Researchers studying more than 100 families linked to autism from the Middle East, Turkey and Pakistan said they had identified at least six new genes that may provide families new hope for future treatment.

The finding, published in the July 11 issue of Science, shows that autism is not only caused by the deletion of some genes but also by turning off other genes. These genes cause disruptions in the brain's ability to form new connections in response to experience

Diabetes and obesity can affect male fertility in a negative way, new research has found. The findings, presented Wednesday at the European Society of Human Reproduction and Embryology conference here, could mean that men need to keep tabs on their weight when planning a family.

Researchers from the University of Aberdeen found that men of average weight have healthier sperm in higher volumes than those outside the normal range. The research follows reports made by doctors earlier this week that male fertility begins to decline when men reach their mid-30s

Women receiving kidneys from males donors are at a higher risk of organ rejection than those who received one from another woman, a new Swiss study says. Researchers now recommend that the gender of patients and donors should be considered in future operations to avoid such problems.

Researchers at University Hospital Basel analyzed data on 195,516 people in Europe who received kidneys from deceased donors between 1985 and 2004, and found that gender can substantially affect whether the operation will be successful

A transgender man who surprised the world in April by revealing he was pregnant gave birth Sunday to a baby girl at a hospital here.

Thomas Beatie, 34, who switched gender from woman to man, delivered his baby at the St. Charles Medical Center. He gave birth naturally. The father has already left the hospital with his baby, who was conceived through artificial insemination using sperm from a donor

Four million Canadians do not have a regular physician, indicating the acute lack of doctors in the country.

The Canada Community Health Survey of Statistics Canada released Wednesday said 86 percent of those born in Canada or have been in the country for at least 5 years have a regular doctor who oversees their medical needs, while only 65 percent of recent immigrants have one