The Male Biological Clock

Columbia University urologist Dr. Harry Fisch is one of the high-profile experts speaking out about the risks of geriatric fatherhood. He's appeared on the Today show and written a book called The Male Biological Clock, as well as an article in the medical journal Geriatrics. There he warns "couples are waiting longer to have children, and advances in reproductive technology are allowing older men and women to consider having children. The lack of appreciation among both medical professionals and the lay public for the reality of a male biological clock makes these trends worrisome."