A man’s fertility generally declines or even disappears after the age of 60, but the fertility of individual men varies considerably, and there are even occasional cases of men around the age of 80 giving birth.
As men age, generally after 60 years of age, the body function declines significantly, coupled with inflammation, diet, environmental impact, testosterone levels decrease, epididymal fluid secretion decreases, sperm lack of nutrients, which will affect the maturation of sperm, men’s spermatogenesis will be weakened, so that the woman’s chances of conception are also gradually reduced.
There are also a very small number of men, maintenance is better, usually better physical quality, but also often exercise, to the age of 80 years old or so there is a possibility that sperm may also continue to produce, will lead to the phenomenon of female pregnancy.
Fertility generally declines after the age of 60 or so, and you can consult the relevant medical professionals for details.