Is Watermelon Keto-Friendly? (2024)

Compared to many other fruits, watermelon is relatively low in carbohydrates. Depending on your overall diet, you may be able to consume watermelon in moderation while following a ketogenic diet.

Watermelon is a delicious and refreshing summertime staple.

In addition to promoting hydration thanks to its high water content, it’s a good source of several nutrients, including vitamins C and A (1).

What’s more, watermelon contains several antioxidants, such as lycopene, which may be linked to improved heart health and a lower risk of certain cancers (2).

You may wonder whether watermelon can fit into the ketogenic, or keto diet, an eating pattern that involves limiting your carb intake and eating a high amount of healthy fats instead.

Given that the keto diet is highly restrictive and requires strict adherence to maximize results, many fruits are considered off-limits, causing some to find it somewhat challenging to follow.

This article determines whether watermelon can be enjoyed as part of a healthy keto diet.

Because most fruits are high in carbs, those following the ketogenic diet can only enjoy them in small amounts.

However, compared with other types of fruit, watermelon is relatively low in carbs.

In fact, 1 cup (152 grams) of diced watermelon contains about 11.5 grams of carbs and 0.5 grams of fiber, which means that it has about 11 grams of net carbs (1).

Net carbs is a term used to describe the number of carbs in a portion of food that is absorbed by the body. They’re calculated by subtracting the grams of fiber from the grams of total carbs.

Whether watermelon can fit into a ketogenic diet depends on what else you’re eating during the day.

On a 2,000-calorie diet, you may be restricting your carb intake to just 100 calories, or 25 grams, per day.

Therefore, a single serving of watermelon could take up nearly half of your daily carb allotment.

Though you can definitely fit watermelon into a keto diet, it may take careful planning and require you to reduce your portion sizes to keep your carb count in check.

Summary

Watermelon can fit into a ketogenic diet, but it may require careful planning and decreased portion sizes to stick within your daily carb allotment.

Restricting your carb intake doesn’t mean that you need to cut fruit out of your diet altogether.

In fact, several fruits can easily fit into a well-planned ketogenic diet.

For instance, avocados are low in carbs but high in heart-healthy fats and fiber, as well as a number of other important vitamins and minerals (2).

Lemons and limes are also much lower in carbs than other types of fruit (3, 4).

Plus, certain types of berries can be enjoyed in moderation.

For example, strawberries, raspberries, and blackberries contain moderate carb contents but are high in fiber, making them lower in net carbs (5, 6, 7).

Summary

In addition to watermelon, several other types of low carb fruits can be enjoyed in moderation on a ketogenic diet.

The ketogenic diet requires you to significantly cut back on carbs, which often means eliminating higher carb foods like fruit from your diet.

Fortunately, compared with other fruits, watermelon is relatively low in carbs and can be enjoyed as part of a ketogenic diet.

However, it may require careful planning, and you may need to decrease your portion sizes to help fit it in.

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It’s recommended to work with a registered dietitian to ensure that your intake of important nutrients, such as fiber, are fulfilled daily, as well as to help incorporate the right amount and types of carbs on a keto diet.

Is Watermelon Keto-Friendly? (2024)

FAQs

Can I eat as much watermelon as I want on keto? ›

“Watermelon is relatively low in carbs compared to other fruits,” says Yawitz, explaining that you can't stay in ketosis if you eat large amounts of it, or if you're getting too many carbs from other foods. “But in small amounts, watermelon can absolutely fit into a keto diet.”

How much watermelon is a keto serving? ›

Watermelon

Watermelon is a flavorful and hydrating fruit that's easy to add to a ketogenic diet. Compared with other fruits, watermelon is relatively low in net carbs, with around 11.5 grams of carbs and 0.5 grams of fiber in a 1-cup (152-gram) serving ( 2 ).

Can you eat watermelon to lose weight? ›

Watermelon is one of many low-calorie fruits that can be helpful for losing weight. Not only is it good for your everyday health, but it's also a delicious snack for anyone with a sweet tooth.

Can I eat watermelon on a no sugar diet? ›

Yes, fruits like watermelon do contain sugar, but this naturally occurring sugar is different from added sugar. When it comes to reducing sugar intake, your goal should be to reduce added sugars. Fruit is beneficial as part of a healthy eating pattern because it also contains water, fiber, and other nutrients.

