Here's a little anecdote that shows how hard it is to get accurate data on risk. Just to keep things spicy, the "risk" involved is the likelihood of dying from a fatal heart attack during sex. It's more complicated than it seems.
We've known for some time that people do die of heart attacks during sex. Some of the more famous people in history, including politicians and popes, have gone that way. But how likely is such a fate outside of salacious rumors and saucy historical dramas aired on cable? The answer is more complicated than we might think.