The notion that a human being should be constantly happy is a uniquely modern, uniquely American, uniquely destructive idea.

Many exercise forms - aerobic, yoga, weights, walking and more - have been shown to benefit mood.

Any drug can be used successfully, no matter how bad it's reputation, and any drug can be abused, no matter how accepted it is. There are no good or bad rugs; there are only good and bad relationships with drugs.

If the only way you could read an email was to run a mile first, the urge would quickly die. Human beings constantly do subconscious effort/reward calculations. Tapping a screen is the easiest of physical tasks.

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.

Alternative models are neither right nor wrong, just more or less useful in allowing us to operate in the world and discover more and better options for solving problems.

Millions of Americans today are taking dietary supplements, practicing yoga and integrating other natural therapies into their lives. These are all preventive measures that will keep them out of the doctor's office and drive down the costs of treating serious problems like heart disease and diabetes.