A new study links cancer-causing mutations in certain genes to ethnicity. According to an article in the latest issue of the Journal of the American Medical Association, Hispanic women have greater chances to have a cancer-causing mutation than females of other racial or ethnic groups.

The study is a good guide for the medical community to use genetic testing to determine who has greater risks in developing breast cancer and help the involved women prevent it

Christmas season spells less incidents of suicide around the world, according to a new study conducted by a team of researchers from the University of Pennsylvania in the United States on Saturday.

The research team, headed by Dan Romer, the university's director of Annenberg Adolescent Communication Institute, further claimed that contrary to previous reports that suicide rates showed an upward trend during the "ber" months, the study revealed that it is lower by as much as 40 percent

Absenteeism associated with obesity costs $4.3 billion a year in the United States, a new study says.

The study suggests that obesity accounts for more than 9 percent of the total costs of work absenteeism

Teenagers who received sex education in school were less likely to have sexual intercourse before age 15, a new study says.

"Sex education seems to be working," said Trisha Mueller, an epidemiologist with the Centers for Disease Control and Prevention. "It seems to be especially effective for populations that are usually at high risk

The suicide rate among middle-aged Americans has reached a record-high in the past 25 years, a latest report by the United States government said.

The record-high 20 percent suicide rate among U.S. residents aged 45 to 54 has been reached between 1999 and 2004, ABC News said, quoting the U.S. Centers for Disease Control and Prevention