How much water to drink in a day to help weight loss.

My Doctor told me that a big help in loosing weight is to drink plenty of water. It helps to flush the fat, toxins, regulate all your bodies functions and shrink your skin. The Doctor told me that everyone who is trying to loose weight should drink half of their bodies weight in ounces of water. For example if you weigh 200 pounds then you should drink 100 ounces of water a day. Needless to say you will be on the toilet a lot! But it is worth it. It really helps a lot. If you can't drink this amount right from the start it's ok just slowly add more water everyday. By the end of the month you should be drinking your full amount.