DEAR DOCTOR K: I've heard that certain common medicines used for other purposes may also protect against Alzheimer's disease. Is there any truth to this?
DEAR READER: You've raised an important question. Unfortunately, research has not so far provided a clear answer. HORMONE THERAPY. For years, doctors believed that hormone therapy might protect women from Alzheimer's disease. This therapy replaces the hormones that a woman no longer makes after menopause. The possibility that hormone therapy might offer protection was raised by studies which found that women who took estrogen were less likely to develop Alzheimer's than those who didn't.