Studies show that our bodies don't register empty calories from liquids like they register calories from food. When you drink 200 calories from a soft drink or fruit-aid, you typically don't adjust the rest of your dietary intake based on those calories. The result is excess calorie consumption, eventually leading to weight gain. Water aids in elimination. Having regular bowel movements keeps dangerous bacteria out of the body and may prevent diseases of the colon such as diverticulosis.
Water helps prevent bladder infections.
Studies indicate that men who consume more than 10 glasses of water per day are less likely to develop bladder infections than those that did not. Water helps fill you up, so you're less likely to eat. Drinking lots of water may aid in weight loss and long-term weight control. In addition, when you're drinking water, you're probably not drinking other high calorie beverages, most of which dehydrate you. Water helps keep your heart functioning.