Since 1975, Dr. Sanford Siegal has been helping his patients fight obesity and loose weight by eating cookies. These are no regular cookies. They are specially formulated cookies that are a part of the Dr. Siegal's Cookie Diet.

Madonna, Jennifer Aniston, Demi Moore and Cindy Crawford swear by the Zone Diet, not South Beach or Atkins Diet. The celebrities say they're experiencing enhanced health after they entered the Zone. What is the Zone Diet, and why are these famous stars so happy with it?

A chemical compound found in unpasteurised food has been detected in unusually high levels in the red blood cells of pregnant women with the condition pre-eclampsia.

New cookbook, called Raw Food Quick & Easy, makes nutritious raw food recipes easier and faster than ever.

"The five-alarm fire bell of a tooth ache is difficult to ignore," says Dr. Philippe P. Hujoel, professor of dental public health sciences at the University of Washington (UW) School of Dentistry in Seattle. Beyond the immediate distress, dental pain may portend future medical problems. It may be a warning that the high-glycemic diet that led to dental problems in the short term may, in the long term, lead to potentially serious chronic diseases.

A team of researchers at the University of Wisconsin-Madison, the Wisconsin National Primate Research Center and the William S. Middleton Memorial Veterans Hospital reports that a nutritious but reduced-calorie diet blunts aging and significantly delays the onset of such age-related disorders as cancer, diabetes, cardiovascular disease and brain atrophy.

Diets high in protein and cholesterol are associated with a higher risk of hospitalization or death due to cirrhosis or liver cancer, while diets high in carbohydrates are associated with a lower risk. These findings are in the July issue of Hepatology, a journal published by John Wiley & Sons on behalf of the American Association for the Study of Liver Diseases (AASLD).

A new review published in the Journal of Human Nutrition and Dietetics assessed whether certain modifications in diet have a beneficial effect on the prevention of prostate cancer. Results suggest that a diet low in fat and red meat and high in fruits and vegetables is beneficial in preventing and treating prostate cancer.

As people become more educated, studies have demonstrated that they tend to choose foods that are lower in calories but higher in nutrients. They also pay more.

We are being warned that Grapefruit Diets can increase the risk of blood clots, especially in women taking contraceptive pills.

In USA TODAY we read about diets promoted by celebrities and that these "plans are supposed to remove chemical and dietary toxins from the body. But weight-loss experts have long been skeptical about the claims, saying there is no scientific evidence such programs do a better job than the body's own organs. They also say many of the plans are deficient in protein and other nutrients."

Boosting calcium consumption spurs weight loss, according to a study published in the most recent issue of the British Journal of Nutrition, but only in people whose diets are calcium deficient.