What is the lowest carb fruit? ›

Watermelon, the sweet summertime treat, is 92% water and the lowest-carb fruit by far, with 7.5 carbs for every 100 grams.

Can I eat cantaloupe on keto? ›

Cantaloupe. Cantaloupe has a sweet taste but doesn't mess with Ketosis. A half-cup of cantaloupe contains about 5.8g of Carbs, 3.8g of Fibers, and 3.5g of sugar. Although the values are higher than Avocado, still they do not interfere with the body's Ketosis.

Are pineapples keto friendly? ›

Pineapple is a tropical fruit that's popular for its sweet taste. However, it's unsuitable for the keto diet due to its high sugar content. A single cup contains about 22 grams of carbohydrates, mostly from natural sugars.

Is watermelon high in sugar? ›

While Johnston says watermelon "satisfies the sweet tooth," it has less sugar than many other popular fruits. Mangoes, grapes, cherries and pears all have more grams of sugar per serving than watermelon. But watermelon still has about 17 grams per slice, so it's best not to load up on too much of it at once.

What vegetables are keto friendly? ›

Plenty of low-carb vegetable options include arugula, asparagus, bell peppers, broccoli, Brussels sprouts, cauliflower, kale, mushrooms, spinach, and tomatoes. Those vegetables provide other benefits like reducing the risk of certain chronic diseases, containing antioxidants, and providing filling fiber.

Will watermelon burn belly fat? ›

Watermelon is a good source of lycopene, an antioxidant that has been shown to help reduce belly fat. It is also a good source of water, which can help you feel full and satisfied after eating.

What is the 30 day watermelon challenge? ›

The most popular is a sort of cleanse. It involves a relatively short (but strict) deprivation period, followed by a return to your regular diet. During the first stage, dieters eat nothing but watermelon.

What does eating watermelon for 3 days do? ›

A watermelon diet, often used for short-term detox or weight loss, offers several benefits. Watermelon is low in calories but high in water content, keeping you hydrated and helping control appetite. It's a good source of vitamins A and C, aiding in immune support and skin health.

Why is watermelon not keto friendly? ›

One cup of diced watermelon has 11 g of net carbohydrates because it contains 11.6 g of total carbohydrates and around 0.6 g of fiber. Ketogenic diets heavily restrict the amount of carbohydrates that a person can eat in a day.

Is too much watermelon bad for you? ›

Watermelon is considered a high FODMAP (fermentable oligosaccharides, disaccharides, monosaccharides, and polyols) fruit, which means it contains short-chain sugars that some people have trouble digesting, Derocha says, so it “may cause bloating or discomfort when consumed in large amounts.”

What not to eat with watermelon? ›

It is recommended to avoid mixing watermelons, muskmelons, cantaloupe, and honeydrops with other fruits. “Melons should only be eaten with melons as they are digested more rapidly than other fruits. Melons have high water content, so they might not digest properly when combined with fruits,” said Dr Reddy.

Can I eat as much fruit as I want on keto? ›

Fruits lower in sugars and higher in fiber may be suitable on a keto diet, but a person should eat them in moderation. Fiber is an important factor in the keto diet. A person's body cannot digest this substance.

Can you eat as much watermelon as you want and not gain weight? ›

If you're trying to lose weight, watermelon is one of the best fruits to include in your diet. It's high in water yet low in calories, which can keep your appetite in check. Watermelon contains beneficial compounds that may help burn fat and improve digestion.

Why am I craving fruit on keto? ›

If your fruit cravings are very strong, they may indicate a deficiency in some essential vitamins. The key principle of a healthy low-carb diet is to eat plenty of low-carb vegetables. Many of them (for example, green leafy veggies, broccoli, bell peppers and tomatoes) are nutritional treasures.

Does watermelon have a lot of sugar or carbs? ›

One cup, or 152 grams (g), of diced watermelon contains 9.42 g of natural sugar and 11.5 g of carbohydrates. One wedge (about one-sixth of a watermelon, or 286 g) contains 17.7 g of natural sugar and 21.6 g of carbohydrates.

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