Can a man at the age of 45-55 still make a woman pregnant?
Increased male age is associated with a decline in semen volume, sperm motility, and sperm morphology. However, male fertility declines more slowly than that of women, and a man between the ages of 45 and 55 would be able to make a woman pregnant. Impairment of spermatogenesis (making of sperm) is a continuous process occurring over decades, and only about 50 % of men in their eighties show complete loss of fertility.