How much weight will lose eating 800 calories a day?

Answer 1

some people say that your body will go into starvation mode and not lose weight. however, I've done it and lost 40 pounds! was it easy? no. I exercised at least 3 times a week. people will also say once you start eating again you will gain it back. as long as you keep your calories at what you should be intaking for your height and weight and keep exercising you should keep the weight off.

800 cals/day is far too little to stay healthy on. Your body will switch to starvation mode, you'll be cold and lethargic all the time. If you're a woman you are likely to stop menstruating. Your immune system will weaken. Unless you take supplements you run the risk of malnutrition. Aim for maybe somewhere around 1500 cals/day, or maybe a little more. That will give you enough to work with to set up a sustainable diet and a loss rate of maybe 2-3 pounds/week.