obesity and poor diet are bigger problems. they lead to hypertension, diabetes, and increased risk of strokes and microstrokes, all of which affect brain function. when small put individuals on a mediterranean diet low in animal fats and low in processed sugar, and had them eat five small meals a day, drink lots of water, and engage in aerobic physical exercise, memory training, and stress-reduction techniques, he witnessed noticeable improvements in health and memory within two weeks. he believes that proper nutrition is an important tactic for avoiding alzheimer’s disease: “the food we eat does make a difference.”