The same healthy habits that boost your overall brain function can also help ward off Alzheimer’s disease. That means engaging in regular physical and mental exercise, and making sure your diet includes lots of leafy greens and foods rich in omega-3s (like nuts and fish). I’d also suggest eating more curry, because it contains the spice turmeric. Research shows that turmeric may help prevent the accumulation of plaques that build up in the brains of Alzheimer’s patients and that can interfere with communication between neurons.
Source: Mehmet Oz, MD, oprah.com