Circumcision Cuts AIDS Risk

[Vuk]

If you're flexible in your joints you can do autofellatio and autocunnilingus, which shouldn't give you any diseases you don't already have.

oh dear... I just looked those words up... More than I wanted to know...
And may I ask, what type of guy is going to...(you know...)

Well, IIRC(feel free to correct me, just trying to remember that) the immune system consists of 3 types of cells, which I will call A, B and C now since I do not remember the official names. The A cells are patrolling the body and destroy every strange thing they can find that should not be there, they are the first defense. The B type will search for similar things and especially for infected cells, however it will not do much itself except to "activate" the C type cells which are able to identify and destroy infected cells with the information they get from the B cells.
The HIV virus now infects the B cells and reproduces itself inside them, destroying them(that's what a virus does, only that other virii use other cells as hosts), this will basically render 2/3 of your immune system useless because the B cells are destroyed by the virus and the C cells will never be activated again by them. This leaves you with the A cells but those are no good in defeating a mass invasion of virii or bacteria and cannot do much against infected body cells. I think a flu for example can then end up lethal and kill you.
Now circumcision can only prevent fluids from staying around underneath the skin of your penis and get sucked up by your skin I think, maybe cleaning the penis with alcohol shortly after sex might work as well.

There are T cells, B cells, and helper T cells. HIV infects the helper T cells.

[Big King Sanctaphrax]

Immunology on the .Org?! I have a massive exam on this stuff tomorrow, let me be!

Speaking of oral sex and STDs, apparently it dramatically increases the risk for an extremely lethal form of oral cancer to have oral sex if the receiver has human papillomavirus (HPV), a virus which seems to be very much spread in western society today (but it isn't as lethal as HIV unless during oral sex, when it is transmitted to the oral cavity and causes cancer).

A tentative link between oral cancer and HPV has been established, but it has been established beyond a shadow of a doubt that it causes cervical cancer.

[Rodion Romanovich]

A tentative link between oral cancer and HPV has been established, but it has been established beyond a shadow of a doubt that it causes cervical cancer.

Interesting, then it's even worse than I thought!