Just the attempt to learn a [new] language is like running different software through the brain.

We need to accept the seemingly obvious fact that a toxic environment can make people sick and that no amount of medical intervention can protect us. The health care community must become a powerful political lobby for environmental policy and legislation.

Human bodies are designed for regular physical activity. The sedentary nature of much of modern life probably plays a significant role in the epidemic incidence of depression today. Many studies show that depressed patients who stick to a regimen of aerobic exercise improve as much as those treated with medication.

When people are told to "eat many small meals," what they may actually hear is "eat all the time," making them likely to respond with some degree of compulsive overeating. It's no coincidence, I think, that obesity rates began rising rapidly in the 1980s more or less in tandem with this widespread endorsement of more frequent meals.

Most American diets, even bad ones, provide more than enough calcium for bone health, especially for men.

I think integrative medicine, something I've pioneered, is the way of the future. Its great promise is that it can reduce healthcare costs by shifting the whole focus of healthcare away from disease management to health promotion and prevention. They can do that two ways: first, by focusing attention on lifestyle medicine, which is very deficient. And second, by bringing into the mainstream treatments that are lower cost because they are not dependent on expensive technology.

As a physician, I recommend nutritious hemp seeds and oil to anyone interested in maintaining a healthy diet. Everyone will benefit when American farmers can grow this amazing crop once again.