Huge study links older dads with kids' psych woes
Compared with kids of the youngest dads, those fathered by men at age 45 and older faced risks almost 25 times greater for bipolar disorder; 13 times greater for ADHD; more than three times greater for autism; almost three times greater for suicide attempts; and about two times greater for schizophrenia and substance abuse.They speculate a lot about mutations in sperm, but I'm skeptical of that.
Older fathers probably have higher incidence and more severe chronic illnesses that they transmit to their children.
The most obvious way to test my infection hypothesis is to see if there is a difference between present vs. absent fathers.