Andrew Weil Md

No one's health is improved by swapping out natural saturated or monounsaturated fats for skim milk, sugars or processed grains. So if you encounter misbegotten products such as fat-free half-and-half, do what I do -- leave them on the shelf.

Gasoline is expensive, money is tight, and obesity in America is at record levels -- three good reasons to make the spring of 2012 the time to get serious about walking.

Hormesis is a little-known term with huge implications. It refers to a fascinating phenomenon: a favorable biological reaction to low doses of chemical toxins, radiation or some other form of stress that is damaging, even fatal, in higher doses.