A Newcastle University study involving thousands of families is helping prospective parents work out whether they are likely to have sons or daughters. The work by Corry Gellatly, a research scientist at the university, has shown that men inherit a tendency to have more sons or more daughters from their parents. This means that a man with many brothers is more likely to have sons, while a man with many sisters is more likely to have daughters. The research involved a study of family trees containing information on , people from North America and Europe going back to

Is Your Semen Volume Normal? Here's How to Tell.



Are men born with sperm? | Go Ask Alice!
Skip to content. Me and a guy were having a discussion in reference to puberty. A question came up in the discussion: are males born with their sperm? We went to the Sex Education Dept. So the question is, are males born with sperm, like females are born with all of their eggs? Yes, men are born with sperm. But technically, they're not sperm


Using a Sperm Donor to Get Pregnant
Healthy sperm aren't always a given. Understand how lifestyle factors can affect your sperm and what you can do to improve your fertility. If you and your partner are planning a pregnancy, you might be wondering about the health of your sperm. Understand the factors that can affect male fertility — then consider steps to help your sperm achieve your goal. The male reproductive system makes, stores and moves sperm.



The male body holds many mysteries. Why are guys always scratching their balls? What exactly is a foreskin supposed to do?