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Voter turnout for Democrats has hit historically low levels in this year's primary elections, an American University study shows.

People who "hook up" for casual sex can have as rewarding a long-term relationship as those who take it slowly and establish a meaningful connection ...

College students use a number of strategies to prevent their female friends from engaging in risky sexual behavior after a night of heavy drinking, ...

Final data from a new study showed that the diet drug Meridia increases the risk of heart attacks and strokes in patients who already have heart disease, but offered only moderate weight loss.

Even people with a strong genetic predisposition to obesity can offset their risk of being overweight by being physically active, according to a study published Tuesday in the journal PLoS Medicine .

More than half of babies in poverty are being raised by mothers who show symptoms of mild to severe depression, potentially creating problems in parenting and in child development, according to a new study.

Earthquakes strike along California's San Andreas Fault more often than scientists previously thought, and think it's more than likely a major quake could happen soon,  a new study suggests.

The moon is shrinking ever so slightly, but there is no cause for alarm, according to a new study that has discovered a clutch of previously unseen faults on the lunar surface from photos taken by a NASA probe.

A new study suggests that concussions and head trauma can cause degenerative diseases similar to A.L.S. and that Lou Gehrig may not have had Lou Gehrig’s disease.

A pair of studies suggests that the common painkiller acetaminophen -- better known as Tylenol in the U.S. -- may be fueling a worldwide increase in asthma.