Quality of sperm produced degrades quickly. I suspect few men are fertile enough to father children in old-age though your chances are probably better with a yo

Quality of sperm produced degrades quickly. I suspect few men are fertile enough to father children in old-age though your chances are probably better with a young woman(!). http://www.sciencedaily.com/releases/2003/02/030210080435.htm http://www.sciencedaily.com/releases/2003/02/030210080435.ht... is quite a good review based on a small sample size of men between 20 and 80 years.