Comparing the Rates of Early Childhood Victimization across Sexual Orientations: Heterosexual, Lesbian, Gay, Bisexual, and Mostly Heterosexual

Randomised controlled trial of LGBTQ-affirmative cognitive-behavioural therapy for sexual minority women's minority stress, mental health and hazardous drinking: Project EQuIP protocol

INTRODUCTION

Sexual minority women represent one of the highest-risk groups for hazardous drinking and comorbid mental health problems (eg, depression, anxiety). Research has identified cognitive (eg, expectations of rejection), affective (eg, emotion dysregulation) and behavioural (eg, avoidant coping) pathways through which minority stress (eg, stigma) places sexual minority women at disproportionate risk of hazardous drinking and comorbid depression/anxiety; yet no evidence-based interventions have been tested to address these pathways in this population. This article describes the design of Project EQuIP (Empowering Queer Identities in Psychotherapy), a randomised controlled trial of a transdiagnostic lesbian, gay, bisexual, transgender, queer (LGBTQ)-affirmative cognitive-behavioural therapy intervention (CBT) designed to improve minority stress coping and reduce sexual minority women's hazardous drinking and mental health comorbidities.

METHODS AND ANALYSIS

This two-arm randomised controlled trial, funded by the National Institute on Alcohol Abuse and Alcoholism, has two objectives: (1) test the efficacy of 10 sessions of LGBTQ-affirmative CBT compared with 10 sessions of supportive counselling for sexual minority women in the community (anticipated n=450) who report hazardous alcohol use and meet criteria for a Diagnostic and Statistical Manual of Mental Disorders - 5 diagnosis of a depression or anxiety disorder and (2) examine psychosocial mechanisms and demographic factors as potential mediators and moderators, respectively, of the treatment-outcome relationship. This study's primary outcome is change in the proportion of heavy drinking days. Secondary outcomes are changes in depressive and anxious symptoms.

ETHICS AND DISSEMINATION

The Yale University Human Subjects Committee reviewed and approved the research protocol. Results of this study will be disseminated to researchers and practitioners through peer-review publications and conference presentations, and directly to study participants.

TRIAL REGISTRATION NUMBER

Registered on 17 August 2022 (ClinicalTrials.gov identifier: NCT05509166).

Peer Bullying Victimization Trajectories for Sexually and Gender Diverse Youth from Early Childhood to Late Adolescence

Sexually and gender diverse (SGD) youth experience more peer bullying victimization than heterosexual, cisgender youth during adolescence, yet the emergence and persistence of these disparities remain underexplored. Also, it is unclear which factors are associated with these disparities across development, and how these disparities are linked to late adolescent health discrepancies. This study utilized the sample from the Millennium Cohort Study in Britain (N = 10,080; 51.3% assigned female at birth; Mage = 2.28, SDage = 0.46 at Wave 2), in which 23.74% of youth reported non-heterosexual attraction, 21.59% reported non-heterosexual identity, and 1.08% reported gender identity not in line with the sex assigned at birth. Using latent class growth modeling, four peer bullying victimization trajectories were identified, with early peak (7.2%), late childhood peak (6.3%), adolescence onset (12.8%), and low (73.6%) rates of victimization. SGD youth, compared to heterosexual and cisgender youth, were found to have increased odds of being in the victimization-involved classes, especially the adolescence onset class. The study further revealed that SGD youth reported more mental health and relational difficulties in childhood, which were linked to their heightened risk of longer-lasting victimization. Further, long-term victimization was found to partially account for the disparities in health and well-being for SGD youth in late adolescence. In conclusion, SGD youth were more likely to experience longer-lasting bullying victimization during childhood and adolescence, its related mental and relational vulnerabilities were already established in childhood, and such victimization disparities were further linked to their detrimental health and well-being in late adolescence. The design, hypotheses, and target analyses of the current study were preregistered on 21st April 2023 at https://osf.io/f2zxy .

Outlining Individual and Contextual Factors Related to LGBTQ+ Bullying: A Systematic Review of Two Decades of Research

Scientific interest in lesbian, gay, bisexual, transgender, queer and any other sexual orientation, gender identity and/or expression (LGBTQ+) bullying in educational settings has grown exponentially in recent years. However, the varied ways of measuring its occurrence and associated factors have made it difficult to achieve a holistic understanding of this problem. Therefore, this systematic review aimed to provide an updated overview of individual and contextual factors related to LGBTQ+ bullying over the past two decades, based on the measurement approach to this phenomenon. Studies published from 2000 to 2020 were analyzed following the Preferred Reporting Items for Systematic reviews and Meta-Analyses strategy. Inclusion and exclusion criteria were applied in a staggered process, and 111 articles met all the criteria. Studies focusing on LGBTQ+ bullying victimization or aggression were eligible for inclusion. Our analysis revealed LGBTQ+ bullying is usually examined by measures of general aggressions (47.8%) from the victims' perspective (87.3%). The best-represented factors across studies were individual characteristics (63.1%; n = 70), especially participants' sexual orientation and gender identity and expression (68.5%). Boys/males, from a binary gender perspective, and sexual and gender minority youth in general, were more at risk of being targeted for LGBTQ+ bullying. Although contextual factors were far less well-represented, the results revealed that gay-straight alliances, anti-homophobia policies, and social support act as protective factors. This review highlights the need to analyze LGBTQ+ bullying considering the full spectrum of sexual and gender diversity, to examine in more detail its contextual risk/protective factors, and to design public policies and psychoeducational programs in order to address the low effectiveness of generic interventions. Implications for future research and practice are discussed.

Health Outcomes of Sexual Minority Women Who Have Experienced Adverse Childhood Experiences: A Scoping Review

Sexual minority women (SMW; e.g., lesbian, bisexual) report higher rates of almost every negative physical health (e.g., asthma, arthritis, cardiovascular disease), mental health (e.g., depression, anxiety), and substance use outcome compared to heterosexual women. Adverse Childhood Experiences (ACEs) have been identified as risk factors for negative health outcomes. Despite this, no study to date has synthesized existing literature examining ACEs and health outcomes among SMW. This gap is important because SMW are significantly more likely than heterosexual women to report every type of ACE and a higher total number of ACEs. Therefore, using a scoping review methodology, we sought to expand understanding of the relationship between ACEs and health outcomes among SMW. Using the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for. Scoping Reviews protocol, we searched five databases: Web of Science, PsycInfo, CINAHL, PubMed, and Embase for studies published between January 2000 and June 2021 that examined mental health, physical health, and/or substance use risk factors and outcomes among adult cisgender SMW who report ACEs. Our search yielded 840 unique results. Studies were screened independently by two authors to determine eligibility, and 42 met full inclusion criteria. Our findings provide strong evidence that ACEs are an important risk factor for multiple negative mental health and substance use outcomes among SMW. However, findings were mixed with respect to some health risk behaviors and physical health outcomes among SMW, highlighting the need for future research to clarify these relationships.

