A low glycemic fruit is any whole fruit with a glycemic index (GI) of 55 or less on the 0-to-100 scale. Berries, cherries, apples, pears, plums, peaches, and most citrus fruits all qualify and raise blood sugar more slowly than high-GI options like pineapple or watermelon.
What “Low Glycemic” Actually Means
The glycemic index measures how quickly a carbohydrate-containing food raises blood glucose compared to pure glucose, which is scored 100. Foods are grouped into three bands:
- Low GI: 55 or less
- Medium GI: 56 to 69
- High GI: 70 or above
A low GI does not mean “no effect on blood sugar.” It means the rise is slower and flatter, which is easier on insulin demand and generally better tolerated by people with prediabetes, type 2 diabetes, or insulin resistance. For broader context on how diet fits into blood sugar management, see our diet and nutrition guide.
Fruits That Count as Low Glycemic
The numbers below are averages from the 2021 international GI tables. Individual produce varies by variety, ripeness, and growing conditions.
| Fruit | Typical GI | GI Category | Standard Serving |
|---|---|---|---|
| Cherries | 20 | Low | 1 cup |
| Grapefruit | 25 | Low | 1/2 medium |
| Blackberries | 25 | Low | 1 cup |
| Raspberries | 32 | Low | 1 cup |
| Strawberries | 40 | Low | 1 cup |
| Apple | 36 | Low | 1 medium |
| Pear | 38 | Low | 1 medium |
| Plum | 40 | Low | 2 small |
| Peach | 42 | Low | 1 medium |
| Orange | 43 | Low | 1 medium |
| Blueberries | 53 | Low | 3/4 cup |
| Kiwi | 52 | Low | 2 small |
| Green banana | 30 to 42 | Low | 1 medium |
Why Ripeness Changes the Number
Green, under-ripe fruit contains more resistant starch and pectin. As the fruit ripens, enzymes break these down into simple sugars. A firm green banana can have a GI around 30, while an overripe brown-spotted one can climb to 62. The same effect applies to mangoes, papayas, and pears. If you want the lowest GI, choose fruit that is ripe enough to be palatable but still firm to the touch.
Processing Always Pushes GI Up
Whole raw fruit sits at the low end of the GI range because the fiber matrix slows digestion. Processing disrupts that matrix:
- Juice removes most fiber; even 100% orange juice has a GI around 50 but drives glucose faster because you drink it in seconds.
- Dried fruit concentrates sugar per bite — raisins score 64, dates 42 to 55, but the carb load per handful rivals a full meal.
- Canned fruit in syrup adds sucrose on top of the fruit’s own sugars.
- Smoothies behave like juice once the cell walls are fully pureed.
The fix is simple: eat whole, raw fruit first and treat juice, dried fruit, and smoothies as occasional options rather than staples.
Glycemic Load: The More Useful Number
GI alone ignores how much fruit you actually eat. Glycemic load (GL) multiplies GI by the grams of available carbohydrate per serving and gives a real-world score. A watermelon has a high GI around 72, but one cup contains only 11 grams of carbs, so the GL is just 7 (low). A medium banana has a moderate GI of 51 but 27 grams of carbs, giving a GL of 13 (medium).
Rule of thumb:
- GL 10 or less per serving: low
- GL 11 to 19: medium
- GL 20 or above: high
How to Build a Blood-Sugar-Friendly Fruit Plate
- One serving at a time. A cup of berries, one medium apple, two small plums — not a fruit salad bowl.
- Pair it. Protein (Greek yogurt, cottage cheese, a hard-boiled egg) or fat (a handful of almonds, a tablespoon of nut butter) slows digestion.
- Eat whole fruit, not juice. Whole fruit carries its own fiber brake.
- Watch the dried stuff. Two tablespoons of raisins is a serving, not a bowl.
- Test your own response. If you use a CGM or glucometer, check 60 to 90 minutes after eating to see how your body handles a specific fruit.
Fruit and Diabetes Risk: What the Research Shows
Large observational studies, including the Nurses’ Health Study and the Health Professionals Follow-up Study, consistently find that higher whole-fruit intake is associated with lower risk of type 2 diabetes, while fruit juice is associated with higher risk. The ADA’s guidance on fruit echoes this: whole fruit, in moderate portions, belongs in a prediabetes and diabetes meal pattern.
If you have been told you have elevated blood sugar, understanding A1C levels and working with a registered dietitian on a personalized carb target usually matters more than banning any single fruit.
The Bottom Line
Any fruit with a GI of 55 or less counts as low glycemic, and the usual suspects — berries, cherries, apples, pears, plums, peaches, and citrus — all qualify. Ripeness, processing, and portion size matter as much as the raw GI number, so a small serving of firm whole fruit paired with protein or fat is almost always a safe choice. If you have prediabetes or diabetes, work with your care team to set a daily carb goal and fit whole fruit inside it; do not cut it out.
