Are You Drinking Enough: Here’s How Much Water You Need

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, your activity, and where you live.

No single formula fits everyone. But knowing more about your body’s need for fluids will help you estimate how much water to drink each day.

How Much Water Should You Drink Everyday?

One of the first things to consider is your body weight. You may have heard the old maxim, “Drink eight 8-ounce glasses of water a day,” or some variation of this rule.

Drinking eight glasses of water each day is a great goal. But it’s less helpful as a hard-and-fast rule.

Many factors determine how much water you need to drink.

For example, a 140-pound person needs different amounts of water than a 170-pound person.

Other factors that affect how much water you need each day include your level of activity, the climate you live in, your existing health condition and even your diet.

The National Academies of Sciences, Engineering, and Medicine of the United States decided that an appropriate daily fluid consumption is as follows:

  • Men should drink around 15.5 cups (3.7 litres) of fluids every day.
  • Women should drink 11.5 cups (2.7 litres) of fluids every day.

These guidelines apply to fluids such as water, other drinks, and meals. Approximately 20% of daily fluid consumption is typically derived from meals, with the remainder derived from beverages.

Health Benefits of Drinking Water

Water Flushes Toxins From the Body

Water is essential for the proper functioning of all body systems. Water is involved in every chemical process that takes place in your body.

Water also flushes toxins from your body. Many of the body’s functions are dependent on the proper balance of fluids. Water and other fluids also help regulate body temperature.

Water Helps Your Kidneys Function Properly

The kidneys are responsible for filtering out waste products from the blood. Every day, your kidneys filter more than 120 quarts of blood to remove wastes.

Water helps to flush these wastes from the body through your urine. If you drink fewer liquids, your kidneys may not be able to flush toxins from your body as well.

Water Keeps Your Body Strong and Healthy

Water helps to keep all of your body systems functioning properly. Water helps the body’s temperature stay within an appropriate range.

Water also keeps joints lubricated, allowing you to move and stretch freely.

Water Helps Your Body Absorb Nutrients

Water is essential for the absorption of nutrients in the body. Water and other fluids help to flush food wastes from the intestines and pass them on to the colon for elimination.

Water Promotes Regular Bowel Movements

Water is essential for the movement of food waste through your intestines. When you don’t drink enough fluids, your stool may become hard and compacted, leading to constipation and other digestive system problems.


How much water you need to drink each day depends on your weight, activity level and other factors.

But drinking plenty of water is an important part of achieving and maintaining good health.

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