Is Watermelon Good for Diabetes

Chronic health conditions are defined as ailments that can last for a very long period, sometimes for the rest of the afflicted person’s life. People afflicted with such conditions must incorporate various life changes to manage the condition.

Diabetes is one such chronic disease that affects millions of people worldwide. It occurs when the body cannot produce or use insulin effectively, resulting in high blood sugar levels.

One of the lifestyle changes to be followed by those afflicted with this condition is careful monitoring of their diet to avoid spikes in blood sugar levels.

One food that has been touted for its potential benefits for people with diabetes is watermelon. This article will explore the potential health benefits of this refreshing fruit and whether watermelon is good for diabetes.

About Diabetes

Diabetes is a chronic illness that is marked by high blood glucose levels. It impacts how the body metabolizes food, especially carbohydrates, and can lead to severe health complications when left untreated. There are two types of this condition, type 1 and type 2 diabetes.

Type 1 diabetes is an autoimmune disease caused due to the attack of the insulin-producing cells in the pancreas by the immune system. This results in a lack of insulin, the hormone responsible for regulating blood glucose levels.

Lack of insulin can lead to extremely high blood sugar levels. Patients with this condition require insulin therapy to manage their blood glucose levels.

Type 2 diabetes, on the other hand, is a metabolic disorder that occurs when the body becomes resistant to insulin or doesn't produce enough of it. This type of diabetes is often associated with obesity, a sedentary lifestyle, and poor diet choices. It can be managed with lifestyle changes, such as healthy eating, regular exercise, and medication.

Diabetes can cause several health complications, including cardiovascular disease, kidney damage, nerve damage, and blindness. People with diabetes must monitor their blood sugar levels consistently and work closely with their healthcare team to manage their condition.

One of the most effective ways to manage diabetes is by monitoring your diet. Diabetes patients must pay close attention to the types and amounts of carbohydrates, fats, and proteins they consume to maintain healthy blood sugar levels.

Monitoring what they eat can help them avoid high spikes in blood sugar that can lead to long-term complications such as kidney damage, nerve damage, and heart disease.

Additionally, eating a balanced diet can help diabetes patients manage their weight, improve their energy levels, and reduce their risk of developing other health conditions.

About Watermelon

Originating from Africa, Watermelon is a juicy fruit packed with vitamins, minerals, and antioxidants. It is an excellent source of nutrients like vitamin C, vitamin A, potassium, and lycopene.

Watermelon contains powerful antioxidants, like lycopene, that give it its rich red color and can help the body combat damage caused by free radicals.

Watermelon contains low calories and has high water content, making its consumption a nutritious way of staying hydrated during the summer. 

Is Watermelon Good for Diabetes?

While watermelon is a healthy and refreshing fruit, its high sugar content has led some people to question whether it is a good choice for people with diabetes.

One cup of diced watermelon contains about 9 grams of sugar, slightly higher than other fruits like strawberries or blueberries.

However, it's important to remember that not all sugars are equal. Watermelon contains natural sugars, different from the added sugars in many processed foods.

Natural sugars are typically accompanied by fiber, which slows down the absorption of sugar into the bloodstream and can help prevent spikes in blood sugar levels.

Furthermore, watermelon has a low glycemic index, meaning it does not cause a rapid spike in blood sugar levels like high-glycemic-index foods such as white bread or sugary drinks.

This makes it a good choice for people with diabetes looking for a sweet and refreshing treat that won't cause blood sugar levels to skyrocket. 

Health Benefits of Watermelon for People Diagnosed with Diabetes

Health Benefits of Watermelon for People Diagnosed with Diabetes

Watermelon is a refreshing and delicious summer fruit that also provides a wide range of health benefits. Here are some health benefits of consuming watermelon for diabetics:

i). Hydration:

It can be difficult to stay hydrated during scorching hot summers. It is even more difficult to restore electrolytes lost by the body due to sweat from the heat. Watermelon comprises 92% water and contains various nutrients, electrolytes, and antioxidants. 

This makes it an excellent choice to stay hydrated and restore electrolytes in the body. This is especially helpful for diabetes as being well-hydrated can dilute sugars from food consumed, resulting in a smaller spike in blood sugar.

ii). Antioxidants:

Watermelon contains antioxidants like vitamin C, lycopene, and beta-carotene. These antioxidants help the body combat oxidative stress caused by free radicals. Antioxidants also reduce plasma sugar levels, making them ideal for diabetic patients.

iii). Heart health:

Citrulline is another nutrient watermelon can provide our bodies. It is an amino acid that can enhance blood flow, increasing the amount of oxygen available to tissues and organs.

Citrulline can also reduce inflammation in the body. This helps improve the health of the respiratory system, which in turn improves heart health.

As per the American Heart Association data, about 68% of diabetic patients over 65 die due to heart ailments. This can be offset by consuming watermelons for their benefits towards heart health.

iv). Digestive health:

The flesh of watermelon contains high dietary fiber. Dietary fiber promotes healthy digestion and enhances the ability of the body to absorb nutrients from food. Furthermore, it promotes healthy bowel movements. 

