Comment: I believe that is part of the

(See in situ)

In reply to comment: not that you asked but... to (see in situ)

I believe that is part of the

I believe that is part of the explanation among some AIDS patients, but not in all. I knew too many who weren't drug addicts, but who were highly promiscuous in their practice of receptive and unprotected anal sex. Part of the problem could be chronic and high level anal exposure to semen from unhealthy men or men with poor diets and or drug use.