Retrieving about 15 eggs from a woman's ovaries in a single cycle gives the best chance of having a baby through in-vitro fertilization (IVF), researchers reported on Wednesday.

Investigators led by Arri Coomarasamy of the University of Birmingham in central England looked at data from more than 400,000 IVF cycles in Britain between 1991 and 2008.

Babies who are breast-fed for several months develop fewer behavioral problems in early childhood than those who are bottle-fed, researchers have said.

The British study which involved around 10,000 mothers and their babies found that breastfeeding for at least four months lowered the risk of behavioral problems in children aged five by one third.

A young father who was terribly disfigured in an electrical accident showed off his new look alongside doctors who performed the United States' first full face transplant.

Visibly moved as he described how his young daughter called him "handsome" and how the first whiff of hospital food was so tantalizing, 26-year-old Dallas Wiens said there were no words to thank the anonymous donor and his family.

Her first pregnancy brought Dianna Fiore Radoslovich a break from the weakness and pain of her multiple sclerosis.

She put away her cane and her meds and gave birth to a healthy son.

Saudi authorities have rejected claims that holy Zamzam water from a spring inside the Grand Mosque complex of Mecca is polluted and stressed there were no health risks.

The Presidency of the Two Holy Mosques Affairs said in a statement Saturday it had no reports suggesting there was any issue with Zamzam water which was safe for drinking.

Chocolate milk has long been seen as the spoonful of sugar that makes the medicine go down, but the nation's childhood obesity epidemic has a growing number of people wondering whether that's wise.

With schools under increasing pressure to offer healthier food, the staple on children's cafeteria trays has come under attack over the very ingredient that made it so popular — sugar.

Afghanistan is the worst place in the world to be a mother and Norway is the best, an annual report released Tuesday said.

"Afghanistan has the highest lifetime risk of maternal mortality and the lowest female life expectancy in the world," putting it at the bottom of the Mothers' Index, which has been compiled for the past 12 years by the nonprofit group Save the Children.

Surgery appears to be a better treatment option for early prostate cancer than "watchful waiting," particularly for younger patients, according to a Swedish study published Thursday.

In the first clinical trial examining the impact of surgically removing the prostate gland, the team followed 347 randomly chosen patients for the procedure, and closely watched 348 others, according to the study in the New England Journal of Medicine.

A certain gene in some monkeys can help boost vaccine protection against simian immunodeficiency virus (SIV), a trait that could help researchers develop better AIDS vaccines for humans, suggested a study out Wednesday.

Researchers vaccinated a large group of rhesus monkeys and then exposed them to SIV repeatedly over the course of two weeks. Half became infected, but the other half did not.

The U.S. government said Tuesday it is taking steps to remove from the market a host of online products that promise to cure HIV, herpes, Chlamydia and other sexually transmitted diseases.

The products, mainly sold on the Internet but also available in some retail outlets, include names like Medavir, Herpaflor, Viruxo, C-Cure, and Never An Outbreak.