More isn't necessarily better when prescribing the two drugs commonly used to treat patients who are in danger of having a heart attack, Plavix (clopidogrel) and aspirin, a new study suggests.

Two reports on the data find that high doses of Plavix are good for some patients, but not all, while high-dose aspirin is no better than a low dose for preventing new heart attacks, other cardiac problems, stroke and death.

A new study is linking the popular weight loss drug Meridia to an increased risk of non-fatal heart attacks and stroke, although taking the drug did not seem to up the risk of death in patients with a history of heart problems.

The finding is stirring mixed reactions from experts.

Reading, crossword puzzles and other mentally stimulating activities have pros and cons when it comes to Alzheimer's disease, new research suggests.

In line with prior research, the study finds that such mental activity may slow declines in thinking and memory during normal old age.

Even after escaping a violent or controlling relationship, a mother's mental health may continue to decline, a new study finds.

Ohio State University researchers analyzed data from 2,400 women who were married to, or living with, the father of their child at the end of the first year of a three-year period. The women were divided into three groups: those who experienced no abuse, those in physically violent relationships, and those in controlling relationships where their partners were extremely critical and insulting and tried to control the woman's actions.

Overactive blood platelets could trigger inflammation in those with lupus, but the anti-clotting drug Plavix might ease the painful symptoms of this autoimmune disease, a new study suggests.

Platelets, which are the colorless, disc-shaped blood cells that are key to clotting, are suspected to be involved in lupus, explained senior study author Dr. Patrick Blanco, of the University of Bordeaux in France, but "their precise role was poorly understood until now."