Written by Fit with Food’s Lead Dietitian Michael Reavis Jr.

When we think about staying hydrated, we often focus solely on drinking water. However, many fruits and vegetables are packed with water and can help us reach our hydration targets without requiring us to sip on endless glasses of water. In this post, we’ll explore some surprisingly hydrating foods that can contribute to your daily fluid intake while also providing valuable nutrients to support overall health.

1. Cucumbers: The Hydration Powerhouse

Did you know that cucumbers are about 90% water? A medium cucumber typically weighs around 300 grams (roughly 10.5 ounces), and it can provide about 9 ounces of water. This may not seem like a lot, but it’s a significant contribution to meeting your daily hydration goals. In fact, if we consider that the average fluid needs for an adult are about 64 ounces per day, one cucumber could provide roughly 15% of your daily hydration needs.

Beyond hydration, cucumbers also offer essential nutrients like Vitamin A (which supports healthy skin), Vitamin K (important for bone health), and fiber. While cucumbers don’t pack a heavy punch in terms of these vitamins, they can still play a role in supporting your overall nutrition—especially since many Americans fail to meet their daily fiber goals.

2. Lettuce: Romaine vs. Iceberg

Both romaine and iceberg lettuce are around 95% water, making them fantastic options for staying hydrated. While they offer only about 1 gram of fiber per cup, they can still provide other valuable nutrients. Romaine lettuce, in particular, stands out because it’s higher in Vitamin A, Vitamin K, and folate—important for DNA repair and red blood cell production.

That said, it’s important not to get bogged down by which vegetable is “better” for you. Only about 20% of Americans consume enough fruits and vegetables daily. Adding any lettuce—whether romaine or iceberg—into your meals is a much more important step toward better nutrition than obsessing over which type is superior.

3. Celery: The Easy Hydrating Snack

Celery is another great hydrating vegetable, as it’s about 95% water. A typical serving of two celery stalks can provide around 3 ounces of water, making it a solid snack choice when you’re aiming to meet your hydration goals. Celery also contains potassium, which is essential for maintaining healthy blood pressure and heart function, as well as Vitamins A and K.

What’s even better is how easy celery is to prepare. You can simply wash it, chop it into quarters, and pair it with peanut butter or hummus for a satisfying afternoon snack. It’s a quick, no-fuss way to sneak in some hydration while satisfying your hunger.

4. Radishes: A Refreshing Root Vegetable

Radishes may not be the first vegetable you think of when trying to stay hydrated, but they are about 95% water. This is significantly higher than other root vegetables like carrots (85%) or potatoes (75%). Because radishes are often eaten raw—whether in salads or as a crunchy snack—their water content is preserved, making them an excellent addition to your hydration strategy.

Just one serving of radishes can provide around 3 ounces of water. They also offer a bit of fiber and are rich in antioxidants, making them a great, low-calorie food for adding both crunch and hydration to your diet.

5. Tomatoes: A Sweet Way to Hydrate

Tomatoes are a go-to food in many households, and for good reason—they’re not only delicious but also packed with water, as they are around 95% water. A medium tomato typically weighs between 5-6 ounces, and it can provide you with 4-5 ounces of water. Whether you’re slicing them for a salad, making a fresh sauce, or enjoying them with a bit of fresh mozzarella, tomatoes can easily contribute to your daily hydration needs.

Tomatoes are also packed with nutrients like beta-carotene (a potent antioxidant), Vitamin E (which supports vision, skin, and reproductive health), Vitamin A, and Vitamin C (which helps boost immune health). With their rich nutritional profile, tomatoes are a great food to incorporate into your diet for both hydration and overall well-being.

6. High-Volume Foods: Stay Full and Hydrated

As a dietitian, I often recommend adding “high-volume” foods to your diet—those that take up a lot of space in your stomach without providing a significant number of calories. These foods can help you feel fuller for longer, support hydration, and contribute to overall health.

The foods we’ve covered today—cucumbers, lettuce, celery, radishes, and tomatoes—are all excellent examples of high-volume foods. They’re not only low in calories but also fill up your stomach, helping to regulate hunger. This is important because the hormone ghrelin, which signals hunger to your brain, rises when your stomach is empty. Foods that are high in water and fiber (like those above) take longer to digest and can provide a sense of fullness that helps with appetite control and overall satisfaction at meals.

Conclusion: Hydrate and Nourish with Every Bite

Incorporating hydrating foods like cucumbers, lettuce, celery, radishes, and tomatoes into your daily meals and snacks is an easy way to boost your hydration levels without having to focus solely on drinking water. These foods are not only hydrating but also provide important nutrients that contribute to your overall health—whether it’s vitamins, fiber, or antioxidants.

So, next time you’re looking for ways to stay hydrated, remember that your plate can be just as important as your glass of water. Adding more high-volume, water-rich foods to your diet is a simple and delicious way to support both your hydration needs and overall well-being. Happy eating!

