been highlighted as an important public health and clinical health issue. The prevalence of chronic pain has been increasing, with notable disparities for many minoritized populations. However, evidence regarding sexual minoritized populations and chronic pain is lacking. Therefore, the purpose of this study is to compare the prevalence of chronic pain among men and women by sexual identity. METHODS: Data from the 2019 to 2021 National Health Interview Survey (n=78,686), a population-based public health surveillance system were analyzed in 2023-2024. This included 592 lesbian/gay and 952 bisexual women as well as 868 gay and 317 bisexual men. Chronic pain measures included frequency, amount of pain, pain limiting activities, and pain affecting family and others. Covariates included age, race/ethnicity, relationship status, education attainment, income, and employment status. RESULTS: After adjusting for covariates, significantly (p<0.05) more gay/lesbian (26.7%) and bisexual (31.6%) women reported experiencing chronic pain "most days or everyday" than straight women (21.7%). More bisexual women reported chronic pain as well as negative impacts in their life due to chronic pain than straight women. More bisexual men also reported experiencing chronic pain "most days or everyday" compared to straight men (26.1% versus 19.6%), although no differences were found for other aspects of pain. CONCLUSIONS: Sexual minoritized populations have a greater burden of chronic pain that should be considered in moving forward in pain work. Future work in this area is needed to understand why these disparities exist and how best to provide care and treatment to those affected.

Children's Perception of Food Marketing Across Digital Media Platforms.

Introduction: Exposure to food marketing increases the risk of poor diet. Children's perception and interpretation of food marketing across digital media platforms is understudied. Children aged 9-11 years are uniquely susceptible to food marketing because children may watch content alone, and it is unclear whether embedded ads are decipherable by children (e.g., social media influencers) and if children are receptive to advertisements. Methods: The authors collected data from 21 child-parent dyads in 2022 to fill this gap. Children were interviewed about their food marketing exposure and media use and were asked to share their perspectives on food advertisements. Parents completed a survey for household digital devices, demographics, and perception of their child's food advertising knowledge. Results: This study found that all children generally recognized direct food advertisements, could describe them with varying levels of confidence, and shared examples. Despite self-identifying ads and understanding the intent of advertising, many children are still receptive to advertisements on the basis of engaging content (e.g., liking the ads as entertainment, watching ads even when given the chance to skip the ad) and the food items marketed (e.g., liking the taste of foods). Conclusions: These findings suggest that knowledge of advertisement exposure and intent of advertising are not sufficient to reduce receptiveness of unhealthy food ad exposure. Additional research on the potential impacts of embedded ads, such as through social media influencers, is needed to understand children's interaction with the current digital media landscape.

Racism-Related Experiences and Adiposity: Findings From the Black Women's Experiences Living With Lupus (BeWELL) Study.

INTRODUCTION: Studies suggest that higher rates of excess adiposity in Black women may in part be driven by experiences of racism. Racial microaggressions, which include unintentional and subtle slights and insults, and responses to racism such as racism-related vigilance, may contribute to adiposity in this population. This study examined these understudied racism-related facets as well as interpersonal racial discrimination in relation to adiposity in a cohort of Black women with systemic lupus erythematosus. METHODS: Data are from the Black Women's Experiences Living with Lupus (BeWELL) Study (2015-2017; n = 432). Linear regression was used to examine adiposity measures (body mass index [BMI], percent body fat, and waist-to-hip ratio), measured during a physical examination, in relation to self-reported measures of racial microaggressions, racism-related vigilance, and interpersonal racial discrimination. RESULTS: Compared with infrequent microaggressions, very frequent experiences of microaggressions were associated with 2.9 kg/m2 higher BMI (95% confidence [CI], 0.63-5.21) and 2.6% higher body fat (95% CI, 0.32-4.80) after adjusting for covariates. Racism-related vigilance, measured continuously, was positively associated with BMI (b = 0.84; 95% CI-0.08, 1.61) and percent body fat (b = 0.89; 95% CI, 0.14-1.64). Very frequent experiences of everyday discrimination were associated with a higher BMI (b = 2.70; 95% CI, 0.58-4.83) and waist-to-hip ratio (b = 0.32; 95% CI, 0.09-0.55) compared with less frequent everyday discrimination. CONCLUSIONS: Our results suggest that various dimensions of racism are associated with excess adiposity. Efforts to address obesity among Black women with systemic lupus erythematosus should consider these multiple aspects to decrease racial inequities in adiposity.

