The short answer is yes. When a person initially begins to lose weight, part of the reason is because of loss in fluids, so you should drink an adequate of water to help avoid getting dehydrated. In order to effectively burn calories, your body must maintain a good level of water, because staying hydrated will help the fat burning process. Also, when burning calories, your body creates toxins, which must be flushed out of your system, and water plays an important part in helping that process. Water also helps maintain muscle tone, by assisting muscles with their ability to contract, as well as lubricating the joints. This relates to dieting and weight loss, because exercising is a major part of the dieting process, and drinking water is necessary to effectively exercise. Without enough water, you will quickly become tired when exercising, and you will also begin to quickly feel sore. A good weight loss program and diet also should include a decent amount of fiber. While fiber is typically helpful for your digestive system, without enough water or fluids, it can cause constipation, when it should be helping to eliminate it. Also, drinking water may make you feel full sooner, and in return, satisfied with eating less than usual. However, water alone won't do much to help this; your body will also need a certain level of bulk, calories, and nutrients.

So how much water should you drink when trying to lose weight? The answer depends on your weight, your level of activity, the environment you live in, as well as your diet. A diet that includes foods with high densities of water, such as fruits and vegetables, will decrease your need to drink so much water. If you are drinking enough water, your urine should be a pale yellow color. However, some vitamin supplements and antibiotics can discolor it. If you're unsure if you've had enough, then you should go ahead and drink a little more. You won't harm yourself by drinking more water than usual, unless you consume a very massive amount, in a short period of time, and dilute the electrolytes in your blood.