Sexual activity is one of the most common and simplest of human functions. The sexual mindset for men and women, once they have consented, is to have sex unencumbered and free. However, given the realities of unwanted pregnancies and sexually transmitted diseases (including the AIDS virus), couples—especially non-monogamous ones—need protection.
aCondax LLC, New York, NY, NIMH Fellow, Harvard University
bFeinstein Institute for Medical Research, North Shore–LIJ Health System, Manhasset, NY