Whether eating hazelnuts will cause elevated blood sugar, different people react differently, mainly including patients with abnormal blood sugar and healthy people. Healthy people eating hazelnuts blood sugar will not rise, will remain within the normal range; diabetic patients and patients with abnormal glucose metabolism, eating too many hazelnuts will lead to elevated blood sugar. Hazelnut contains about 14% -16% of carbohydrates, containing fat-like substances accounted for about 50% -55%, containing protein accounted for about 15%, dietary fiber accounted for about 9.7%, but also contains a large number of vitamins, folic acid, calcium, magnesium, niacin and so on. Due to the high carbohydrate content, patients with abnormal blood sugar are prone to elevated blood sugar if they eat too much. In addition, due to the high content of fats and oils, energy is provided too much, patients are also prone to dyslipidemia. If diabetic patients want to eat hazelnuts, it depends on whether their blood sugar control is up to standard, if the blood sugar control is not up to standard, it is recommended to eat less hazelnuts or not eat hazelnuts. If the blood sugar control is up to standard, you can eat a few hazelnuts in small quantities between meals. Eating hazelnuts in the general population will not cause an increase in blood sugar. Although hazelnuts contain 14%-16% carbohydrates, insulin is secreted on demand in normal people, and with the continuous intake of food, insulin will be secreted continuously, so that blood sugar is maintained in a relatively stable state. Generally fasting blood glucose is maintained at 3.9-6.1 mmol/L, and 2-hour postprandial blood glucose is less than 7.8 mmol/L.