Results tagged “antioxidants” from 60 Second Science

Despite the fact that there are millions of people around the world suffering from it, HIV is actually surprisingly hard to transmit. Each time a man has unprotected sex with an HIV-positive man, his risk of becoming infected is only 82 in 10,000, and the risk is even lower for heterosexual sex: a woman only has a 9 in 10,000 chance of contracting the virus from an HIV-positive male during an unprotected sexual encounter. Researchers have long wondered why this is, and whether our bodies have some kind of preliminary line of defense against the virus.

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