Researchers at Stanford University, for example, found older father were linked to increased risks of low birth weight and seizures in newborns. Advanced paternal age is also associated with increased rates of various childhood cancers, as well as congenital cardiac defects.
It is worth remembering, however, that like many studies that examine associations between health and possible causes, the mechanisms are unclear. There could be other complicating factors that play a role, such as the lifestyle of parents and environmental pollution.