Health Report: Jan. 10, 1994

THE GOOD NEWS

-- A physical mechanism linking heart attacks and stress may have been found, a discovery that could ultimately help prevent heart attacks. Mental stress seems to make blood platelets release the chemical atp into the bloodstream, and atp produces blood clots, a major cause of heart attacks.

-- First "good" cholesterol, now "good" fat. A type of body fat has been found that, paradoxically, protects against obesity. Mice bred to have a deficit of "brown fat" gain a great deal of weight very quickly when fed a normal diet. Researchers believe that the brown fat, which is also...

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