People with diabetes should avoid foods high in sugar, fat, salt and starch, and should not drink alcohol.
High-sugar foods：
Diabetics should avoid high-sugar foods such as candy, chocolate, cake, ice cream, etc. These foods can cause a sharp rise in blood glucose, which is harmful to the health of diabetics.
High-fat foods：
Diabetics should limit fat intake and avoid high-fat foods such as fried food, animal offal, butter, etc. These foods increase blood cholesterol and triglyceride levels, raising the risk of cardiovascular disease.
High-salt foods：
Diabetics should limit salt intake and avoid high-salt foods such as pickles, salted fish, bacon, etc. These foods can raise blood pressure and increase the risk of cardiovascular disease.
High-starch foods：
Diabetics should avoid high-starch foods such as rice, noodles, and steamed buns. These foods are quickly converted into glucose by the body, causing blood glucose to rise.