Mia Farrow suggests that son Ronan Farrow might be Frank Sinatra’s

[Xithras]

27. Indeed. I had a cousin born when my uncle was 69

His girlfriend (later wife, now widow) was 40 at the time.

Testosterone levels drop and things become less effective, but there is no male equivalent to menopause and men can father children right up until they die of old age.

Note that there's a difference between "possible" and "good idea". My cousin was only 7 years old when my uncle passed away. It's hard to explain to a little kid that his dad lived a "long life", when the kid got to spend so little of that life with him. The death of a parent is devastating to a child whether that parent is 26 or 76. When you have children at that age, you're all but guaranteeing that they're going to experience that kind of pain before they get into full adulthood.