Sexual Orientation and Obesity: What Do We Know?

PURPOSE OF REVIEW: This review describes research addressing sexual orientation disparities in obesity and their sequelae, with a focus on new findings from the past year and areas for future work. RECENT FINDINGS: Sexual minority people of color experience important health disparities related to obesity. Sexual minority women may be at greater risk of developing type 2 diabetes than their heterosexual counterparts, potentially because of obesity-related disparities. Bisexual men also appear to experience more obesity and potential greater risk for type 2 diabetes than heterosexual men. Stigma and discrimination are important emerging areas for additional research to better understand sexual orientation disparities in obesity-related health. There is a need for intersectional research and longitudinal research that connects existing sexual orientation disparities in obesity with subsequent chronic disease development. Additionally, upstream efforts to understand the impact of stigma and discrimination on the weight-related health of sexual minority groups are needed.

Examining the associations of sexual minority stressors and past-year depression with overeating and binge eating in a diverse community sample of sexual minority women.

Sexual minority stressors (e.g., stigma consciousness, internalized homophobia, discrimination) are posited to contribute to higher prevalence of overeating and binge eating among sexual minority women (SMW) relative to heterosexual women. Few studies have examined psychosocial mediators of the associations of minority stressors with overeating and binge eating in SMW. Using data from a diverse, community-based sample of SMW, we examined these associations, including the potential mediating effects of past-year depression. We also conducted exploratory analyses to determine if the associations of sexual minority stressors with overeating and binge eating differed by sexual identity or by race and ethnicity. The sample included 607 SMW (38.2% White, 37.1% African American, 24.7% Latina) with a mean age of 39.7 years. Approximately 17% and 9% of SMW reported overeating and binge eating, respectively, in the past 3 months. Greater stigma consciousness was associated with higher odds of overeating (AOR 1.31, 95% CI = 1.03-1.66). We found no significant associations between minority stressors and binge eating. Past-year depression did not mediate associations between minority stressors and overeating or binge eating. Although we found no sexual identity differences, stigma consciousness among Latina SMW was associated with higher odds of overeating relative to White SMW (AOR 1.95, 95% CI = 1.21-3.12) and African American SMW (AOR 1.99, 95% CI = 1.19-3.31). Findings highlight the importance of screening SMW for stigma consciousness as a correlate of overeating and considering racial and ethnic differences in overeating and binge eating in this population.

Adding sexual orientation questions to statewide public health surveillance: New Mexico's experience.

We examined refusal rates for sensitive demographic questions to determine whether questions on sexual orientation are too sensitive for routine use on public health surveys. We compared the percentage of active refusals in New Mexico for a sexual orientation question and 6 other sensitive demographic questions. In 2007 and 2008, refusal rates for sexual orientation questions were similar to rates for questions on race/ethnicity and weight and significantly lower than rates for questions on household income. Perceptions that sexual orientation is too controversial a topic to be included on state surveys may be unfounded.

Understanding young adult physical activity, alcohol and tobacco use in community colleges and 4-year post-secondary institutions: A cross-sectional analysis of epidemiological surveillance data.

