Lychee has a GI value greater than 70, which belongs to fruits with high sugar content. GI value refers to the glycemic index, which is an indicator that reflects the degree of elevation of blood glucose in the body caused by the intake of food, of which greater than 70 is a high GI value food, 55-70 is a medium GI value food, and less than 55 is a low GI value food. Lychee GI value is greater than 70, belonging to the high GI value of food, suggesting that its sugar content is high. In addition, every 100g of lychee contains 16.6g of sugar, which can lead to fluctuations in blood sugar after intake. Therefore, people with abnormal glucose tolerance or diabetes are generally not recommended to consume lychee. Seek medical advice as soon as possible if you feel unwell.