A lot of you guys are so misinformed on how the body works and how to lose weight properly it's sad. Starving yourself will only do one thing. Spike your metabolism into the ground and make your body conserve fat. There is no such thing as a diet that is sustainable. The only thing that works is changing your lifestyle. You may lose weight on a "diet" but most of it will be muscle and you will gain all your weight back again when you are done. Only this time, you will gain fat. Not only will you gain fat, but because you dumped your muscle in an attempt to lose weight no matter what that weight was, the fat will be harder to lose the next time around. If you guys want some real information on how to lose FAT not weight, check this website out. www.fatwars.com. Unlike what you have been led to believe, even the morbidly obese can lose weight with a proper diet ( and by this I mean the way you eat as Simon said) and exercise. It IS possible. But it takes knowledge and the will to change.