Washington: The latest blockbuster diet from Britain recommends women, who are aiming to lose weight, to eat just 500 calories a day for two days a week.
But the weight-loss plan outlined in The Fast Diet, co-authored by London-based doctor Michael Mosley and writer Mimi Spencer, allows dieters to eat whatever they want on the remaining five days, the People.com reported.
"It`s not really fasting. It`s just a break from your normal routine. It`s not like an ordinary diet where you think about it all the time. The joy is that you get on with your ordinary life," said Mosley, who dropped 20 lbs. in three months on the plan.
But critics say restricting ourselves to roughly a quarter of our daily-recommended calories could be dangerous.
"Five hundred calories a day is potentially dangerous. There is some risk of slowing your metabolic rate. You`ll probably have a headache and feel distracted," said Dr. David L. Katz, director of Yale University`s Prevention Research Center.
Other experts worry about cravings.
Karen Ansel, spokeswoman for the Academy of Nutrition and Dietetics, says she sees more junk working its way into this diet, and over time one could end up with serious nutrient deficiencies.