Drinking coffee regularly can reduce the risk of Alzheimer's

Drinking coffee regularly can reduce the risk of Alzheimer’s by keeping caffeine levels in the blood topped up, new research shows.
Scientists who tracked elderly patients over a four year period found those with the highest levels of the stimulant in their bloodstream at the start of the study were less likely to suffer the brain-wasting disease. Volunteers who remained healthy had twice as much caffeine circulating in their systems as those who progressed to the early stages of dementia, according to researchers at the University of South Florida.
The findings, published in the Journal of Alzheimer’s Disease, support previous studies which showed drinking three cups of a coffee a day can significantly reduce the risk of the incurable illness. Researchers think caffeine may work by triggering a chain reaction in the brain that prevents the damage done by Alzheimer’s.

Source  - Daily Mail