Don't Ignore That Selfish Interests Deny 55 Years of Research on the problems of offspring of older fathers and maternal grandfathers

The 20s to early 30s are the years to aim for to father babies for their welfare. Financial security does not buy health or happiness for your children.

Dr. Harry Fisch says fertility doctors are ignoring a growing body of scientific evidence, including two large studies that have found an association between older paternal age and an increased incidence of schizophrenia in children. One, done by the New York State Psychiatric Institute, found a doubling of schizophrenia in children of fathers who were aged 45 to 49 and a tripling of the rate in children whose fathers were over 50; the mother's age had no effect.

Fisch and others analyzed thousands of births in a New York state study that found older fathers added to the risk of Down syndrome in children if the mothers were over 35, and concluded the father's age was a factor in 50 percent of the Down syndrome babies born to women over 40. In younger women, the study found, the father's age had no effect.

http://www.4-men.org/sperm/fatherhood-late-in-life.html