Mental illness often runs in families. Children are generally at a higher risk for a mental disorder if a parent has one. These patterns can show up very early in children's lives.

Viagra is known to boost men’s sexual vigor, but it can also treat a totally different type of condition in children: One small study says that the drug can diminish the size of a birth defect in kids.

A new study finds offspring from male cancer survivors face a slight increase in major congenital birth abnormalities compared to offspring from fathers with no history of cancer.