Contextualizing Cisgender Women's Histories of Intimate Partner Violence Victimization With Men and Women

Sexual minoritized women (SMW) are more likely than exclusively heterosexual women to experience intimate partner violence (IPV). We conducted in-depth interviews with a clinic-based sample of plurisexual SMW (n = 25) ages 18 to 34 about the gender of their perpetrators. Participants primarily experienced physical and sexual IPV in relationships with men and emotional abuse in relationships with women. IPV perpetrated by men often included weapons with women fearing for their lives. Offering patients information about IPV resources and supports that do not make assumptions about women's sexualities may create more opportunity for empathic and effective communication with SMW experiencing IPV.

Sexual orientations in association between childhood maltreatment and depression among undergraduates in mainland of China

BACKGROUND

There is growing evidence that sexual minorities including lesbian, gay, bisexual and questioning individuals (LGBQ) have significantly higher rates of childhood maltreatment than heterosexuals. However, few studies focused on the association between different type of childhood maltreatment and depression in LGBQs.

METHODS

Cross-sectional study by random sampling was conducted among the undergraduates in mainland of China. A total of 1920 undergraduates from different majors and colleges completed self-report questionnaires to record depression, childhood maltreatment, sexual orientation and other related information. The associations were examined via a set of logistic regression analysis.

RESULTS

Compared to the participants who had never experienced childhood maltreatment, the participants who reported emotional abuse (p < 0.001) and sexual abuse (p < 0.05) had higher odds of depression. The LGBQs have higher risk of being the victims of childhood maltreatment. The prevalence of depression was much higher in the LGBQ than that in the heterosexuals (33.9 % vs 16.1 %, χ2 = 43.627, p < 0.001). Compared to heterosexual adolescents, LGBQs had significantly higher odds of depression (p < 0.001).

LIMITATIONS

Cross-sectional design, self-reported information, and unable to examine underlying protective factors.

CONCLUSIONS

Emotional abuse, emotional neglect and sexual abuse have stronger association with LGBQ than other kind of childhood maltreatment. Emotional abuse and sexual abuse have stronger association with depression. Sexual abuse has stronger association with depression in LGBQs than heterosexuals. More attention to the mental health should be paid especially in LGBQs to reduce the risk of depression.

Risk and Protective Factors for Intimate Partner Violence Against Bisexual Victims: A Systematic Scoping Review

Bisexual-identifying individuals appear to be at increased risk of experiencing intimate partner violence (IPV) compared to people of other sexualities. The purpose of this systematic scoping review was to examine risk and protective factors for the perpetration of IPV against bisexual victims and to provide a preliminary quality assessment of the included studies. A systematic search of academic and grey literature was conducted in February 2021. Inclusion criteria specified that study participants identified as bisexual, that the study examined risk or protective factors for IPV, and that findings were disaggregated by sexual identity. All potentially eligible references were independently screened by two reviewers, and conflicts settled by a third reviewer. Nine articles published between 2013 and 2021 met criteria for inclusion. Data extraction was completed for all included studies, and findings presented in a narrative synthesis. The review identified a number of risk factors, including bisexual identity, internalised homophobia, discrimination, partner gender, negative childhood experiences and non-monogamy. One study included consideration of a potentially protective factor. The majority of the included studies were cross-sectional in design. More longitudinal studies are needed to clarify temporality of the associations identified and better inform support and prevention efforts. Further implications for future research, policies and practise are discussed.

Open Trial of Trauma-Focused Psychodynamic Psychotherapy for Posttraumatic Stress Disorder Among LGBTQ Individuals

OBJECTIVE

Lesbian, gay, bisexual, transgender, and queer (LGBTQ) individuals report higher rates of exposure to traumatic events and posttraumatic stress disorder (PTSD) compared with heterosexual and cisgender individuals. No treatment outcomes research has focused on PTSD in the LGBTQ population. Trauma-focused psychodynamic psychotherapy (TFPP) is a brief, manualized, attachment- and affect-focused psychotherapy for PTSD. TFPP explicitly incorporates broad identity-related and societal factors into its conceptualization of trauma and its consequences, which may be especially helpful for LGBTQ patients with minority stress who seek affirmative care.

METHODS

Fourteen LGBTQ patients with PTSD, assessed with the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5), received 24 sessions of twice-weekly (12 weeks) TFPP via teletherapy provided by supervised early-career therapists inexperienced in the modality. Sessions were videotaped to monitor therapists' treatment adherence. Patients were assessed at baseline, week 5, termination (week 12), and 3 months posttreatment for PTSD symptoms (assessed with the CAPS-5) and secondary outcomes.

RESULTS

TFPP was well tolerated by patients, with 12 (86%) completing the intervention. CAPS-5-measured PTSD symptoms, including dissociation, significantly improved during treatment (mean decrease=-21.8, d=-1.98), and treatment gains were maintained at follow-up. Most patients experienced PTSD clinical response (N=10, 71%) or diagnostic remission (N=7, 50%). Patients generally experienced significant, concomitant improvements in complex PTSD symptoms, general anxiety, depression, and psychosocial functioning. Adherence to the intervention among therapists was high, with 93% of rated sessions meeting adherence standards.

CONCLUSIONS

TFPP shows promise in the treatment of PTSD among sexual and gender minority patients seeking LGBTQ-affirmative PTSD care.

Intersectionality and Adverse Childhood Experiences: Comparing Subgroups of Sex, Race/Ethnicity, and Sexual Orientation

INTRODUCTION

This study investigated the intersectionality of adverse childhood experiences (ACEs) among subgroups of sex, race/ethnicity, and sexual orientation.

METHODS

Using data from the Behavioral Risk Factor Surveillance Survey across 34 states (N=116,712) from 2009 to 2018, authors stratified subgroups of sex (male/female), race/ethnicity (White/Hispanic/Black/multiracial/other), and sexual orientation (heterosexual/bisexual/gay) to investigate the number of ACEs across groups. Analyses were conducted in 2022.

RESULTS

Stratification resulted in 30 distinct subgroups (e.g., bisexual Black females, straight multiracial males) with significant post hoc differences per group. Generally, those identifying as sexual minority individuals had the highest number of ACEs (the top 14 of 30 subgroups), whereas seven of the top ten subgroups were female. Surprisingly, no clear patterns emerged by race/ethnicity, although the two largest groups (straight White females and straight White males) were 27th and 28th of 30, respectively.

