Plastic surgery may mask the face of it, but we all grow old. That, besides death, is a certainty of life. We grow old, the master templates and controls that coordinate the replication of cells and their divisions begins to fail - sometimes this means cancer, other times it means something as mundane and ordinary as age spots, wrinkles, grey hairs, no hair, too much hair or inefficient functioning of our organs.

This is a fact of life. Father Time ticks for both men and women. We all have to listen to our biological clocks. Hair dye and plastic surgery can only superficially cover up the process.

In America and many other countries, the biological clock has essentially been made a woman's problem, a thing that drives women to marry in haste or become too old for marriage. It is a source of anxiety for mothers and daughters, career women and divorced women. Yet Father Time waits for no man (or woman).

If you just took a second and looked at a man's skin cells, at his hair or lack of, or checked the health of his vital organs, the thought that a forty-something's sperms might be less worthy than the ones he produced during his sexual peak (late teens) would seem logical.

And now scientists have finally shown that good old dads may be responsible for mental problems such as autism. Maybe it isn't all mom's fault. Besides autism, schizophrenia, as Senior Journal.com notes, has been linked to older fathers:

Men aged 45 to 49 were twice as likely to have children with schizophrenia as men under the age of 25 who became fathers, while the risk tripled for men over the age of 50, according to an analysis of a large population of over 85,000 people by researchers from New York University School of Medicine, Columbia University College of Physicians & Surgeons, and Israel's Ministry of Health.