Watermelon Whole vs Juice: Which One Can Keep Your Blood Sugar Stable?

Watermelon is a popular summer fruit that contains about 92% water, which makes it ideal for hydration. Aside from the ample water content, watermelon has a naturally high dose of sugar whose exact sweetness may depend on its ripeness. While eating whole fruit is necessary to get the maximum health benefits, micro-nutrients and macronutrients, people tend to drink watermelon juice as a refreshing cooler. But have you ever wondered which is better for your body, a whole watermelon or watermelon juice? Especially those who struggle with high blood sugar or struggle to regulate their normal blood sugar, tend to overthink which form of watermelon is better for them.

Why Blood Sugar Response Matters

Blood sugar response should be steady and effectively regulated, as it directly impacts energy levels and metabolism. This is especially vital for diabetics and those with prediabetes, as they need to know how to naturally manage their blood sugar levels daily. When it comes to consuming fruits with naturally high sugar content, the response to whole fruit or juice can vary. This is based on an individual's ability to absorb the nutrients and metabolise the sugars present in the whole fruit.

Nutritional Differences Between Whole Watermelon And Juice

The primary difference between whole watermelon and watermelon juice is based on their respective nutritional profiles. This can be as follows:

• Fibre Content: Whole watermelon contains ample fibre, which promotes fullness, but juice contains no fibre as the pulp is removed from it. And if large quantities of watermelon juice are consumed without any protein or fat, then large sugar spikes can occur.
• Sugar Concentration: The high fibre content creates a fullness matrix that slows down the absorption of natural sugars ( fructose or glucose). On the other hand, watermelon juice, if it contains added sugars, can cause a significant postprandial glucose spike.
• Calories: Chewing whole watermelon stimulates salivary amylase and signals the gut-brain axis to prepare for digestion. This physiological process promotes satiety and regulates insulin response. Watermelon juice contains liquid calories that bypass the normal course of digestive cues, leading to a greater insulin spike.
• Glycaemic Load: The sugar spike that occurs after consuming whole watermelon can be significant at 75, but the chewing aspect makes it better for your digestive system. Watermelon juice has the ability to provide the body with an excess amount of naturally occurring sugars in a single serving. This is what creates an issue, as most people don't know the exact quantity of watermelon juice they are consuming.

Also Read: A Gastroenterologist Explains How Watermelon Consumption Affects Post-Meal Bloating

How Whole Watermelon Affects Blood Sugar

Research published in Metabolism Open highlights that watermelon affects blood sugar in a positive manner, and it is rich in fibre, vitamins, minerals, and L-citrulline. In addition, it contains:

• High fibre content in whole watermelon slows the absorption of naturally occurring sugars.
• Hydration and satiety benefits are immense when whole watermelon is consumed in a moderate manner.
• Portion control advantage is present, as most people stop their consumption after eating a portion.

Why Watermelon Juice Spikes Blood Sugar Faster

Research published in the Journal of Diabetes and Metabolic Disorders highlights that watermelon juice tends to spike blood sugar faster than whole fruit.

• Loss of fibre doesn't support slow sugar absorption into the bloodstream.
• Faster digestion is possible, but this leads to a greater blood sugar spike.
• Higher glycaemic impact causes people to experience a much more sudden rise and then a crash in energy levels.
• A larger effective sugar intake will cause your blood sugar to rise at a faster pace.

Whole watermelon and watermelon juice can benefit the body with their hydrating abilities but moderation is required
Photo Credit: Pexels

Which Is Better For People With Diabetes Or Prediabetes?

Prediabetics or those diagnosed with diabetes should be extra careful about the form of watermelon they are consuming in summers. Here are the guidelines they should follow, along with consulting their primary care physician, who has complete knowledge of their medical history:

• Whole fruit should be preferred over watermelon juice, as blood sugar regulation is reduced in people who are diabetic.
• The exact timing, for instance, before or after a meal, and the exact portion size need to be figured out by a nutritionist.
• Pairing with protein or fat is essential to make sure that watermelon doesn't quickly raise blood sugar.

Also Read: How To Consume 70-80 Grams Of Protein Every Day: 7 Essential Tips

Smart Ways To Eat Watermelon Without A Sugar Spike

Watermelon should be eaten in a smart way to ensure that it doesn't cause a sugar spike. Here is how it can help:

• Eating as part of a meal, not solely as watermelon when eaten after a meal, can cause acidity, bloating, and many other digestive issues.
• Avoid juicing, as it strips the fruit of fibre and reduces its nutritional profile.
• Control portion size, as it needs to be regulated to ensure your blood sugar levels are balanced.
• Choose fresh over packaged versions, as the composition of the fruit makes it better for nutritional intake.

So, it can be said that the whole watermelon is better than watermelon juice. But the key is moderation, and pay attention to personalised dietary advice to ensure your blood sugar levels aren't impacted in a negative manner.

Disclaimer: This content, including advice, provides generic information only. It is in no way a substitute for a qualified medical opinion. Always consult a specialist or your own doctor for more information. NDTV does not claim responsibility for this information.