The bottom line is that the human body is complex and subtle, and oversimplifying - as common sense sometimes impels us to do - can be hazardous to your health.

Citizens must pressure the American Hospital Association, the American Public Health Association, the Centers for Disease Control and other relevant governmental agencies to make greening our hospitals and medical centers a top priority so that they themselves don't create even more illness.

Short naps are good. Given modern workplace demands, this is not possible for many people - but if you have the option, try napping for ten to twenty minutes in the afternoon, preferably lying down in a darkened room.

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

I think it's worth trying to do something about obvious sources of stress in your life. But even more important is learning and practicing methods to neutralize the harmful effects of stress on the body and mind. There are many possibilities, anything from meditation and yoga to listening to relaxing music. My personal favorite is simple breathing techniques - they're very effective, take very little time, and they're free.

In my view, the best gift is one that benefits both the receiver and the planet.

It does kids no favors, and sets them up for a potential lifetime of poor health and social embarrassment, to excuse them from family meals of real food. Everyone benefits from healthy eating, but it is particularly crucial at the beginning of life.