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If you’ve recently been diagnosed with diabetes, going to the grocery store might feel like a minefield. You’ve likely heard that you need to cut sugar, and since fruit has natural sugars (fructose), it often gets a bad rep.
You might find yourself asking: Is it safe to eat a banana? Will an apple spike my blood sugar? What are the best fruits for diabetics?
The truth is that you don’t need to avoid or eliminate fruit from your meal plan. After all, fruit provides essential nutrients like antioxidants, fiber, vitamins, and minerals.
The key to fruit is not avoidance; it’s all about management.
Managing your diabetes is all about managing your blood sugar levels, and fruit can absolutely fit into that equation if you know which ones to choose, how much to eat, and when to eat them.
Here, we will go over the science behind the glycemic index (GI), how to identify the best fruits for diabetes, and offer practical strategies to enjoy sweets without the sugar spike.
Understanding the Glycemic Index and Glycemic Load
To make informed choices, you need to look past the calories and understand how different carbohydrates affect your body. This is where the glycemic index (GI) and glycemic load (GL) can come in handy.
What is the Glycemic Index?
The glycemic index is a rating system for foods that have carbohydrates. It determines how quickly each food affects your blood sugar levels when you eat that particular food on its own. The higher the rating, the more likely it is to negatively affect your blood sugar levels.
Low GI (55 or less): These foods are digested and absorbed slowly, causing a slower and smaller rise in your blood sugar levels.
Medium GI (56 to 69): These can cause a moderate rise in your blood sugar levels.
High GI (70 and above): These are absorbed quickly in your body, leading to a rapid spike in your blood sugar.
Why Does Glycemic Load Matter?
While the glycemic load (GL) tells you how fast a carbohydrate turns into sugar, it doesn’t tell you how many carbohydrates are in a serving. It’s not all about the type of food that you eat but also how much you eat.
That is where the glycemic load (GL) helps. It takes into account the portion size when analyzing the effects on your sugar levels.
For example, watermelon has a high GI (since it gets absorbed fast), but a serving of watermelon has very few carbs because it’s mostly water. Therefore, its GL is relatively low if you stick to a small portion.
To better manage your diabetes, prioritize low-GI foods and be mindful of GL by controlling portion sizes.
Top Fruits for People with Diabetes
Not all fruits are the same. The best fruits for managing diabetes are typically those rich in fiber and antioxidants since they are absorbed more slowly. Here are the five best fruits you can include if you have diabetes.
But before we go over them, keep in mind that the recommended portions might vary based on your goals and needs. For personalized advice, make sure you speak with a healthcare provider or Registered Dietitian.
Berries
No matter if you are talking about blueberries, strawberries, raspberries, or blackberries, berries are known to be a superfood. They are packed with antioxidants and fiber while being relatively low in sugar.
What makes them great is that they are high in anthocyanins, which may help improve insulin sensitivity.
Recommended Portion: ¾ to 1 cup of fresh berries.
Tart Cherries
Cherries are a delicious summer treat, but tart cherries are particularly good to help reduce inflammation and promote a good night’s sleep. They are high in potassium and antioxidants, which can support heart health.
Recommended Portion: 1 cup of raw cherries (approximately 12-13 cherries)
Apples
Apples are a great source of fiber, especially pectin, which you normally find in the apple’s skin. The fiber in apples slows digestion, making them a low-GI food (usually under 40).
Recommended Portion: One small apple, but make sure you eat the skin. Otherwise, you are removing its fiber, which can result in a faster blood glucose rise.
Pears
Just like apples, pears are high in fiber. One medium pear gives you around 5 grams of fiber, which gives you almost 20% of the daily recommended intake. A high fiber intake promotes satiety, which helps with weight management and helps you keep stable sugar levels.
Recommended Portion: One small to medium-sized pear.
Citrus Fruits
Oranges, grapefruits, and lemons are full of vitamin C and folate. They are refreshing and add plenty of water to your diet. Just keep in mind that you should eat the whole fruit, not the juice.
Recommended Portion: One medium orange or half a large grapefruit.
Fruits to Eat in Moderation
There are some foods you need to be careful with since they are higher in sugar and have a higher GI. This doesn’t mean that they are forbidden, but they require you to control the portion and do some strategic pairing.
Tropical Fruits
Tropical fruits like bananas, pineapples, and mangoes are sweeter and more calorically dense than other fruits. And, as they ripen, the sugar content concentrates, raising their GI score. That is why, if you decide to choose one, make sure you use ripe options.
Stick to half a banana, or ½ cup of cubed pineapple or mango. But, if your blood sugar levels are too high, try to avoid them until they come back to normal.
