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Brain tumor, breast cancer, colon cancer, congenital heart disease, heart arrhythmia. The Mayo Clinic Diet: What is your weight-loss goal? Water: How much should you drink every day? Water is essential to good health. These guidelines can help you find out. How much water should you drink each day? It’s a simple question with no easy answer.

Studies have produced varying recommendations over the years. But your individual water needs depend on many factors, including your health, how active you are and where you live. But knowing more about your body’s need for fluids will help you estimate how much water to drink each day. What are the health benefits of water? Your body depends on water to survive. Every cell, tissue and organ in your body needs water to work properly. Lack of water can lead to dehydration — a condition that occurs when you don’t have enough water in your body to carry out normal functions.

Even mild dehydration can drain your energy and make you tired. How much water do you need? Every day you lose water through your breath, perspiration, urine and bowel movements. For your body to function properly, you must replenish its water supply by consuming beverages and foods that contain water. So how much fluid does the average, healthy adult living in a temperate climate need? These recommendations cover fluids from water, other beverages and food. What about the advice to drink 8 glasses a day?