Health Report: Sep. 12, 1994

THE GOOD NEWS

-- The cause of Alzheimer's disease is still unknown, but new research points to excess zinc as a possible explanation for physical changes found in victims' brains.

-- A new blood test can tell whether patients with chest pain but a normal electrocardiogram are in fact having a heart attack; such people usually go into intensive care as a precaution, but over 70% don't belong there.

-- About 10% of those who get melanoma, the skin cancer that kills some 7,000 Americans each year, have an inherited weakness for the disease. Now the guilty gene has been found;...

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