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Background Little is known about the prevalence and correlates of intimate partner violence (IPV) among gay, bisexual and other men who have sex with men (GBMSM) in the UK. The aim of this study was to investigate the prevalence of IPV, associations of socio-economic and psychosocial factors with IPV, and the association of IPV with depression and sexual behaviour, among GBMSM in the PROUD trial of pre-exposure prophylaxis (PrEP). Methods PROUD enrolled 544 HIV-negative participants in England from 2012 to 2014; participants were randomised to immediate or deferred PrEP. This analysis included 436 GBMSM who had IPV data at month-12 and/or 24. Prevalence of IPV victimization and perpetration (lifetime, and in the past year) was assessed at these time-points. Generalized estimating equations were used to investigate associations with IPV, using pooled data from both time-points. Results At month-12 ( N  = 410), 44.9% of men reported ever being a victim of IPV, 15.6% in the last year, and 19.5% reported ever perpetrating IPV, 7.8% in the last year. At month-24 ( N  = 333), the corresponding prevalence was 40.2 and 14.7% for lifetime and past year IPV victimization and 18.0 and 6.9% for lifetime and past year IPV perpetration. IPV prevalence did not differ by randomised arm. Men reporting internalized homophobia and sexualized drug use were more likely to report IPV. Lifetime and last year experience of IPV victimization and perpetration were strongly associated with depressive symptoms (PHQ-9 ≥ 10) (adjusted for socio-demographics: lifetime IPV victimization PR 2.57 [95% CI: 1.71, 3.86]; past year IPV victimization PR 2.93 [95% CI: 1.96, 4.40]; lifetime IPV perpetration PR 2.87 [95% CI: 1.91, 4.32]; past year IPV perpetration PR 3.47 [95% CI: 2.13, 5.64], p  < 0.001 for all); IPV was not consistently associated with measures of condomless anal sex or high partner numbers. Conclusions GBMSM at high-risk of HIV who are seeking/taking PrEP may experience a high burden of IPV, which may be linked to depression. Training on awareness of and enquiry for IPV among GBMSM in sexual health clinics is recommended. Trial registration ClinicalTrials.gov identifier: NCT02065986 . Registered 19 February 2014 (retrospectively registered).

Intimate partner sexual violence (IPSV) is a significant aspect of intimate partner violence (IPV). While intimate partners commit one third of sexual assaults, IPSV is often overlooked in studies about IPV and in research on sexual violence. There are difficulties identifying, defining, and measuring IPSV, and research lacks consistency in terminology and measurement. The purpose of this article is to review the terms, definitions, and measurements associated with IPSV. Academic journals and nonscholarly documents from the United States were searched for articles and reports associated with the study of sexual violence and IPV. Forty-nine documents met the criteria for inclusion. A four-part taxonomy defining IPSV was developed, which included IPSV, intimate partner sexual coercion, intimate partner sexual abuse, and intimate partner forced sexual activity. The average weighted prevalence rates of these various forms of IPSV were calculated across included research studies. However, the measurements generally used to assess IPV do not adequately measure IPSV. Future research should consist terms to ensure consistent conceptualization and measurement of IPSV and to inform practice with survivors.

Background Intimate partner violence (IPV) is recognised as an important public health and social problem, with far reaching consequences for women’s physical and emotional health and social well-being. Furthermore, controlling behaviour by a partner has a similar impact on women’s well-being, yet little is known about the prevalence of this type of behaviour and other related abuses in Tanzania and in other sub-Saharan African countries. Methods We conducted a cross-sectional study to determine the lifetime and past 12-month prevalence of physical and sexual IPV, economic abuse, emotional abuse and controlling behaviour among ever-partnered women in Mwanza, Tanzania. Women ( N  = 1049) were enrolled in an ongoing trial (Maisha study) to assess the impact of microfinance combined with gender training on participants’ experience IPV, and other related outcomes. Interviews were conducted by same sex interviewers to collect information about socio-demographic characteristics, experiences of specific acts of IPV and abuse, and symptoms of poor mental health status. Results Overall, about 61% of women reported ever experiencing physical and/or sexual IPV (95% CI: 58–64%) and 27% (95% CI: 24–29%) experienced it in the past 12 months. Partner controlling behaviour was the most prevalent type of abuse with 82% experiencing it in their lifetime and 63% during the past 12 months. Other types of abuses were also common, with 34% of women reporting economic abuse and 39% reporting emotional abuse during the past 12 months. The prevalence of IPV and abuses varied by socio-demographic characteristics, showing much higher prevalence rates among younger women, women with young partners and less educated women. After we adjusted for age and socio-economic status, physical violence (OR = 1.8; 95% CI: 1.3–2.7) and sexual violence (OR = 2.8; 95% CI: 1.9–4.1) were associated with increased reporting of symptoms of poor mental health. Similarly, experience of abuse during the past 12 months was associated with increased reporting of symptoms of poor mental health. Conclusions The high prevalence of IPV and abuses and its strong links with symptoms of poor mental health underline the urgent need for developing and testing appropriate interventions in settings like Tanzania to tackle both violence and abusive behaviours among intimate partners. Trial registration ClinicalTrials.gov – ID NCT02592252 , registered retrospectively on 13 August 2015.

