Keep your brain healthy with these foods that can slow down—or perhaps even help prevent—the disease.

Keep Your Brain Healthy

The best thing you can do to keep your brain working the way you want it to: exercise, and eat right. “Nutrition is very, very important to brain health,” says Paul Nussbaum, Ph.D., a clinical neuropsychologist and member of scientific advisory board for the Alzheimer’s Foundation of America. “Surprisingly, the brain is made up of 60% fat—it’s the fattest part of our body—and that fat insulates the nerve tracks. Without that fat we slow down mentally,” Dr. Nussbaum says.