BACKGROUND: Young adults experience many adverse health behavior changes as they transition from adolescence into adulthood. A better understanding of the relationships between health promoting and risky health behaviors may aid in the development of health promotion interventions for various types of young adult post-secondary students. Therefore, the purpose of this study was to examine associations between alcohol and tobacco use and physical activity among 2-year and 4-year college students. METHODS: Cross-sectional analyses were conducted using 2007 survey data, collected as part of an on-going post-secondary health surveillance system in Minnesota. Students were randomly selected to participant from 14 Minnesota colleges and universities (six 2-year community and/or technical colleges, eight 4-year post-secondary institutions). The 2007 surveillance data included 9,931 respondents. RESULTS: The prevalence of demographic characteristics and health behaviors (e.g., physical activity, tobacco use) differed between young adults attending 2-year and 4-year post-secondary institutions; in general, those attending 2-year institutions are representative of more at-risk populations. Overall, higher levels of moderate, vigorous and strengthening physical activity were associated with higher levels of alcohol consumption and lower levels of smoking. In general, despite the disparities in the prevalence of these risk behaviors, the associations between the behaviors did not differ substantially between 2-year and 4-year post-secondary populations. CONCLUSIONS: These findings illustrate links between leading risk behaviors. Interventions targeting multiple risk behaviors among young adults may warrant further consideration. Overall, future research is needed to support and inform young adult health promotion efforts that may be implemented in a wide array of post-secondary institutions.

Differences in length of stay and discharge destination among patients with substance use disorders: The effect of Substance Use Intervention Team (SUIT) consultation service.

BACKGROUND: Addiction medicine consultation services (ACS) may improve outcomes of hospitalized patients with substance use disorders (SUD). Our aim was to examine the difference in length of stay and the hazard ratio for a routine hospital discharge between SUD patients receiving and not receiving ACS. METHODS: Structured EHR data from 2018 of 1,900 adult patients with a SUD-related diagnostic code at an urban academic health center were examined among 35,541 total encounters. Cox proportional hazards regression models were fit using a cause-specific approach to examine differences in hospital outcome (i.e., routine discharge, leaving against medical advice, in-hospital death, or transfer to another level of care). Models were adjusted for age, sex, race, ethnicity, insurance status, and comorbidities. RESULTS: Length of stay was shorter among encounters with a SUD that received a SUIT consultation versus those admissions that did not receive one (5.77 v. 6.54 days, p<0.01). In adjusted analyses, admissions that received a SUIT consultation had a higher hazard of a routine discharge [hazard ratio (95% confidence interval): 1.16 (1.03-1.30)] compared to those not receiving a SUIT consultation. CONCLUSIONS: The SUIT consultation service was associated with a reduced length of stay and an increased hazard of a routine discharge. The SUIT model may serve as a benchmark and inform other health systems attempting to improve outcomes in SUD patient cohorts.

Gender Expression and Sexual Orientation Differences in Diet Quality and Eating Habits from Adolescence to Young Adulthood.

BACKGROUND: Diet and eating habits during youth have implications on diet and eating habits during adulthood, however, little longitudinal research has examined sexual orientation and gender expression differences in diet. OBJECTIVE: Our aim was to examine sexual orientation and gender expression differences in diet quality and eating habits from adolescence to young adulthood. DESIGN: Data across multiple time points from the longitudinal Growing Up Today Study cohorts (1997 to 2011) were used. PARTICIPANTS/SETTING: Participants (n=12,880; aged 10 to 23 years) were the children of women from the Nurses' Health Study II cohort. MAIN OUTCOME MEASURES: Diet quality scores were assessed using the Alternative Healthy Eating Index-2010. In addition, breakfast consumption (≥5 days/wk) and family dinners (≥5 days/wk) were assessed. STATISTICAL ANALYSES PERFORMED: Multivariable generalized estimating equation regression models were fit to estimate sexual orientation and gender expression differences in diet quality scores, breakfast consumption, and family dinners, stratified by sex assigned at birth over available repeated measures. RESULTS: "Gender-nonconforming" males had significantly higher diet quality scores than "very gender-conforming" males (P<0.05). Diet quality scores did not differ by gender expression among females. "Mostly heterosexual" females and gay males had higher diet quality scores than their same-sex completely heterosexual counterparts (P<0.05). Adjustment for mother's diet quality scores attenuated effects, except for gay males (P<0.05). "Gender-nonconforming" females were less likely to consume breakfast than "very gender-conforming" females (P<0.05). Similar results were found for "mostly heterosexual" and bisexual compared to completely heterosexual females. There were no gender expression or sexual orientation differences in family dinners among males and females. CONCLUSIONS: Sexual orientation and gender expression have independent effects on diet quality scores and eating habits for both males and females. Very gender-conforming and completely heterosexual males had the lowest diet quality scores compared to other gender expression and sexual orientation groups. Additional research to explore the effects of sexual orientation and gender expression on diet-related health is needed to build upon these findings.