This makes watermelon an ideal addition for anyone looking to improve digestive health or lose weight. This is especially beneficial for diabetics as it helps slow down the absorption of sugar into the blood and increases the absorption of other nutrients from food.

v). Immune system support:

Watermelon is rich in several nutrients, including vitamin C. Vitamin C is an essential nutrient known to enhance the functioning of the immune system. 

Most diabetic patients suffer from an increasingly weakened immune system due to the adverse effects of diabetes. Watermelon can counteract that by strengthening the immune system.

vi). Skin health:

Lycopene is an antioxidant in watermelon responsible for its beautiful red color. It has been shown to protect the skin from sun damage and may even help prevent skin cancer.

Some diabetics might suffer from poor skin health due to their overt sugar consumption prior to diagnosis. Watermelon can help repair skin health to leave patients looking healthy.

Guidelines for Consuming Watermelons as a Patient with Diabetes

If you are a person suffering from diabetes, monitoring your food is a must. Here is a quick look at the nutrients present in watermelons:

Partial nutrient profile of watermelons (per 100 grams) as per USDA database 
Calories 127 KJ
Carbohydrates 7.55 grams
Carbohydrates as sugar 6.2 grams
Carbohydrates as dietary fiber 0.4 grams
Fats 0.15 grams
Protein 0.61 grams
Water 91.45 grams
Lycopene  4532 micrograms
Glycemic Index (GI) 72
Glycemic Load (GL) 2

As a general rule, food high in fiber and low in sugar is ideal for people suffering from diabetes.

One essential nutrient to monitor is the amount of sugar in your food. Diabetic patients are susceptible to unregulated spikes in blood sugar that they cannot regulate. Markers like Glycemic Index (GI) and Glycemic Load (GL) can help determine whether certain foods can be consumed.

A GI score is assigned based on how fast the sugar from that food enters the bloodstream. GI lesser than 55 is considered low, 55-69 medium, and above 70. As we can see, watermelon has a GI of 72, which is quite high. 

GL is assigned based on how much the food will raise blood glucose levels. GL under 10 is considered low, 10-19 is medium, and above 19 is high. Watermelon has a low GL of 2.

As can be seen, watermelon has a high GI but a low GL. This is due to the high water content of the fruit. This makes watermelon an excellent fruit to be consumed in moderation.

However, it should be noted that watermelon might not be the best choice of fruit for people suffering from diabetes. Other fruits, like apples, oranges, and grapes, have the desired combination of low sugar and high fiber and are more suitable for diabetic patients.

Watermelon can be consumed in moderation by diabetic patients. A serving of 200 grams is considered safe by several dieticians.

However, the right portion sizes vary with every patient. It is advisable to consult your healthcare provider or a certified dietician before making decisions regarding portion sizes.


Dealing with chronic health conditions can be a tiring experience as it demands several changes in your lifestyle.

However, it is important to remember that these conditions are easy to manage when proper measures are taken. Making a few healthy lifestyle changes is often sufficient to manage the condition effectively.

Diabetes can be managed by keeping track of what you consume. Identifying food with low sugar and low glycemic levels can help you structure your diet around them. By preparing such a chart, you can also better understand what food groups to avoid.

Certain fruits offer a chance to satisfy your sweet tooth without hampering your health or spiking your blood sugar levels. Watermelon is one among them.


Q1: What fruits can be consumed by diabetic patients?

Ans: Many low-sugar fruits can be consumed by people with diabetes. These fruits are characterized by low sugar and high-fiber content. Some of these fruits are strawberries, oranges, blueberries, grapes, raspberries, and apples. It is important to remember that while these are healthy fruits, moderation is still the key and must not be consumed in excess.

Q2: Can overeating watermelon be harmful to people with diabetes?

Ans: While watermelon can be a healthy addition to a balanced diet for people with diabetes, it's important to remember that portion size and moderation are key. Consuming any food in excess can have an adverse effect on health, and this holds especially true for those with diabetes. Working with a certified dietician is advisable to understand your ideal diet and portion sizes.

Q3: For a person afflicted with diabetes, is it better to consume the fruit or drink the juice of watermelon?

Ans: Generally, eating the whole fruit rather than drinking its juice is always better. This holds for watermelon as well. This is because of the high fiber content in whole fruits lost in juice. High fiber content slows down the absorption of sugar into the bloodstream. Furthermore, it also helps optimal absorption of other nutrients in the fruit.

Q4: Are there any precautions to be taken by diabetic patients while consuming watermelon?

Ans: While watermelon is a delicious fruit that can offer a range of health benefits, it might not be suitable for all. Ideal portion sizes vary from person to person depending on factors like age, other health conditions, and lifestyle. Consulting a healthcare provider, or a certified dietician, can help you understand the optimal quantity of consumption for you.

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Oliver Nelson

Oliver Nelson is a New York based Health Specialist Writer who completed his graduation from Syracuse University back in 2015. His writings were published in the top Healthcare brands in the United States.

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