CONCLUSIONS

Although studies have examined ACEs by individual demographic variables, less is known about the extent to which ACEs are present in stratified subgroups. Sexual minority subgroups (particularly female bisexual subgroups) trend toward a higher number of ACEs, whereas heterosexual subgroups (regardless of sex) comprised the lowest 6 groups with respect to ACEs. Implications include further examination of bisexual and female subgroups (including specific ACE domain investigations) to identify the vulnerable population.

High prevalence of risky sexual behaviour among key populations receiving antiretroviral therapy at a large HIV clinic in northern Uganda

Background

Risky sexual behaviour (RSB) among key populations pose a significant risk of human immunodeficiency virus (HIV) infection but remains understudied.

Objectives

We assessed the prevalence and factors associated with RSB among key populations living with HIV (KPLHIV) in the post-conflict region of northern Uganda.

Methods

We designed a cross-sectional study using secondary data, with the outcome as RSB defined as having multiple sexual partners, or condomless sex in the past 3 months, or sexual intercourse with a commercial sex worker in the past 3 months, or sexual intercourse under the influence of substance use in the past 3 months. We used modified Poisson regression to determine factors associated with RSB, reported as adjusted risk ratio (aRR) with 95% confidence interval (CI).

Results

We studied 165 participants and 122 (73.9%) reported RSB and this was more likely among heterosexual females (aRR, 2.39; 95% CI, 1.54-3.71), the married (aRR, 1.92; 95% CI, 1.42-2.49) or separated participants (aRR, 1.47; 95% CI, 1.21-1.79), and transgender persons (aRR, 3.71; 95% CI, 2.05-6.71).

Conclusions

RSB is highly prevalent among KPLHIV in northern Uganda so they should be targeted with HIV prevention and behavioural interventions to prevent potential HIV transmission to the general population.

Is it all in the family? Sexual identity differences in DSM-5 alcohol and other drug use disorders and associations with alcohol and other drug misuse history among parents, offspring, and other relatives

Background: The objectives of this study were to: (1) estimate the prevalence of family history of alcohol and other drug (AOD) misuse (positive family history [FH+]) in first- and second-degree relatives across sexual identity subgroups (i.e., lesbian, gay, bisexual, heterosexual); (2) compare AOD misuse among offspring of sexual minority and heterosexual parents; and (3) examine the relationships between FH+ and the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) alcohol use disorder (AUD) and other drug use disorder (ODUD) across sexual identity subgroups. Methods: Data were from the National Epidemiologic Survey on Alcohol and Related Conditions-III (n = 36,309 non-institutionalized U.S. adults aged ≥ 18 years). Data collection occurred in households using structured diagnostic face-to-face interviews during 2012-2013. Results: The presence of FH+ in first- and second-degree relatives was most prevalent among bisexual women relative to all other sexual orientation subgroups. Multivariable regression analyses indicated that the odds of AUD and ODUD were higher among FH+ adults relative to negative family history (FH-) adults. Lesbian and bisexual women had higher odds of AUD compared to heterosexual women, controlling for any FH+; this sexual identity difference was not found for men. There were no significant differences in ODUD between heterosexual FH- men and gay FH- men. We found differences in AOD misuse among offspring of bisexual parents, but not gay or lesbian parents compared to heterosexual parents. Conclusions: Health professionals should consider the higher likelihood of a family history of AOD misuse among sexual minorities, especially bisexual women, when treating these individuals. The lack of differences in AOD misuse among offspring of gay or lesbian parents relative to heterosexual parents warrants attention for legal, policy, and clinical decisions.

Victimization of Sexual Minority Latinx Youth: Results From a National Survey

Limited previous research has explored the intersectional stress and trauma sexual minority (SM) Latinx youth experience generated by being part of at least two minoritized groups. The Dating Violence among Latino Adolescents (DAVILA) study employed a national sample of Latinx youth and queried a range of victimizations in the past year, via a bilingual phone survey. Of the 1525 12-18-year-old youth interviewed for DAVILA, 123 either identified as lesbian, gay, or bisexual or had at least one same-sex dating partner. Measures included the Juvenile Victimization Questionnaire, the Conflict Tactics Scale Short Form, Brief Symptom Inventory, and the Multidimensional Scale of Perceived Social Support. Rates of dating violence, psychological dating violence, sexual victimization, and polyvictimization were significantly higher among sexual minority (SM) youth, compared to heterosexual (HET) youth. Victimized SM youth had significantly more depression, anxiety, and hostility than victimized HET youth. Sexual minority youth also reported less social support from family and significant others. A sequential regression showed psychosocial factors of mental health functioning and social support were associated with the number of victimizations above and beyond demographic factors, including SM status. Together these results underscore that SM youth experience greater adverse outcomes than HET youth. However, it is not SM status that directly relates to victimization, but the negative effects of psychological distress and low social support, that account for the higher number of victimizations of SM Latinx youth. These factors are closely linked to the stigmatization that SM youth face. As such efforts to destigmatize SM identities are needed to address the health and safety of SM Latinx youth.

Sexual Minority Status, Affect Lability, and Suicide Ideation: Buffering Role of Trait Mindfulness

OBJECTIVE

Emotion regulation has been proposed as a mechanism driving sexual orientation disparities in suicide ideation (SI), but little research has examined the role of affect lability in the association of sexual minority identity and SI. As prior research has found trait mindfulness to be associated with lower SI, the objective of the present study was to examine the buffering role of mindfulness in the associations of sexual orientation, affect lability, and SI.

METHOD

The present study used a moderated mediation model to examine a cross-sectional dataset consisting of heterosexual (n = 1511) and sexual minority (n = 355) U.S. college students (N = 1866), to examine whether five facets of mindfulness moderated the indirect association of sexual minority identity on SI via affect lability.

RESULTS

As predicted, sexual minority identity was associated with higher affect lability, which in turn was associated with higher SI. Acting with awareness (i.e., attending to the present activities), describing (i.e., the ability to verbalize inner experiences), and non-judging (i.e., refraining from judging inner experiences) buffered the indirect association of sexual minority identity on SI via affect lability, such that the indirect association weakened at higher levels of those mindfulness facets.

CONCLUSIONS

Our results provide a better understanding of the emotion regulation mechanisms underlying the higher risk of SI among sexual minorities. Future research is needed to examine mindfulness facets as buffers against SI among other communities, and to examine the efficacy of emotion regulation and mindfulness interventions in reducing suicide ideation and other aspects of suicidality (i.e., plans/attempts).HighlightsSexual orientation disparities in suicide ideation (SI) and affect lability.Sexual minority identity linked to higher SI via higher affect lability.Three mindfulness facets attenuated indirect association of identity on SI.

