A new study has determined that fad diets like Atkins, Ornish, Weight Watchers, and the Zone produced only modest weight-loss with limited sustainability. Ian Ayres of the Freakonomics blog has more:
A randomized control year-long study looked at the impact of four different diets (Atkins, Ornish, Weight Watchers, and Zone Diets) on a group of overweight and obese subjects who were looking to lose weight. The diets produced only “modest” average weight loss of about 6.4 lbs (2.3 percent of original body weight) and found no statistically significant difference in weight loss for the four different diets.
People do a pretty good job of losing weight for about half a year, and then their weight tends to drift back toward their pre-diet number. The difficulty of sustaining weight loss can be seen in this figure taken from a 2-year randomized study of the Weight Watchers program:
All those second rate diets fail, because without addressing adequate micronutrient density, people crave more food than their body requires for good health.Here’s my UNEXPERT opinion. Ditch the “diet” and change your lifestyle. Hey, it worked for me—Healthy, with a Vengeance!
In spite of the more than $110 million consumers spend every day on diets and “reducing” programs (more than $40 billion per year), Americans are the most obese people in history. To be considered obese, more than one-third of a person’s body must be made up of fat. A whopping 34 percent of all Americans are obese, and the problem is getting worse, not better.
Unfortunately, most weight-loss plans either don’t work or offer only minor, usually temporary, benefits. There are plenty of “rules and counting” diets, diet drugs, high-protein programs, canned shakes, and other fads that might enable you to lose some weight for a period of time. The problem is that you can’t stay on these programs forever.