Ever wonder why, on average, women live five to 10 years longer than men? This week's Time magazine features an interview with Tom Perls, founder of the New England Centenarian Study at Boston University (and creator of the Web site Livingto100.com). He gives several possible reasons:
First, women tend to develop cardiovascular diseases like heart attack and stroke about 10 years later than men. (Women are particularly vulnerable starting around their 70s or 80s, compared with 50s or 60s for men.) Researchers used to think this was because of estrogen, but now there are a couple of alternative theories. One is that women tend to have lower levels of iron in their blood than …