Gender self-concept and hazardous drinking among sexual minority women: Results from the Chicago health and life experiences of women (CHLEW) study

OBJECTIVE

Sexual minority women (SMW; e.g., lesbian, bisexual) report substantially higher rates of hazardous drinking (HD) than heterosexual women.Yet, few studies have examined sub-group differences. In this study, we investigated the relationship between gender self-concept and HD among SMW. Research consistently shows a link between heavier drinking and masculinity. SMW are more likely than heterosexual women to be gender nonconforming, and masculinity among SMW is associated with increased minority stress, a key HD risk factor.

METHODS

We used Wave 3 data from the Chicago Health and Life Experiences of Women study, a longitudinal study of SMW (N = 598), which assessed participants' self-perceived levels of masculinity and femininity and their perception of how masculine/feminine others viewed them. Using multivariable logistic regression, we examined the association between gender self-concept and past 12-month heavy episodic drinking (HED), drinking-related problems, and alcohol dependence.

RESULTS

Controlling for demographics and minority stress, greater masculinity (both self-perceived and perceptions by others) was associated with higher odds of HED and alcohol dependence. Masculinity as perceived by others was associated with higher odds of drinking-related problems. Neither femininity measure was associated with HD. Additionally, minority stress (i.e., discrimination, stigma, internalized stigma) did not account for the relationship between gender self-concept and HD.

CONCLUSIONS/IMPORTANCE

In this sample, masculinity, particularly SMW's beliefs that others viewed them as masculine, was associated with HD. This association was not attributable to differences in minority stress and may be related to differences in gendered drinking norms, which could be targeted in intervention studies.

Understanding the Link Between Adolescent Same-Gender Contact and Unintended Pregnancy: The Role of Early Adversity and Sexual Risk Behavior

Past research suggests an apparent paradox: Women who engage in same-gender sexual behavior show higher rates of unintended pregnancy than women with exclusive other-gender sexual behavior. Such women also have disproportionate rates of early adversity (both harshness, such as abuse or neglect, and unpredictability, such as father absence). We used the Add Health data (N = 5,617 cisgender women) to examine the relative contributions of early adversity, adolescent same-gender sexual behavior, and general sexual risk behavior to women's risks for adult unintended pregnancy. Women who engaged in adolescent same-gender sexual behavior were more likely to report childhood adversity, and both childhood adversity and adolescent same-gender behavior made independent contributions to subsequent rates of unintended pregnancy. The association between adolescent same-gender sexual behavior and adult unintended pregnancy was partially attributable to the fact that women with adolescent same-gender sexual behavior engaged in greater sexual risk behavior more broadly. These findings suggest that same-gender sexual behavior in adolescence may relate to a broader set of sexual risk behaviors that augment future risk for unintended pregnancy, independent of sexual identity. We draw on life history theory to explain this pattern of results and suggest directions for future research.

Sexual Orientation Complexity and Psychosocial/Health Outcomes

Individuals whose sexual attraction or behavior varies from others' expectations based on their sexual identity were initially described as exhibiting sexual orientation discordance. This conceptualization has been challenged as inaccurate and value-laden, and "branchedness" has been suggested as a value-neutral description. Using a United States national sample of 4,530 participants from the 2013-2014 Center for Collegiate Mental Health database, we challenge the empirical distinctness of the phenomenon of sexual orientation discordance by 1) replicating previous work that indicates that branched individuals evidence unique psychosocial and health outcomes relative to non-branched individuals and 2) using stepwise regression to demonstrate that these differences in outcomes can be accounted for by variation in sexual attraction, behavior, and identity and that "discordance" between indicators failed to explain additional variation in outcomes. We encourage researchers to adopt non-normative language and conceptualizations in their study of sexual orientation complexity and branchedness.

Sexual orientation differences in childhood sexual abuse, suicide attempts, and DSM-5 alcohol, tobacco, other drug use, and mental health disorders in the US

BACKGROUND

Childhood sexual abuse (CSA) contributes to increased risk of substance use and mental health disorders in the general population.

OBJECTIVE

To assess the prevalence and associations of CSA and suicide attempts, substance use, and mental health disorders as a function of sex (female, male) and sexual orientation (lesbian, gay, bisexual, heterosexual-identified with same-sex attraction and/or behavior, heterosexual-identified without same-sex attraction and/or behavior, and unsure).

PARTICIPANTS AND SETTING

Data were collected using structured diagnostic face-to-face interviews in a nationally representative sample of 36,309 US adults.

METHODS

We used descriptive statistics and logistic regression modeling to analyze data from the 2012-2013 National Epidemiologic Survey on Alcohol and Related Conditions (NESARC-III).

RESULTS

Childhood sexual abuse was most prevalent among sexual minorities, especially bisexual females. Nearly one-third of bisexual females (30.6%) reported experiencing two or more types of CSA, p < .001. Among all participants, exposure to one or more types of CSA was associated with greater odds of lifetime suicide attempts, Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) alcohol, tobacco or other drug use disorder, and mental health disorders, after adjusting for other childhood adversity/maltreatment and general life stressors.

CONCLUSIONS

Sexual minority females and males in the US are more likely than their heterosexual counterparts to report CSA. Higher risk of suicide attempts and DSM-5 alcohol, tobacco, other drug use, and mental health disorders in adulthood was directly associated with CSA, particularly among bisexual females. Health professionals working with individuals who have experienced CSA should assess these risks and intervene as 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.

The New Genetic Evidence on Same-Gender Sexuality: Implications for Sexual Fluidity and Multiple Forms of Sexual Diversity

In September of 2019, the largest-ever (N = 477,522) genome-wide-association study of same-gender sexuality was published in Science. The primary finding was that multiple genes are significantly associated with ever engaging in same-gender sexual behavior, accounting for between 8-25% of variance in this outcome. Yet an additional finding of this study, which received less attention, has more potential to transform our current understanding of same-gender sexuality: Specifically, the genes associated with ever engaging in same-gender sexual behavior differed from the genes associated with one's relative proportion of same-gender to other-gender behavior. I review recent research on sexual orientation and sexual fluidity to illustrate how these findings speak to longstanding questions regarding distinctions among subtypes of same-gender sexuality (such as mostly-heterosexuality, bisexuality, and exclusive same-gender experience). I conclude by outlining directions for future research on the multiple causes and correlates of same-gender expression.

