I don't have a source, but I recall seeing a pop-sci news story claiming that men who have children at an older age have sons with higher than average life expe

I don't have a source, but I recall seeing a pop-sci news story claiming that men who have children at an older age have sons with higher than average life expectancy. IIRC they controlled for lifespan of the father, but I don't remember any word about controlling for fertility/sperm-count of the father in later years.