Dementia (meaning "deprived of mind") is the progressive decline in cognitive function due to damage or disease in the body beyond what might be expected from normal aging. It is suspected that the spread of amyloid protein plaques (a plaque consisting of tangles of amyloid protein in nervous tissue) together with the tangles of nerve fibers in the brain is the cause of dementia. Professor Murali Doraisamy of Duke Unviversity in North Carolina have found evidences that people who eat curry regularly (about 2 to 3 times a week) are less likely to develop dementia. Evidences showed that curcumin (from turmeric which is the main spice for curry) is likely to be the active ingredient. Curcumin binds to the plaques and dissolves them.
Clinical trial is now being conducted to test curcumin's effects on Alzheimer's patients at the University of California.
Source: Weekly curry 'may fight dementia'