Sexual Identity Differences in Health Behaviors and Weight Status among Urban High School Students

Although racial/ethnic disparities in childhood obesity are well documented in the United States (U.S.), fewer studies have investigated elevated body mass index (BMI) and related health behaviors among sexual minority youth (SMY; gay/lesbian, bisexual, not sure). We examined pooled data from the 2009-2017 Youth Risk Behavior Surveys, which included high school students from 12 urban U.S. school districts. We used sex-stratified logistic regression models to estimate the association of sexual identity with health behaviors and elevated BMI (reference = heterosexual participants). A total of 133,615 participants were included. Sexual minority boys were more likely to report physical inactivity than heterosexual boys. Gay and not sure boys were also less likely to consume the recommended daily intake of fruit. Bisexual girls were more likely than heterosexual girls to report watching television ≥ 3 hours on a school day and to consume sugar-sweetened beverages (AOR 1.30, 95% CI= 1.18-1.43). All SMY reported higher rates of current tobacco use than their heterosexual peers. Sexual minority girls and bisexual boys had significantly higher rates of obesity than their heterosexual counterparts. These findings can inform tailored health promotion initiatives to reduce obesity risk in SMY.

Association Among Maltreatment, Bullying and Mental Health, Risk Behavior and Sexual Attraction in Chinese Students

OBJECTIVE

To identify the association between sexual attraction, childhood maltreatment and bullying victimization, and mental and behavioral health problems among Chinese adolescents.

METHODS

A cross-sectional study among Chinese high school students by multistage stratified cluster sampling was conducted using a self-reported questionnaire. Participants who were same- or both-sex attracted were identified as sexual minorities, and those who were opposite-sex attracted were identified as heterosexuals. Childhood maltreatment was assessed as physical, emotional, and sexual abuse, and bullying was assessed as traditional and cyberbullying. Psychological distress was assessed as depressive and anxiety symptoms, and self-destructive behavior was assessed as suicidal behavior and nonsuicidal self-injury. Logistic regression and path analysis were conducted to analyze the data.

RESULTS

There were 1360 sexual minority and 15,020 heterosexual respondents. Sexual minority status was associated with increased risk of maltreatment (adjusted odds ratio [AOR] range: 1.25-2.46) and bullying (AOR range: 1.38-1.77) victimization, and a series of health problems (AOR range: 1.85-3.69). Furthermore, childhood maltreatment could partially explain the association of sexual minority status with psychological distress (indirect effect: β = 0.026 for boys; β = 0.086 for girls) and self-destructive behavior (β = 0.056 for boys; β = 0.125 for girls), and bullying could partially explain the association between sexual minority status and psychological distress (β = 0.040 for boys; β = 0.031 for girls).

CONCLUSIONS

Sexual minority adolescents were more likely than heterosexuals to experience different forms of childhood victimization, which may put them at higher risk for mental and behavioral health problems. Interventions based on both family and school are essential.

Associations Among Childhood Household Dysfunction, Sexual Orientation, and DSM-5 Alcohol, Tobacco and Other Substance Use Disorders in Adulthood: Evidence From a National U.S. Survey

OBJECTIVES

This study examined the associations between childhood household dysfunction and adulthood past-year DSM-5 alcohol, tobacco, and other substance use disorders across sexual orientation subgroups (eg, lesbian/gay, bisexual, and heterosexual).

METHODS

Prevalence estimates were based on National Epidemiologic Survey on Alcohol and Related Conditions (NESARC-III) data collected from structured diagnostic face-to-face interviews in a nationally representative sample of 36,309 U.S. adults. Multivariable regression was used to examine associations between childhood household dysfunction and past-year substance use disorders in adulthood.

RESULTS

Sexual minorities, particularly sexual minority women, reported higher rates of childhood household dysfunction (eg, parental/household history of substance-related problems) and adulthood DSM-5 alcohol, tobacco, and substance use disorders. Results of multivariable analyses indicated that childhood histories of parental/household substance-related problems were associated with greater odds of past-year substance use disorders among sexual minorities than heterosexuals, and that such histories may moderate differences among sexual orientation subgroups. The risk of substance use disorders among sexual minority women relative to exclusively heterosexual women (ie, heterosexual-identified women without same-sex attraction or behavior) remained high, even when accounting for household dysfunction. In contrast, there were no such differences between sexual minority men and exclusively heterosexual men.

CONCLUSIONS

Sexual minorities are more likely to have childhood household dysfunction which in turn is associated with a higher risk of developing DSM-5 alcohol, tobacco, and substance use disorders in adulthood, especially among sexual minority women. Healthcare providers who care for individuals raised in dysfunctional households should carefully assess risk for substance use disorders and intervene as needed.

Relying on an "Other" Category Leads to Significant Misclassification of Sexual Minority Participants

Purpose: This study assessed which sexual minority participants selected "Other" if their identity was absent. Methods: This was an online survey; 905 participants saw a limited set of sexual orientation options (bisexual, gay/lesbian, heterosexual, other), and later in the same survey, saw an expanded list. Results: Twenty-one percent of participants chose different orientation labels across questions. When not presented with a "mostly heterosexual" option, 78% of mostly heterosexual participants chose "heterosexual"; 3% chose "other." However, when not presented with an "asexual" label, 100% of asexual participants chose "other." Conclusion: These findings suggest that "other" categories could misclassify a substantial proportion of sexual minority participants.

A Comparison of Violence Victimization and Polyvictimization Experiences Among Sexual Minority and Heterosexual Adolescents and Young Adults

Despite recent civil rights advances for sexual minority communities in the United States, disparities in violence victimization have increased in recent years. Polyvictimization, the experience of multiple types of violence, is common in the United States and may result in mental and physical health consequences above and beyond single-type victimization. However, disparities in polyvictimization among sexual minority young people remain understudied. The purpose of this article was to determine whether there were disparities in monovictimization and polyvictimization among sexual minority young people compared with their heterosexual peers. Data for this article were from The National Longitudinal Study of Adolescent to Adult Health, a nationally representative cohort study started in 1994. Participants reported their experiences with eight types of violence across child abuse, criminal assault, intimate partner violence (IPV), and sexual assault domains. We categorized individuals with no violence victimization as nonvictims, individuals with one form of victimization as monovictims, and individuals with multiple types of victimization as polyvictims. We then compared experiences of each type of victimization and overall monovictimization and polyvictimization by sexual orientation (n = 9,828). Among females, the proportions of individuals experiencing victimization by sexual orientation were significantly different for all forms of violence. Among males, criminal assault, IPV resulting in injury, and nonphysically and physically forced sexual assault differed by sexual orientation. Compared with 100% heterosexual peers, individuals who were mostly heterosexual had significantly increased odds of monovictimization and polyvictimization compared with no victimization. Bisexual individuals had significantly increased odds of polyvictimiztion, and mostly/100% homosexual individuals had significantly increased odds of monovictimization. Multiple victimization experiences may be a pathway to lifetime health disparities, so our findings may explain many of the health disparities experienced in sexual minority communities. It will be critical to develop and evaluate intervention and prevention programs to eliminate these disparities.