Risk of Type 2 Diabetes Among Lesbian, Bisexual, and Heterosexual Women: Findings From the Nurses' Health Study II.

OBJECTIVE: Lesbian and bisexual (LB) women are more likely than heterosexual women to exhibit risk factors for type 2 diabetes, but studies estimating the burden of type 2 diabetes among LB women are uncommon and limited to cross-sectional designs. This study investigated incidence of type 2 diabetes in LB women and heterosexual women in a large, longitudinal U.S. cohort. RESEARCH DESIGN AND METHODS: Women participating in the Nurses' Health Study II (NHS II) ages 24-44 years in 1989 were prospectively followed through 2013. Self-reported clinician diagnosis of type 2 diabetes was assessed every other year to identify incidence. Of the participants, 1,267 identified as lesbian or bisexual and 92,983 identified as heterosexual. Cox proportional hazards regression was used to model incidence of type 2 diabetes. RESULTS: LB women had a 27% higher risk of developing type 2 diabetes than heterosexual women (adjusted incidence rate ratio [IRR] 1.27, 95% CI 1.05, 1.54). Differences between LB women and heterosexual women in risk of type 2 diabetes were greater during younger ages (sexual orientation-by-age interaction, P < 0.001). BMI mediated the relationship between sexual orientation and type 2 diabetes; the IRR was completely attenuated when BMI was added to the model (IRR 0.85, 95% CI 0.70, 1.03). CONCLUSIONS: Findings indicate that LB women develop type 2 diabetes at younger ages than heterosexual women. Higher BMI in LB women is an important contributor to this disparity. Public health and clinical efforts to prevent, detect, and manage obesity and type 2 diabetes among LB women are warranted.

Physical Activity and Sedentary Behaviors Among Lesbian, Bisexual, and Heterosexual Women: Findings from the Nurses' Health Study II.

INTRODUCTION: Lesbian and bisexual (LB) women are at greater risk of obesity than heterosexuals. However, few studies have examined sexual orientation differences in physical activity (PA) and even fewer have examined differences in sedentary behaviors. This study assessed PA more comprehensively than previous research by including aerobic PA, strengthening PA, and sitting time, to explore sexual orientation differences among adult women. METHODS: Nearly 100,000 women from Nurses' Health Study II were included in multivariable-adjusted repeated measures analyses. PA and sedentary behaviors were assessed in 1989, 1991, 1997, 2001, 2005, and 2009 (age range: 24-64 years). Aerobic PA was converted to metabolic equivalent task (MET)-hours/week, whereas strengthening PA and sedentary behaviors were measured in hours/week. About 1.3% of the sample identified as lesbian (n = 926) or bisexual (n = 415). RESULTS: On average over repeated measures, LB women reported engaging in 2-3 MET-hours/week more of total aerobic PA (ß [95% confidence interval, CI]: lesbian: 2.0 MET-hours/week [0.6-3.4]; bisexual: 2.8 MET-hours/week [0.7-4.7]) than heterosexual women. Bisexual women reported engaging in 0.2 hours/week more of strengthening PA (95% CI: 0.06-0.42) than heterosexuals; there were no differences between lesbians and heterosexuals in strengthening PA. LB women reported sitting an average of 4-5 hours/week more than heterosexuals (lesbian: 4.1 hours/week [3.1-5.2]; bisexual: 5.1 hours/week [3.6-6.7]). CONCLUSIONS: Interventions promoting less sitting time among LB women may be warranted. Additionally, findings highlight need for more research into other modifiable factors besides PA, such as minority stress or disordered eating behaviors that may contribute to greater obesity among LB women.