The effect of mental stress on the human heart is still a puzzle to doctors. So is the role of cholesterol in clogging the coronary arteries. Last week medical researchers learned that they may not be able to solve one puzzle without also solving the other. Emotions, reported Dr.
Stewart Wolf and colleagues at the Oklahoma Medical Research Foundation, have a measurable effect on the cholesterol level in the blood.
For months, the Oklahoma researchers kept their subjects in a hospital and carefully restricted them to a controlled diet.
The doctors wanted to be sure that when cholesterol levels varied, varying foods were not...
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