India, Feb. 11 -- Doctors and scientists in the US have gathered over four decades of evidence that coffee could play a role in curbing cognitive decline, including among people who have a genetic predisposition towards dementia. After a 43-year study of around 130,000 people, 11,033 of whom developed the disease, a team based at Mass General Brigham and Harvard University concluded that "moderate consumption" of coffee and tea led to a "reduced dementia risk." Pointing to "reduced cognitive decline, and preserved cognitive function," the researchers said around two or three cups of caffeinated coffee or a cup or two of tea a day appeared to be the most effective amount. In a paper published by the American Medical Association, the team r...