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What fruits should not be eaten when blood sugar is high?

May 23, 2025 Source: Cainiu Health
Dr. Liu Feng
Introduction
The flesh of lychee is high in sugar content, primarily in the form of glucose, which is rapidly absorbed by the body after consumption, leading to a sharp increase in blood glucose levels within a short period. Even small amounts of lychee consumption may cause significant fluctuations in blood sugar levels among individuals with hyperglycemia, which is detrimental to disease control; therefore, strict restriction is necessary. 2. Longan: Whether fresh or dried, longan contains a concentrated amount of sugar and has a sweet, rich taste.

People with high blood sugar generally should avoid eating fruits such as lychee, longan, sugarcane, red dates, and jackfruit.

1. Lychee: The pulp of lychee contains high levels of sugar, primarily glucose, which is rapidly absorbed by the body after consumption, causing a significant and quick increase in blood sugar levels. Even small amounts of lychee can cause dramatic blood sugar fluctuations in individuals with high blood sugar, making it unfavorable for condition management. Strict restrictions are necessary.

2. Longan: Whether fresh or dried, longan contains highly concentrated sugar content and has a sweet, rich taste. Its glucose and sucrose content can rapidly elevate blood sugar levels. Excessive consumption may increase the burden on the pancreas. Individuals with high blood sugar should avoid direct consumption or choose sugar substitute products.

3. Sugarcane: Sugarcane is a typical high-sugar fruit primarily composed of sucrose, containing almost no protein or fat. It is high in calories and causes a rapid rise in blood sugar levels. Consumption leads to a sharp increase in blood sugar, making it a fruit that individuals with poor blood sugar regulation should completely avoid.

4. Red Dates: Fresh red dates rank high in sugar content among fruits, and dried red dates have even more concentrated sugar due to moisture loss. Consuming them significantly raises blood sugar levels, and their limited dietary fiber content cannot effectively delay sugar absorption. Individuals with high blood sugar should cautiously consume or only taste small amounts occasionally.

5. Jackfruit: Jackfruit pulp is extremely sweet, with a sugar content far exceeding most fruits, and is rich in sugars that are easily and quickly absorbed by the body. Consumption rapidly elevates blood sugar concentration, increasing metabolic burden. People with high blood sugar should avoid eating jackfruit to prevent blood sugar fluctuations.

Individuals with elevated blood sugar levels and diabetic patients should focus on overall balanced and diverse diets, choosing low-sugar fruits such as apples, pears, oranges, strawberries, and raspberries, while also controlling total calorie intake to maintain stable blood sugar levels.

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