Researchers have now found proof that men have less sex after they become a father for the first time.
A new study has found that older men whose testosterone levels were neither low nor high tended to live longer.
Scientists have found that large portions of the X chromosome -long perceived as the "female" counterpart to the male-associated Y chromosome - have evolved to play a specialized role in production of sperm.
A hormonal gel combo applied daily to skin showed promise as a male contraceptive by reducing sperm production.
Scientists in China have found that a naturally-occurring ingredient of soy beans.
Day in Pics: 23rd November
Showbiz World - November 23, 2014
Los Angeles Auto Show