http://www.msnbc.msn.com/id/16227308/site/newsweek/
Ron Gray: In August of 2003, we launched a randomized trial of 5,000 uninfected Ugandan men between the ages of 15 and 49 who agreed to either receive information about HIV prevention and immediate circumcision, or get the information about HIV prevention and wait two years before receiving circumcision. Two years later, we followed up with them in order to determine the rates of HIV and other infections. An independent analysis of our data showed that the rate of HIV had been almost halved in the circumcised men compared to the uncircumcised men. The study was stopped this month because, of course, it would be unethical to deprive the men in the control group of the benefits of this procedure.
Personally, I'm a bit worried about advocating general circumcision in Africa because the practice itself can easily spread AIDS and/or lead to infections, because of the poor quality of medical facilities. As we all know, cutting leads to complications even here.What is it about circumcision that confers this protection?
We believe this happens in three ways. On the inner surface of foreskin, the mucosa, there is a very large number of immune cells that are targets of the HIV virus. During sex, it is unprotected. The external section of the foreskin and the shaft of the penis (exposed on an uncircumcised man during sex) is more protected because it is covered by a protein called keratin which provides a very effective barrier to HIV. Secondly, during intercourse, the foreskin can get traumatized and it can get breaches in it, allowing the virus to enter. A third factor is that the men who are circumcised are less likely to have genital ulcers, and genital ulcers increase the risk of HIV acquisition.
I had an interesting utilitarian argument with my parents over these results. I mentioned that condoms would, of course, be more effective than cutting off bits of people, and they responded that for cultural reasons, mass circumcision would probably be more palatable there than significantly increasing condom use (what sickens me is that I can imagine a mass-circumcision-in-Africa-initiative being more politically palatable HERE than a campaign to increase sex ed and condom use), and that obviously this would be the thing to do if subsequent studies showed that that will actually cut infection rates 50%. (For reference, my parents do not support routine circumcision in America. I am not cut.)
So, I was naturally curious to see what the population here thought of the study. I greet these with a lot of skepticism, but some points in the study's favor: it wasn't done by Americans, it was randomized rather than survey-based, and it was on a large scale.[/quote]