Rapid weight loss for morbidly obese individuals has been demonstrated with the use of very-low-calorie diets
Other studies have suggested that very-low-calorie diets
(less than 800 kcal/day) may not be more effective than low-calorie diets (less than 1,200 kcal/day) over the long term.
Low- and very-low-calorie diets
are indicated for patients with BMI >35 kg/[m.
Intensive, very-low-calorie diets
are an appropriate method of weight loss and may be superior in maintaining weight loss, compared with more modest weight-loss programs, two researchers from the University of Kentucky said at the annual meeting of the American College of Nutrition.
In general, however, 48 randomized clinical trials have shown no greater long-term weight loss with very-low-calorie diets
than with less restrictive regimens.
5,28,29) Very-low-calorie diets
(400-500 kilocalories per day) may increase rates of weight loss initially, but at 1 year, results are similar to those of low-calorie diets (SOR: A).
The gallstones that developed in people on very-low-calorie diets
were usually silent and did not produce any symptoms.
have recently been used in weight-control programs, but even people who need to lose weight for urgent medical reasons find these regimens difficult to follow--and must remain under medical supervision.
have been shown to effect substantial but transient weight loss, and the maintenance of weight loss remains a major challenge.