Over time, obesity is one of the known lifestyle risks associated with cancer. Keeping at a healthy weight and eating nutrient-rich foods is recommended to maximizing cancer prevention. Many people are interested in losing weight, as witnessed by the flourishing weight loss industry. Advertisements for weight loss programs are in the media daily. There are those who do not care or try to maintain a healthy weight and there are those on the other end of the spectrum of weight consciousness who follow an extreme in maintaining a weight they believe leads to longevity. Calorie Restriction practitioners, CRonies, are a group of people trying to live longer by eating far fewer calories than the average person and suggest there is a growing body of evidence that seriously restricting calories can guard against many diseases, like cancer, and delay old age.

It's not about anorexia, although CRonies admit there is a danger to this style of eating that might attract or lend legitimacy to anorexics. But as the group explains, anorexics never arrive at that mental place where they believe they are thin enough. The motivation for the CRonies calorie restriction diet is longevity and health and to prevent disease. There are positives and negatives to this program, and not to be undertaken lightly. For additional information, visit The Calorie Restriction Society.