A large study found that compared with children born to men between the ages of 20 and 24, children born to men over the age of 45 are 25 times more likely to develop bipolar disorder, 12 times more likely to develop attention disorders, 3 5 times more likely to develop autism, and 2 5 times more likely to engage in suicidal behavior or substance abuse
Most men who delay childbearing mature later psychologically
 The researchers concluded that men's delayed childbearing had a negative impact on the mental health of their children