In the nationally representative General Social Survey, U.S. Adults ( N  = 33,380) in 2000–2012 (vs. the 1970s and 1980s) had more sexual partners, were more likely to have had sex with a casual date or pickup or an acquaintance, and were more accepting of most non-marital sex (premarital sex, teen sex, and same-sex sexual activity, but not extramarital sex). The percentage who believed premarital sex among adults was “not wrong at all” was 29 % in the early 1970s, 42 % in the 1980s and 1990s, 49 % in the 2000s, and 58 % between 2010 and 2012. Mixed effects (hierarchical linear modeling) analyses separating time period, generation/birth cohort, and age showed that the trend toward greater sexual permissiveness was primarily due to generation. Acceptance of non-marital sex rose steadily between the G.I. generation (born 1901–1924) and Boomers (born 1946–1964), dipped slightly among early Generation X’ers (born 1965–1981), and then rose so that Millennials (also known as Gen Y or Generation Me, born 1982–1999) were the most accepting of non-marital sex. Number of sexual partners increased steadily between the G.I.s and 1960s-born GenX’ers and then dipped among Millennials to return to Boomer levels. The largest changes appeared among White men, with few changes among Black Americans. The results were discussed in the context of growing cultural individualism and rejection of traditional social rules in the U.S.

Orgasms have been promoted as symbols of sexual fulfillment for women, and have perhaps become the symbol of a woman's healthy sex life. However, some research has suggested that this focus on women's orgasms, though ostensibly for women, may actually serve men; but the mechanisms of this are unclear. In the present experiment, we hypothesized that women's orgasms specifically function as a masculinity achievement for men. To test this, we randomly assigned 810 men (M age = 25.44, SD = 8.31) to read a vignette where they imagined that an attractive woman either did or did not orgasm during a sexual encounter with them. Participants then rated their sexual esteem and the extent to which they would feel masculine after experiencing the given situation. Our results showed that men felt more masculine and reported higher sexual esteem when they imagined that a woman orgasmed during sexual encounters with them, and that this effect was exacerbated for men with high masculine gender role stress. These results suggest that women's orgasms do function-at least in part-as a masculinity achievement for men.

Despite calls to engage men in HIV and intimate partner violence (IPV) prevention efforts, effective approaches to reach and engage men in low-resource, high-HIV prevalence settings are limited. We identified and engaged social networks of mostly young men in a study designed to evaluate the efficacy of a combined microfinance and peer health leadership intervention to prevent HIV and IPV. We conducted a cluster-randomized trial among 60 social networks locally referred to as \"camps\" within Dar es Salaam, Tanzania. Camps were randomly assigned (1:1) to a microfinance and peer health leadership intervention or a control condition that received a brief delayed intervention after the study's conclusion. Allocation was not masked to participants or researchers. Behavioral assessments were conducted at baseline and 30-months post-intervention launch, with biological samples drawn at 30-months to test for sexually-transmitted infections (STIs). Primary outcomes included prevalence of STIs and past-year IPV perpetration. Secondary outcomes included STI sexual risk behaviors and past-year HIV testing. Proximal intervention targets included inequitable gender norm attitudes and hope. A modified Poisson regression approach was used to estimate intention-to-treat intervention effects on outcomes assessed at the 30-month follow-up. We enrolled 1,258 men within 60 camps. Of these men, 1,029 (81.8%) completed the 30-month follow-up. There were no differences by condition in STI prevalence, IPV perpetration, or sexual risk behaviors at the 30-month follow-up. Intervention participants reported greater levels of past-year HIV testing, controlling for baseline testing (aRR 1.13 95% CI 1.005-1.28). They also reported significantly lower levels of inequitable gender norm attitudes (adjusted effect -0.11, 95% CI -0.21-0.003). We successfully engaged and retained social networks of men in this multilevel intervention study. While we did not see an effect on the primary outcomes, our intervention successfully improved HIV testing and reduced inequitable gender norm attitudes.

