Sure, a big penis might be nice to stroke or gaze at longingly. Products and services. Though not commonly classified as an STI, giardiasis can be transmitted between gay men, [52] and it can be responsible for severe weight loss and death for individuals who have compromised immune systems, especially HIV. A study reported that two large population surveys found "the majority of gay men had similar numbers of unprotected sexual partners annually as straight men and women. However, the risk for invasive anal squamous carcinoma, which is believed to be caused by certain types of sexually transmitted human papilloma viruses, notably type 16, was significantly fold elevated at a crude incidence of Medical Journal of Australia. Retrieved April 7, It's incredibly romantic being with someone of the same sex, someone who so closely understands your body.