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Does apple juice hydrate or dehydrate you?

Staying hydrated is important for overall health. Some beverages are better than others when it comes to hydration. This article explores whether apple juice hydrates or dehydrates you.

How Hydration Works

Water is essential for the body to function properly. It makes up 50-70% of your body weight. Water is needed for various bodily functions like regulating temperature, cushioning joints, protecting organs and tissues, and more. When you lose water through sweat, urine, breathing, and bowel movements, it needs to be replaced.

Dehydration occurs when the water loss is greater than the water intake. Mild dehydration can cause fatigue, headache, dry mouth, and thirst. Severe dehydration can lead to confusion, low blood pressure, rapid heartbeat, fever, and unconsciousness.

To avoid dehydration, health experts recommend drinking enough fluids daily. The adequate intake is 3.7 liters for men and 2.7 liters for women. This can come from water, other beverages, and food.

Water Content in Apple Juice

The water content is one factor that determines how well a beverage hydrates you. Apple juice is made by pressing apples to extract the liquid. During this process, some water from the apples mixes with the sugars and other fruit solids.

One 8 ounce (240 ml) serving of apple juice contains about:

  • 88% water
  • 110 calories
  • 24 grams sugar
  • Vitamin C, potassium, antioxidants

Compared to other popular juices like orange juice and grape juice, apple juice has a relatively high water content. However, it contains less water than an equal serving of plain water.

Effect on Hydration

Despite having a good amount of water, apple juice may not hydrate as effectively as plain water. There are a few reasons why:

Sugar Content

Apple juice is high in natural sugars like fructose and glucose. One serving has about 24 grams of sugar, similar to sodas. Consuming sugary drinks causes more urine output compared to water, leading to increased fluid loss.

Lack of Electrolytes

Electrolytes like sodium and potassium help the body absorb and retain water. Sports drinks contain added electrolytes for this reason. Apple juice has minimal electrolytes compared to sports drinks and coconut water.


The calories in apple juice can make you feel full. This may prevent you from drinking adequate amounts of fluid compared to calorie-free water.

For these reasons, plain water is considered optimal for day-to-day hydration needs.

Hydration Ability

Research suggests that apple juice may hydrate slightly less effectively than plain water:

Beverage Hydration Index
Water 100
Apple juice 88
Orange juice 82
Milk 68
Coca cola 65

The hydration index measures how effectively a beverage hydrates compared to water. Water is given an index of 100. Beverages with higher scores are better for hydration.

With an index of 88, apple juice hydrates moderately well but slightly less than plain water. It hydrates better than orange juice, milk, and soda.

Who Should Limit Intake

Apple juice provides hydration, but it may not be ideal for everyone:

  • Diabetics: The natural sugars may spike blood sugar levels.
  • Those monitoring calories: Apple juice is relatively high in calories, which can contribute to weight gain.
  • Those with GI issues: Some report diarrhea or abdominal pain from the fructose in juice.
  • Babies under 1 year: Juice offers no nutritional benefit and may displace breastmilk or formula.

Those without these concerns can include some apple juice in a balanced diet and use it for occasional hydration.

Maximizing Hydration from Apple Juice

You can get the most hydration from apple juice by:

  • Drinking small amounts at a time like 4-6 ounces.
  • Drinking slowly rather than gulping it.
  • Having it with meals instead of on an empty stomach.
  • Diluting it with a little bit of water.
  • Avoiding other sugary drinks and opting for water instead.

Staying Hydrated

Here are some tips to meet your daily fluid needs:

  • Drink water regularly throughout the day rather than guzzling a large amount at once.
  • Carry a water bottle as a reminder to drink.
  • Flavor water with fruits, herbs, or a splash of juice.
  • Eat hydrating fruits and vegetables like cucumbers, watermelon, strawberries, lettuce, tomatoes, and celery.
  • Limit caffeine and alcohol which have dehydrating effects.
  • Check your urine color. Pale yellow indicates good hydration while dark yellow urine signals dehydration.


Apple juice provides a good amount of water, but it may not hydrate quite as well as plain water. Enjoy apple juice in moderation as part of a balanced diet, and opt for water as your primary hydration source. Drink plenty of fluids spread throughout the day to stay hydrated for good health.