Violence Experiences in Childhood and Adolescence Among Gay Men and Transgender Women Living in Perú: A Qualitative Exploration

The overall goal of this study was to qualitatively explore the different types of violence experienced by gay men (GM) and transgender women (TW) living in Peru during childhood and adolescence, as well as their potential consequences and sources of protection. Participants were selected using purposive sampling. Recruitment took place in a community-based organization in Lima, Peru. In all, 32 GM and 23 TW participated in a total of four Focus Group Discussions (FGD) and 25 in-depth interviews (IDI). Qualitative data collection was conducted between July and October 2016. Four FGD took place with GM (n = 21) and one with TW (n = 9). In addition, 11 IDI with GM and 14 with TW were conducted. Data were analyzed using descriptive inductive analysis. Three main types of violence were experienced in childhood and adolescence: (a) violence occurring in the home or otherwise perpetrated by family members, (b) school-based violence, and (c) sexual violence. Both GM and TW experience violence within and outside school and home. School systems should make teachers and parents aware of the impact of homophobic and transphobic bullying and violence. Certain modifications in schools, such as having all-gender bathrooms and promoting activities that are not grounded in gender roles, could be very effective at reducing homophobic and transphobic violence. Schools should also address sexual violence more actively, among both male and female students. Parents' attitudes toward homosexuality and gender diversity need to be addressed by future interventions.

Association of sexual minority status, gender nonconformity with childhood victimization and adulthood depressive symptoms: A path analysis

BACKGROUND

Sexual minority status and childhood gender nonconformity have been associated with elevated risks of childhood adversities and poorer mental health.

OBJECTIVE

To explore how abuse and bullying explain the disparities in the associations of sexual minority status and childhood gender nonconformity with adulthood depressive symptoms in men.

PARTICIPANTS AND SETTING

We conducted a cross-sectional study using a self-report questionnaire among Chinese adult men (18-35 years) who were identified as heterosexual (n = 873) and sexual minority (n = 858) in Guangzhou from 2017 to 2019.

METHODS

Structural equation modeling (SEM) were conducted for path analysis.

RESULTS

The levels of exposure to childhood maltreatment were higher in sexual minorities than in straight men, and sexual minority status predicted an increased risk of depressive symptoms via childhood maltreatment (indirect effect: β = 0.026, p = 0.004). Meanwhile, childhood gender nonconformity predicted higher depressive symptoms via both family (indirect effect: β = 0.042, p < 0.001) and school (indirect effect: β = 0.028, p < 0.001) victimization, and there was a direct effect (β = 0.154, p < 0.001) of gender nonconformity on depressive symptoms.

CONCLUSION

Sexual minority status and gender nonconformity are indicators of men's increased risk of childhood victimization and adulthood depressive symptoms. As a result, intervention based on both family and school dimensions needs to be developed.

Sexual Orientation, Adverse Childhood Experiences, and Comorbid DSM-5 Substance Use and Mental Health Disorders

OBJECTIVE

To assess the relationships between adverse childhood experiences (ACEs) and comorbid Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) substance use and mental health disorders across 5 sexual orientation subgroups: lesbian/gay, bisexual, unsure, discordant heterosexual (ie, heterosexual-identified with same-sex attraction or behavior), and concordant heterosexual.

METHODS

Data were from the 2012-2013 National Epidemiologic Survey on Alcohol and Related Conditions-III, a cross-sectional, nationally representative survey of non-institutionalized US adults. Data were collected in households via structured diagnostic face-to-face interviews; the overall response rate was 60.1%. The sample included 36,309 US adults aged 18 years and older.

RESULTS

Sexual minorities (gay, lesbian, bisexual), especially bisexual women, reported the highest prevalence of ACEs and comorbid substance use and mental health disorders. Approximately 43.8% of bisexual women reported 4 or more ACEs, and 38.0% of bisexual women reported comorbid substance use and mental health disorders. Multivariable regression analyses indicated a curvilinear relationship between ACEs and comorbid substance use and mental health disorders, and sexual minorities consistently had a higher ACE mean than concordant heterosexual respondents. The majority of sexual minorities with high levels of ACEs had comorbid substance use and mental health disorders.

CONCLUSIONS

Sexual minorities are exposed to more ACEs than their heterosexual counterparts in the US. We found evidence that US sexual minorities are at higher risk of comorbid substance use and mental health disorders. These findings reinforce the importance of identifying exposure to ACEs and developing trauma-informed interventions to treat comorbidities in those exposed to multiple ACEs, especially sexual minorities.​.

The Role of Psychological Flexibility as a Mediator Between Experienced Sexual Racism and Psychological Distress Among Men of Color Who Have Sex with Men

Previous research has shown that individuals belonging to multiple marginalized groups experience higher levels of psychological distress, which is linked to experiencing discrimination based on their multiple marginalized identities. One way that gay and bisexual men of color face discrimination is in the dating and sexual situations within the men who have sex with men community, which is sometimes termed sexual racism. Previous research has found that experienced discrimination on the basis of their race/ethnicity is positively related to depressive symptoms. The present study examined whether psychological flexibility mediates the effect of experiencing sexual racism on psychological distress. In this study, 439 men of color who have sex with men completed a series of questionnaires online on Amazon Mechanical Turk. Results showed that the indirect effects of experiencing sexual racism through psychological flexibility on depression (95% CI .22, .39), anxiety (95% CI .15, .29), and stress (95% CI .18, .33) were significant while controlling for demographic variables. Therefore, this model showed that psychological flexibility mediated and explained the effect of experiencing sexual racism on psychological distress. Clinical implications and future avenues of research are discussed.

Adverse childhood experiences and mental health: Comparing the link in rural and urban men who have sex with men

BACKGROUND

Research shows individuals experiencing adverse childhood experiences (ACEs) as well as identifying as a man who has sex with other men (MSM) are at an increased risk for mental health issues. Less has been studied, however, on ACEs in MSM; with even fewer studies investigating non-urban (e.g., rural/small town/suburban) MSM, as most research features urban samples. This is problematic due to studies showing that rurality can influence the behavior of MSM. The current study comparatively investigates the impact of ACEs on the mental health of rural/small town/suburban and urban MSM.

METHODS

Participants included 156 MSM residing in Oklahoma. Linear regression was used to test the association between ACEs' and mental health (anxiety, depressive symptoms, and loneliness). Split-sample regressions were conducted on rural/small town/suburban and urban MSM.