When we think about staying hydrated, we often focus solely on drinking water. However, many fruits and vegetables are packed with water and can help us reach our hydration targets without requiring us to sip on endless glasses of water. In this post, we’ll explore some surprisingly hydrating foods that can contribute to your daily fluid intake while also providing valuable nutrients to support overall health.

1. Cucumbers: The Hydration Powerhouse

Did you know that cucumbers are about 90% water? A medium cucumber typically weighs around 300 grams (roughly 10.5 ounces), and it can provide about 9 ounces of water. This may not seem like a lot, but it’s a significant contribution to meeting your daily hydration goals. In fact, if we consider that the average fluid needs for an adult are about 64 ounces per day, one cucumber could provide roughly 15% of your daily hydration needs.

Beyond hydration, cucumbers also offer essential nutrients like Vitamin A (which supports healthy skin), Vitamin K (important for bone health), and fiber. While cucumbers don’t pack a heavy punch in terms of these vitamins, they can still play a role in supporting your overall nutrition—especially since many Americans fail to meet their daily fiber goals.

2. Lettuce: Romaine vs. Iceberg

Both romaine and iceberg lettuce are around 95% water, making them fantastic options for staying hydrated. While they offer only about 1 gram of fiber per cup, they can still provide other valuable nutrients. Romaine lettuce, in particular, stands out because it’s higher in Vitamin A, Vitamin K, and folate—important for DNA repair and red blood cell production.

That said, it’s important not to get bogged down by which vegetable is “better” for you. Only about 20% of Americans consume enough fruits and vegetables daily. Adding any lettuce—whether romaine or iceberg—into your meals is a much more important step toward better nutrition than obsessing over which type is superior.

3. Celery: The Easy Hydrating Snack

Celery is another great hydrating vegetable, as it’s about 95% water. A typical serving of two celery stalks can provide around 3 ounces of water, making it a solid snack choice when you’re aiming to meet your hydration goals. Celery also contains potassium, which is essential for maintaining healthy blood pressure and heart function, as well as Vitamins A and K.

What’s even better is how easy celery is to prepare. You can simply wash it, chop it into quarters, and pair it with peanut butter or hummus for a satisfying afternoon snack. It’s a quick, no-fuss way to sneak in some hydration while satisfying your hunger.

4. Radishes: A Refreshing Root Vegetable

Radishes may not be the first vegetable you think of when trying to stay hydrated, but they are about 95% water. This is significantly higher than other root vegetables like carrots (85%) or potatoes (75%). Because radishes are often eaten raw—whether in salads or as a crunchy snack—their water content is preserved, making them an excellent addition to your hydration strategy.

Just one serving of radishes can provide around 3 ounces of water. They also offer a bit of fiber and are rich in antioxidants, making them a great, low-calorie food for adding both crunch and hydration to your diet.

5. Tomatoes: A Sweet Way to Hydrate

Tomatoes are a go-to food in many households, and for good reason—they’re not only delicious but also packed with water, as they are around 95% water. A medium tomato typically weighs between 5-6 ounces, and it can provide you with 4-5 ounces of water. Whether you’re slicing them for a salad, making a fresh sauce, or enjoying them with a bit of fresh mozzarella, tomatoes can easily contribute to your daily hydration needs.

Tomatoes are also packed with nutrients like beta-carotene (a potent antioxidant), Vitamin E (which supports vision, skin, and reproductive health), Vitamin A, and Vitamin C (which helps boost immune health). With their rich nutritional profile, tomatoes are a great food to incorporate into your diet for both hydration and overall well-being.

6. High-Volume Foods: Stay Full and Hydrated

As a dietitian, I often recommend adding “high-volume” foods to your diet—those that take up a lot of space in your stomach without providing a significant number of calories. These foods can help you feel fuller for longer, support hydration, and contribute to overall health.

The foods we’ve covered today—cucumbers, lettuce, celery, radishes, and tomatoes—are all excellent examples of high-volume foods. They’re not only low in calories but also fill up your stomach, helping to regulate hunger. This is important because the hormone ghrelin, which signals hunger to your brain, rises when your stomach is empty. Foods that are high in water and fiber (like those above) take longer to digest and can provide a sense of fullness that helps with appetite control and overall satisfaction at meals.

Conclusion: Hydrate and Nourish with Every Bite

Incorporating hydrating foods like cucumbers, lettuce, celery, radishes, and tomatoes into your daily meals and snacks is an easy way to boost your hydration levels without having to focus solely on drinking water. These foods are not only hydrating but also provide important nutrients that contribute to your overall health—whether it’s vitamins, fiber, or antioxidants.

So, next time you’re looking for ways to stay hydrated, remember that your plate can be just as important as your glass of water. Adding more high-volume, water-rich foods to your diet is a simple and delicious way to support both your hydration needs and overall well-being. Happy eating!