The biological mechanisms underlying long-term partner bonds in humans are unclear. The evolutionarily conserved neuropeptide oxytocin (OXT) is associated with the formation of partner bonds in some species via interactions with brain dopamine reward systems. However, whether it plays a similar role in humans has as yet not been established. Here, we report the results of a discovery and a replication study, each involving a double-blind, placebo-controlled, within-subject, pharmaco-functional MRI experiment with 20 heterosexual pair-bonded male volunteers. In both experiments, intranasal OXT treatment (24 IU) made subjects perceive their female partner's face as more attractive compared with unfamiliar women but had no effect on the attractiveness of other familiar women. This enhanced positive partner bias was paralleled by an increased response to partner stimuli compared with unfamiliar women in brain reward regions including the ventral tegmental area and the nucleus accumbens (NAcc). In the left NAcc, OXT even augmented the neural response to the partner compared with a familiar woman, indicating that this finding is partner-bond specific rather than due to familiarity. Taken together, our results suggest that OXT could contribute to romantic bonds in men by enhancing their partner's attractiveness and reward value compared with other women.

Background Risky sexual behavior (RSB) is one of the major youth sexual and reproductive health problems globally, including in Ethiopia. RSB among youth increases the risk of HIV infection, other sexually transmitted infections (STIs), unintended pregnancy, and unsafe abortion. Therefore, the aim of this study was to examine RSB and its associated factors among university students in Ethiopia. Methods A cross-sectional study was employed in six randomly selected public universities in Ethiopia from August 2021 to February 2022. A stratified two-stage sampling technique was applied to reach the required number of study participants, and a structured self-administered questionnaire was used. RSB was defined as having had sexual relationships with more than one partner and using condoms with a new sexual partner irregularly or not at all in the last 12 months. Bivariable and multivariable logistic regression analyses were used to identify factors associated with RSB among those participants who were sexually active. Results The prevalence of RSB among those who had had sexual intercourse in the last 12 months ( n  = 523) was 19.5% ( n  = 102). One hundred forty-four (29.9%) students had multiple sexual partners, and 325 (69.3%) students did not always use condoms with a new sexual partner. Adjusted odds ratios (AOR) showed that those students aged 21–24 years had lower odds of RSB than those aged above 25 years AOR 0.18 (95% CI 0.03–0.98). The adjusted odds of RSB were 6.7 times higher (95% CI 1.26–35.30) among students who started sex at the age of 10–17 years than those who started sex at 21 years and above and 3.9 times higher (95% CI 1.33–11.39) among students who had experienced emotional violence. Conclusion RSB continues to be a problem among university students in Ethiopia. Those students who started sex at an early age and those who experienced emotional violence were more likely to engage in RSB. Therefore, universities in Ethiopia should implement strategies such as RSB targeted health education programs that consider early sexual debut, experiences of emotional violence, and safe sexual practices.

Background The World Health Organisation estimates that worldwide six percent of women aged 15–49 have experienced non-partner sexual violence (NPSV) in their lifetimes. A similar prevalence is found in sub-Saharan Africa. This form of violence is comparatively under-researched, leading to a dearth of knowledge around potential risk factors for male perpetration of NPSV. Methods We sought to explore key risk factors for perpetration of non-partner rape, verbal and physical sexual harassment in young Tanzanian men by conducting a cross-sectional survey of 1002 young men aged 18 to 24 living in Mwanza, Tanzania between June 2021 and March 2022. We conducted unadjusted logistic regression for bivariate associations between all three forms of NPSV and risk factors at the sociodemographic, behavioural, and mental health and substance misuse level. The risk factors independently associated with the outcomes were included in three separate multivariable logistic regression models. We then used dominance analysis to determine which factors had the strongest association with all three forms of NPSV perpetration. Results Among the young men in our sample, 9% reported having perpetrated non-partner rape ( n  = 86), 19% having physically harassed a woman ( n  = 188) and 33% having verbally harassed a woman ( n  = 330). After adjustment for the other risk factors in the model, pornography consumption, having multiple sexual partners, gambling, and depressive symptoms remained significantly associated with more than one form of NPSV. Conclusions The widespread nature of sexual harassment and rape perpetration among young men in our study and the associated risk factors, which are all tied to notions of masculinity encouraging domination, promiscuity, and risky health behaviours, call for harmful gender norms to be addressed to reduce the incidence of NPSV.