RESULTS

ACEs were associated with all three mental health outcomes in the full sample. However, ACEs were significantly linked to anxiety and depressive symptoms only in urban MSM.

LIMITATIONS

Limitations include a smaller sample size with limited racial/ethnic variations.

CONCLUSIONS

Results suggest that living in an urban environment may amplify the risks of ACEs, rural/small town/suburban MSM may acquire outside, unique support networks which work to limit the effect of ACEs, or that rural/small town/suburban MSM may manifest the effects of ACEs differently (or a combination of the three). Trauma-informed programming has been shown to effectively reduce mental health issues, yet consideration is generally not given with regards to rurality. Future programming and research should consider rurality/urbanity as influential factor.

Lifetime Trauma and Cardiometabolic Risk in Sexual Minority Women

Background: Sexual minority women (SMW; such as lesbian, bisexual, and mostly lesbian) exhibit excess cardiometabolic risk, yet factors that contribute to cardiometabolic risk in this population are poorly understood. Trauma exposure has been posited as a contributor to cardiometabolic risk in SMW. Materials and Methods: An analysis of data from Wave 3 of the Chicago Health and Life Experiences of Women Study was conducted. Multinomial logistic regression was used to examine correlates of trauma. Next, multiple logistic regression was used to examine the associations of different forms of trauma throughout the life course (childhood, adulthood, and lifetime), with psychosocial and behavioral risk factors and self-reported cardiometabolic risk (obesity, hypertension, and diabetes) in SMW adjusted for relevant covariates. Results: A total of 547 participants were included. Older age was associated with higher rates of childhood and adulthood trauma. SMW of color reported higher rates of childhood trauma than white participants. Higher education was associated with lower rates of adulthood trauma. All forms of trauma were associated with probable diagnosis of post-traumatic stress disorder and lower perceived social support. Adult trauma was associated with anxiety, whereas childhood and lifetime trauma were associated with higher odds of depression. No significant associations between forms of trauma and behavioral risk factors were noted, except that childhood trauma was associated with higher odds of past-3-month overeating. Logistic regression models examining the association of trauma and cardiometabolic risk revealed that childhood trauma was an independent risk factor for diabetes. Adulthood and lifetime trauma were significantly associated with obesity and hypertension. Conclusions: Trauma emerged as an independent risk factor for cardiometabolic risk in SMW. These findings suggest that clinicians should screen for trauma as a cardiovascular risk factor in SMW, with special attention to SMW most at risk.

Examining sexual racism and body dissatisfaction among men of color who have sex with men: The moderating role of body image inflexibility

Body image research with men who have sex with men (MSM) has largely focused on White MSM. The current study aimed to investigate whether men of color who have sex with men (MCSM) report similar levels of body dissatisfaction as White MSM. We also studied whether (a) the experience of sexual racism, a unique stressor for MCSM, is related to body dissatisfaction and (b) body image inflexibility moderates the relationship between sexual racism and muscularity-oriented behaviors. White MSM and MCSM (total N = 887) recruited through Amazon Mechanical Turk completed questionnaires assessing body dissatisfaction, body image flexibility, and experienced sexual racism on Qualtrics. We found that MCSM report more engagement in behaviors aimed at changing their bodies than White MSM. Additionally, experiencing sexual racism was related to higher body dissatisfaction and body image inflexibility in MCSM. In addition, body image inflexibility moderated by strengthening the association between experiencing sexual racism and muscularity-oriented behaviors. The present study highlights the need for further research with this understudied population, including intervention studies on mitigating the impact of experiencing sexual racism by increasing psychological and body image flexibility and studies aimed at reducing the incidence of sexual racism.

Introduction to the Special Section on Bisexual Health: Can You See Us Now?

Despite comprising the largest proportion of the "lesbian, gay, and bisexual" population, research focusing on the unique health concerns and needs of bisexual individuals is relatively scarce. While health disparities are increasingly well documented among lesbian, gay, bisexual, and transgender individuals relative to their heterosexual and cisgender counterparts, gaps remain in our basic understanding of how health status, behaviors, and outcomes vary within these groups, especially bisexual individuals. The lack of specified research on bisexual health is even more curious given that, when separated from both heterosexual and gay/lesbian individuals, bisexual individuals consistently report higher rates of a wide range of negative health outcomes, including mood and anxiety disorders, substance use, suicidality, as well as disparities related to healthcare access and utilization. Indeed, in scientific research, mass media, and in public health interventions, bisexual individuals remain relatively invisible. This Special Section represents an effort to shed light on a new generation of quantitative, qualitative, and mixed methods research studies that examine health-related concerns, outcomes, and intervention opportunities specifically among diverse samples of bisexual individuals from a variety of social and cultural contexts. The research herein focuses on intersections of multiple identities, the development of new measures, the use of large national data sets, and diverse groups of self-identified bisexual men (who tend to be least visible in health research). Findings from these studies will significantly advance our knowledge of factors associated with health disparities, as well as health and well-being more generally, among bisexual individuals and will help to inform directions for future health promotion research and intervention efforts.

Relationship Between Childhood Sexual Abuse and HIV-Related Risks Among Men Who Have Sex with Men: Findings from Mainland China

Men who have sex with men (MSM) carry the burden of HIV infection in China. Outside of China, a history of childhood sexual abuse (CSA) has been associated with HIV-related risks (behavioral, sexual, and mental health outcomes) among MSM. We therefore evaluated the relationship between CSA and these HIV-related risks among MSM in China. Cross-sectional data were collected via a survey from gay websites and social networking applications from MSM in 30 provinces in mainland China during a 3-month period in 2014 and 2015. Overall, 999 screened MSM who responded to questions on CSA were included. Multinomial logistic regression models-adjusted for sociodemographic confounders-showed that men who reported experiencing regular CSA and contact CSA, respectively, were more likely to use substances (adjusted odds ratio [AOR], 1.91; 95% confidence interval [CI] 1.39-2.62 and AOR, 1.70; 95% CI 1.25-2.31), had a history of sexually transmitted infections (AOR, 1.81; 95% CI 1.29-2.55 and AOR, 1.65; 95% CI 1.18-2.96), had more male sexual partners (AOR, 1.06; 95% CI 1.04-1.09 and AOR, 1.05; 95% CI 1.03-1.08), engaged in more condomless sex with men (AOR, 1.89; 95% CI 1.39-2.56 and AOR, 1.72; 95% CI 1.29-2.30), and experienced more psychological distress (AOR, 1.05; 95% CI 1.02-1.08 and AOR, 1.05; 95% CI 1.03-1.08). Both frequent and contact forms of CSA were positively associated with HIV-related risks among MSM, suggesting that general CSA prevention strategies and interventions are needed to support this population.

