If you starve yourself and drink water can you lose weight?

You can, but that is not very healty for you and once you start to eat normal again, you will gain the weight back very fast. I am trying to lose weight right now. I have found out that in order to lose 1 lb a week you have to cut out 500 calories a day. It takes 3500 calories to lose 1 lb of fat. Just eat healthy and exercise. And remember muscle weighs more than fat. Good luck and God Bless:)