Given the bind that many prominent American men have thrust themselves into — think Tiger Woods, Mark Sanford, Eliot Spitzer, et al. — it seems it really is possible to have too much of a good thing. And your prostate gland appears to agree.
Senh: Don't do it too much when you're in your 20-30's. Twenty or more in a month is considered too much. But once you hit your 40's, go wild, it's good for your prostates.