Disparities for LGBTQ and Gender Nonconforming Adolescents

OBJECTIVES

To identify patterns of childhood adversity in a sample of adolescents and assess disparities in these experiences for lesbian, gay, bisexual, transgender, and questioning adolescents and by level of gender nonconformity.

METHOD

By using the cross-sectional, statewide, anonymous 2016 Minnesota Student Survey, 81 885 students were included in the current study (50.59% male; mean age = 15.51). Participants were enrolled in grades 9 and 11 in a total of 348 schools.

RESULTS

Four patterns of childhood adversity were identified with sex-stratified latent class analyses (entropy = 0.833 males; 0.833 females), ranging from relatively low levels of abuse (85.3% males; 80.1% females) to polyvictimization (0.84% males; 1.98% females). A regression analysis showed that compared with heterosexual adolescents, gay, lesbian, bisexual, and questioning adolescents were more likely to be classified into profiles characterized by polyvictimization (odds ratio [OR] 1.81-7.53) and psychological and/or physical abuse (OR 1.29-3.12), than no or low adversity. Similarly, compared with nontransgender adolescents, transgender adolescents were more likely to be classified into profiles characterized by patterns of polyvictimization (OR 1.49-2.91) and psychological and/or physical abuse (OR 1.23-1.96). A higher level of gender nonconformity predicted a higher likelihood of being classified into each adversity profile compared with the no or low adversity profile (OR 1.14-1.45).

CONCLUSIONS

Sexual minority adolescents and adolescents with high levels of gender nonconformity are vulnerable to experience adversity. The disparities for lesbian, gay, bisexual, transgender, and questioning adolescents and adolescents with high gender nonconformity highlight the variation in patterns of childhood adversity that these youth are at risk of experiencing. The findings reveal the need for further research on the benefits and harm of screening for childhood adversity by physicians and pediatricians.

Violence as Mediating Variable in Mental Health Disparities Associated to Sexual Orientation Among Mexican Youths

In this study, we explored the role of sex as an effect-modifying variable in the association between sexual orientation and mental health in Mexican youth. In addition, we tested if violent experiences in the family and the school and attitudes toward homosexuality could act as mediating variables in such association. Data from three representative surveys performed in 2007, 2009, and 2013 among Mexican high school students were analyzed. Two dimensions of sexual orientation were evaluated: romantic partnership and sexual behavior. The outcomes were negative and positive mood, suicidal ideation and intent, self-concept, and self-esteem. There were differences by gender because in males, there were more disparities in mental health associated with sexual orientation (suicidal ideation and attempt, negative and positive mood, negative self-concept, and family-related self-esteem) than in females (suicidal ideation and negative mood). Experiences of school violence were mediators in the relationship between sexual orientation and most health outcomes in males.

Violence motivated by perception of sexual orientation and gender identity: a systematic review

OBJECTIVE

To assess the prevalence of physical and sexual violence motivated by perception of sexual orientation and gender identity in sexual and gender minorities.

METHODS

We searched nine databases without language restrictions for peer-reviewed and grey literature published from 2000 to April 2016. We included studies with more than 50 participants that measured the prevalence of physical and sexual violence perceived as being motivated by sexual orientation and gender identity or gender expression. We excluded intimate partner violence and self-harm. Due to heterogeneity and the absence of confidence intervals in most studies, we made no meta-analysis.

FINDINGS

We included 76 articles from 50 countries. These covered 74 studies conducted between 1995 and 2014, including a total of 202 607 sexual and gender minority participants. The quality of data was relatively poor due to a lack of standardized measures and sometimes small and non-randomized samples. In studies where all sexual and gender minorities were analysed as one population, the prevalence of physical and sexual violence ranged from 6% (in a study including 240 people) to 25% (49/196 people) and 5.6% (28/504) to 11.4% (55/484), respectively. For transgender people the prevalence ranged from 11.8% (of a subsample of 34 people) to 68.2% (75/110) and 7.0% (in a study including 255 people) to 49.1% (54/110).

CONCLUSION

More data are needed on the prevalence, risk factors and consequences of physical and sexual violence motivated by sexual orientation and gender identity in different geographical and cultural settings. National violence prevention policies and interventions should include sexual and gender minorities.

Childhood Abuse Experiences and the COMT and MTHFR Genetic Variants Associated With Male Sexual Orientation in the Han Chinese Populations: A Case-Control Study

BACKGROUND

Although it is widely acknowledged that genetic and environmental factors are involved in the development of male homosexuality, the causes are not fully understood.

AIM

To explore the association and interaction of childhood abuse experiences and genetic variants of the catechol-O-methyltransferase (COMT) and methylenetetrahydrofolate reductase (MTHFR) genes with the development of male homosexuality.

METHODS

A case-control study of 537 exclusively homosexual men and 583 exclusively heterosexual men was conducted, with data collected from March 2013 to August 2015. Data were analyzed using χ² tests and logistic regression models.

OUTCOMES

Sociodemographic characteristics, childhood abuse experiences, and polymorphisms of COMT at rs4680, rs4818, and rs6267 and MTHFR at rs1801133.

RESULTS

More frequent occurrence of physical (adjusted odds ratio [aOR] = 1.78), emotional (aOR = 2.07), and sexual (aOR = 2.53) abuse during childhood was significantly associated with the development of male homosexuality. The polymorphisms of MTHFR at rs1801133 and COMT at rs4818 also were significantly associated with the development of male homosexuality in the homozygote comparisons (T/T vs C/C at rs1801133, aOR = 1.68; G/G vs C/C at rs4818, aOR = 1.75). In addition, significant interaction effects between childhood abuse experiences and the COMT and MTHFR genetic variants on the development of male homosexuality were found.

CLINICAL TRANSLATION

This is the first time that an association of childhood abuse, COMT and MTHFR genetic variants, and their interactions with development of male homosexuality was exhaustively explored, which could help provide new insight into the etiology of male homosexuality.

STRENGTHS AND LIMITATIONS

Because homosexual men are a relatively obscure population, it was impossible to select the study participants by random sampling, which could lead to selection bias. In addition, because this was a case-control study, recall bias was inevitable, and we could not verify causality.

CONCLUSIONS

Childhood abuse and the COMT and MTHFR genetic variants could be positively associated with the development of homosexuality. However, it remains unknown how these factors jointly play a role in the development of homosexuality, and more studies in different ethnic populations and with a larger sample and a prospective design are required to confirm our findings. Qin J-B, Zhao G-L, Wang F, et al. Childhood Abuse Experiences and the COMT and MTHFR Genetic Variants Associated With Male Sexual Orientation in the Han Chinese Populations: A Case-Control Study. J Sex Med 2018;15:29-42.