Sugar in excess is a toxin, unrelated to its calories. The dose determines the poison. Like alcohol, a little sugar is fine, but a lot is not. And the food industry has put us way over our limit.

It's true that a few foods, such as grapefruit and celery, contain fewer calories than it takes to digest them. So, when you eat these foods, you actually burn more calories than you take in. Thus, the term "negative-calorie foods."

There's been a lot of buzz recently about a new study that punched a few new holes in the already-tattered notion that weight gain and loss is simply a matter of "calories in vs. calories out."

If you're trying to lose weight, a new study shows it doesn't really matter what you cut out of your diet as long as you're cutting something. The ...

At one time or another, we've all been promised this: "If the amount of calories we eat is less than the amount of calories our bodies use, we will lose weight." I'm sorry to say that this promise is false.

And we are all governed by the prevailing laws of physics that relate matter and energy. Calories are a measure of energy, and matter cannot be created without energy input.