Dried Fruits
Raisins, dates, dried cranberries, and dried apricots are essentially concentrated sugar. To dehydrate them, the water is removed, shrinking the volume but keeping the carb count the same.
The problem is that it’s very easy to overeat on dried fruit. A handful of raisins can have the same amount of carbs as a large amount of grapes, but the problem is that you eat them in seconds.
Limit to no more than 2 tablespoons maximum, and ensure there is no added sugar in the ingredients list.
Tips for Including Fruits in a Diabetes-Friendly Diet
The fruit you add is not the only thing you need to pay attention to; you also need to consider the timing and what you pair it with. Here are some practical ways to enjoy fruit while keeping your blood sugar numbers in range.
Eat the Fruit, Don’t Drink It
Fruit juice removes the fiber from the fruit. Without the fiber, the sugar enters your bloodstream almost instantly. In fact, a glass of orange juice can have the same amount of sugar as three or four oranges, but won’t make you feel full.
Watch The Ripeness
As mentioned, the sugar availability depends on the ripeness of the fruit. Choose firm peaches, slightly green bananas, and crisp pears rather than over-ripe, mushy options if you are trying to keep your GI intake low.
Use Fruit As a Sweetener
Instead of adding refined sugar to oatmeal or plain yogurt, mash raspberries or add peach slices. You get that delicious sweetness you crave along with the fiber benefit.
Pairing Your Fruit
When it comes to eating fruit, a general rule is never to eat it on an empty stomach or alone. Eating it alone can cause a rapid spike in blood sugar.
To help you have more stable blood glucose levels, pair your fruit with a protein and healthy fats. These take longer to digest, serving as a buffer for the fruit's sugar. As a result, it promotes a more gradual release of the sugar, preventing a blood glucose spike.
For example, pair your banana with peanut butter or your apple with Greek yogurt.
Tracking Your Blood Sugar Levels
Remember that every person has a different reaction to foods. A small apple might not spike a person’s blood sugar, but might affect another person significantly. The only way to know is to monitor your glucose levels using a glucose monitor device or, better yet, a continuous glucose monitor.
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Final Words
Living with diabetes requires a bit more mindful decision, but it doesn’t require deprivation. Fruit is part of a balanced diet that can support heart health and immune function. Try to choose low-GI options like berries and apples, control your portions, and pair your fruit with healthy fats or proteins.
Remember to constantly check your blood sugar levels to test how specific fruits or combinations affect you. And, if you are struggling to find a balance, speak with a healthcare provider.
Sources
Fateme Barforoush, et al. “The Effect of Tart Cherry on Sleep Quality and Sleep Disorders: A Systematic Review.” Food Science & Nutrition, vol. 13, no. 9, 1 Sept. 2025, https://doi.org/10.1002/fsn3.70923.
Harvard Health Publishing. “The Lowdown on Glycemic Index and Glycemic Load - Harvard Health.” Harvard Health, Harvard Health, 2 Aug. 2023, www.health.harvard.edu/diseases-and-conditions/the-lowdown-on-glycemic-index-and-glycemic-load.
Kozłowska, Aleksandra, and Aneta Nitsch-Osuch. “Anthocyanins and Type 2 Diabetes: An Update of Human Study and Clinical Trial.” Nutrients, vol. 16, no. 11, 1 Jan. 2024, p. 1674, www.mdpi.com/2072-6643/16/11/1674, https://doi.org/10.3390/nu16111674.
MedlinePlus. “Glycemic Index and Diabetes: MedlinePlus Medical Encyclopedia.” Medlineplus.gov, 3 Nov. 2022, medlineplus.gov/ency/patientinstructions/000941.htm.
Vahapoglu, Beyza, et al. “Recent Studies on Berry Bioactives and Their Health-Promoting Roles.” Molecules, vol. 27, no. 1, 24 Dec. 2021, p. 108, https://doi.org/10.3390/molecules27010108.
FAQs
Can I eat watermelon if I have diabetes?
Yes, you can eat watermelon, but with caution. Watermelon has a high GI, meaning that it hits the bloodstream faster. However, it has a low glycemic load per serving since it’s mostly water. If you are going to include it, stick to one cup of cubed watermelon and avoid eating it alone; pair it with a protein or fat.
Is canned fruit okay to eat?
Canned fruit is okay only if it’s packed in water. Avoid fruit that’s canned in “heavy syrup” or “light syrup” since these offer a significant amount of added refined sugars. And, if it’s packed in juice, try to drain it before eating.
How much fruit should I eat per day?
Most guidelines suggest eating 2 to 3 servings of fruit per day for people with diabetes. A serving is typically one small whole fruit, 1 cup of melon/berries, or ½ cup of canned fruit. However, consult with your healthcare provider for personalized recommendations.
