No evidence drugs, vitamins, supplements help prevent cognitive decline in healthy older adults

... evidence that herbal supplements such as gingko improved cognitive functions or vitamins and fatty acids such as vitamin B6 or omega-3 fatty acids. The strongest evidence was for the value of mental exercises such as computerized training programs ...

http://www.sciencedaily.com/releases/2013/04/130415151439.htm?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+sciencedaily%2Fhealth_medicine%2Fdiseases_and_conditions+%28ScienceDaily%3A+Health+%26+Medicine+News+--+Diseases+and+Conditions%29