Secret to aging well is exercise and diet

What does exercise have to do with your brain? Clinical research shows dementia appears to be caused by elevated levels of blood glucose, and some researchers are saying Alzheimer's may be a form of diabetes. When you exercise, you bring down the level of glucose in your blood.

Dr. Eric R. Braverman, a New York City-based internal medicine physician says no one can get enough exercise. He also recommends a diet loaded with fresh produce, antioxidants, herbal teas and at least 7 teaspoons of spices such as cinnamon, fennel, rosemary and turmeric.

"The brain is the most important organ in the body, and you're always eating for that," he says. "You can never get enough nutrients. You can never exercise enough or get enough fresh air. Our society is toxic; zinc and antioxidants are the anecdotes for toxins."