Low glycemic fruits are those scoring 55 or below on the glycemic index, a scale that measures how quickly a food raises blood sugar. Most whole fruits fall into this category, which may surprise people who avoid fruit because of its sugar content. Cherries, grapefruit, and berries sit at the bottom of the scale (GI in the 20s and 30s), while fruits like bananas and grapes land closer to the cutoff but still qualify.
How the Glycemic Index Works
The glycemic index ranks foods from 0 to 100 based on how fast they raise blood glucose compared to pure glucose, which sits at 100. Foods scoring 0 to 55 are considered low GI, 56 to 69 are medium, and 70 or above are high. A lower number means a slower, more gradual rise in blood sugar after eating.
Two things make most whole fruits low on this scale. Fiber, especially the soluble kind found in the flesh and skin of fruits, physically slows down how fast sugar gets absorbed in your intestines. Natural organic acids in fruit do the same thing. Research on kiwifruit found that fiber and organic acids each contributed equally to reducing the blood sugar response, both working by slowing absorption rate rather than reducing total sugar content.
Low Glycemic Fruits and Their GI Values
Here are common fruits that score 55 or below, listed from lowest to highest GI:
- Cherries: 22
- Grapefruit: 25
- Prunes: 29
- Raspberries: 30
- Apples: 36
- Pears: 38
- Blueberries: 40
- Strawberries: 40
- Peaches: 42
- Oranges: 45
- Grapes: 46
- Kiwi: 47
- Bananas: 48
A few patterns stand out. Berries as a group are consistently low, clustering around 30 to 40. Citrus fruits also perform well, with grapefruit scoring a remarkably low 25 and oranges at 45. Stone fruits like peaches and cherries tend to land in the low-to-mid range.
Berries Are Consistently the Lowest
If you’re looking for the fruits that will raise your blood sugar the least, berries are the most reliable choice. Raspberries come in at 30, while blueberries and strawberries both score 40. Beyond their low GI, berries are also relatively low in total carbohydrates per serving compared to denser fruits like bananas or grapes, which means the total sugar load hitting your bloodstream is smaller in addition to arriving more slowly.
Citrus Fruits Score Lower Than Most People Expect
Grapefruit at 25 is one of the lowest-GI fruits you can eat. Oranges vary depending on the source, with values reported anywhere from 35 to 52, but they consistently land in the low category. The acidity in citrus likely plays a role here, since organic acids in fruit slow glucose absorption in the gut. If you find grapefruit too tart on its own, even a standard navel orange is a solid low glycemic choice.
Ripeness Changes the GI Significantly
The same fruit can have a very different glycemic index depending on how ripe it is. A 2025 study measured the GI of several fruits at different ripeness stages and found that ripe fruits had GI values ranging from about 13 to 36, while overripe versions of the same fruits jumped to 29 to 58. The most dramatic example was banana: a ripe sweet banana had a moderate GI, but a very ripe one climbed to 58, pushing it out of the low category entirely.
Not all fruits are equally affected. Apples maintained a low GI regardless of ripeness stage, and ripe mango scored a surprisingly low 29. But as a general rule, the softer and more spotted a fruit becomes, the more its starches have converted to simple sugars, and the faster those sugars will hit your bloodstream. If you’re choosing bananas, picking ones that are yellow with minimal brown spots will keep the GI lower than waiting until they’re very soft.
Whole Fruit vs. Juice
How you consume fruit matters as much as which fruit you pick. Fruit juice removes most of the fiber that slows sugar absorption, and it passes through your digestive system much faster than whole fruit. Harvard researchers found that while the glycemic index of whole fruits didn’t strongly predict diabetes risk, the high glycemic index of fruit juice was linked to increased risk. Blending fruit into smoothies falls somewhere in between: the fiber is still present but has been broken down mechanically, so it may not slow absorption as effectively as chewing whole fruit.
Dried fruit is another case worth knowing about. Prunes score a low 29, and dates come in at 42, both still in the low GI range. But dried fruit is much more calorie-dense per bite than fresh fruit, so the total amount of sugar you consume in a handful of dried dates is far higher than in a handful of fresh berries, even if the rate of absorption is similar.
Why GI Alone Doesn’t Tell the Full Story
The glycemic index measures the speed of blood sugar rise, but it doesn’t account for how much carbohydrate you’re actually eating in a normal serving. That’s where glycemic load comes in. Glycemic load factors in portion size, giving a more realistic picture of what happens when you eat a typical amount of a food. Watermelon, for instance, has a high GI (around 72) but a low glycemic load because a serving is mostly water and contains relatively little carbohydrate.
For most whole fruits eaten in normal portions, the glycemic load is low to moderate. This is one reason nutrition guidelines consistently recommend eating whole fruit even for people managing blood sugar. The combination of fiber, water content, and natural acids in fruit creates a very different metabolic experience than eating the same amount of sugar from processed foods, even when the GI numbers might look similar on paper.
Practical Tips for Choosing Low GI Fruits
Stick with berries, citrus, apples, and pears as your everyday go-to options if keeping blood sugar steady is a priority. These consistently score in the 25 to 45 range and are widely available year-round. Eat fruit whole rather than juiced, and pair it with a source of protein or fat (like nuts or yogurt) to slow digestion further.
Choose fruit that’s ripe but not overripe, particularly for bananas and tropical varieties where ripeness has the biggest impact on GI. Frozen fruit is a fine alternative to fresh since freezing doesn’t meaningfully change the glycemic index, and frozen berries are often cheaper than fresh ones out of season. If you eat canned fruit, choose varieties packed in water or their own juice rather than syrup, which adds sugar without any of the fiber that keeps the GI low.