Patients with high blood sugar can drink lemon water in moderation, but be careful not to add extra sugar. Lemon is rich in protein, vitamin C, iron ions and other nutrients, with the promotion of digestion, vitamin C supplementation and other functions. In addition, the sugar content of fresh lemons is relatively low, after brewing, the sugar will be diluted, high blood sugar patients drink some lemon water in moderation, usually does not have an impact on blood sugar. However, patients should note that drinking lemon water needs to be in moderation, because lemons contain citric acid, a large amount of lemon water, may cause gastrointestinal symptoms in diabetic patients. In addition, lemonade should not add extra sugar, high blood sugar patients drink will have adverse effects on the condition. It is recommended that diabetics pay close attention to their blood glucose levels and go to a regular hospital if they feel unwell.