BACKGROUND Human immunodeficiency virus (HIV) has rapidly spread among men who have sex with men (MSM) in China in recent years; the magnitude of the epidemic is unclear. We sought to test 3 hypotheses: (1) The prevalence of both HIV and syphilis among MSM in China is high, (2) the 2 epidemics each have unique geographical distributions, and (3) demographic and sexual behavior characteristics a...

BACKGROUND Poor HIV testing uptake by MSM may be attributable to unique challenges that are localized in Southeast Asia. OBJECTIVE To characterize MSM who never tested for HIV, to identify correlates of never testing, and to elucidate the perceived barriers to HIV testing. METHODS The present study used data from the Asian Internet MSM Sex Survey (AIMSS) and restricted the analysis to 4,310...

BACKGROUND Men who have sex with men (MSM) are more likely to be living with HIV than other adult men in low- and middle-income countries. MSM experience barriers to accessing HIV services including a lack of available specialized care, and community-level stigma and discrimination. This study aims to examine the uptake of HIV services at non-governmental and community-based organizations (NGOs...

BACKGROUND Men who have sex with men (MSM) are much more likely to be infected with HIV than the general population. China has a sizable population of MSM, including gay, bisexual men, money boys and some rural workers. So reducing HIV infection in this population is an important component of the national HIV/AIDS prevention and control program. METHODS We develop a mathematical model using a...

This qualitative study investigates the different methods for selecting sex partners by Korean homosexuals considering factors related to homosexual identity and sexual behavior. We take the approach of the grounded theory to examine the issue of sexual partnering of men who have sex with men (MSM). In-depth interviews of urban MSM and bisexual men were conducted. The snowball sampled through a...

BACKGROUND Although there are limited numbers of incidence and persistence estimates for anal human papillomavirus (HPV) in women and in men who have sex with men (MSM), there are no such reports for men who have sex with women (MSW). METHODS Genotyping was performed on anal samples from men, aged 18-70, from São Paulo, Brazil; Cuernavaca, Mexico; and Tampa, Florida, who provided specimens at...

Men who have sex with men (MSM) may be more likely to smoke than general population men. Such population comparisons typically do not control for demographic differences and have not tested reasons for MSMs' greater tobacco use. We compared MSM with general population men in data that allowed us to control demographic differences, and hypothesized that MSM would report more tobacco use, due to ...

Little is known about the impact of combination HIV prevention interventions for men who have sex with men (MSM) and the impacts on the wider epidemics. Modelling analyses of MSM-specific interventions across varied HIV epidemics may inform evidence-based responses. The Goals model was adapted to project the impacts of providing HIV interventions for MSM and access to expanded coverage of antir...

The authors say male-to-male sexual contact, even if not recent, is an “important marker” for being at high risk for HIV. With MSM-Ever, overall HIV prevalence was 9.1%, compared to only 0.2% among men with no history of sexual contact with other males. HIV was detected among 16.5% of MSM-Ever who identified as gay, a rate roughly four times higher than found with bisexual MSM-Ever. No HIV infe...

Breast cancer is the most aggressive form of all cancers, with high incidence and mortality rates. The purpose of the present study was to investigate the molecular mechanism by which methylsulfonylmethane (MSM) inhibits breast cancer growth in mice xenografts. MSM is an organic sulfur-containing natural compound without any toxicity. In this study, we demonstrated that MSM substantially decrea...