Estrogen seems to reduce the risk of Alzheimer's and may even improve cognitive function in women who already have it. Drug manufacturer Wyeth and the U.S. government are each funding multi-million dollar trials to see it estrogen can help prevent memory loss in women. So far, there has been no word on whether estrogen has any benefit for men. Nicotine also seems to be helpful in the fight against this insidious disease. Because smokers are less likely to get Alzheimer's, nicotine patches are being tested in some Alzheimer's patients.
Nicotine enhances brain cell activity and improves cognitive function.
It may also help prevent the formation of plaques. It should be noted that all this is very preliminary, and much more research is needed on such possible treatments.