In Focus:

Women's Hearts More Vulnerable to Stress

Mental stress can take a toll on blood vessels -- and women with heart disease may be especially vulnerable, a new study suggests.

Past research has found that compared with their male counterparts, women with heart disease are more likely to suffer "myocardial ischemia" in response to mental stress.

That refers to a reduction in blood flow to the heart, and it can raise the risk of potentially fatal heart complications.

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