Here’s how many glasses of water you should really be drinking a day for ‘peak health,’ says nutritionist

The National Academy of Medicine recommends an adequate intake of daily fluids of about 13 cups and 9 cups for healthy men and women, respectively (with 1 cup equaling 8 ounces).

However, it may vary depending on several factors, such as age, sex and lifestyle. If you exercise often and live in a hot climate area, for example, you may need more fluid intake.

It’s also possible to take in too much water if you have certain health conditions, such as thyroid disease or kidney, liver or heart problems, according to Dr. Howard LeWine, an internist and Chief Medical Editor at Harvard Health Publishing.

And research shows that certain medications, such as non-steroidal anti-inflammatory drugs (NSAIDs) and some antidepressants, make you retain water.

It’s helpful to speak to a medical professional for more specific guidance.

A little bit of sodium is okay. It can actually help with hydration by balancing fluids in our cells, but too much can worsen your hydration status.

I love low-sodium vegetable, lentil and chicken noodle soups. They’re packed with proteins that help keep you full, without all the heavy creams you typically find in chowders or bisques.

2. Water-rich fruits

Made up of nearly 92% water, watermelon is one of the fruits with the highest water content.

But there are plenty of other water-rich fruits to choose from, including cantaloupes, strawberries, oranges, apples, pineapples and grapes.

3. Hydrating veggies

Some vegetables contain 80% to 99% water, such as celery, cucumbers, cabbage, carrots and broccoli.

Swapping out salty chips for crispy vegetables will help you still get the crunch you crave, but with fewer calories and more nutrients.

4. Refreshing fruit desserts

Many frozen dessert options provide hydration with fewer calories, like Italian ice, sorbet, snow cones and ice pops.

They can still be high in sugar, which may actually make you feel more thirsty (and can potentially increase your blood sugar levels), so keep your portions small.

5. Coffee or tea

Coffee and tea are both made with water, but depending on the type you choose, your blend may contain lots of caffeine, which in large amounts is considered a diuretic that can cause dehydration. 

The Food and Drug Administration recommends keeping your caffeine intake under 400 milligrams a day, or roughly four to five cups of coffee.

Lauren Armstrong is a dietitian and nutrition coach. She was also a nutritionist for The Women, Infant and Children (WIC) program. Lauren received her bachelor’s degree in dietetics from Western Michigan University and has written for several publications, including Livestrong and HealthDay.

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