Diet control is the primary measure to treat diabetes. Both type I diabetes and type II diabetes must be given regular diet treatment. This is because: improper diet or excessive intake of sugar from the digestive tract will increase blood sugar and aggravate the condition; Reasonable diet and food intake can reduce sugar from gastrointestinal tract and prevent hyperglycemia.

Reasonable diet therapy can reduce the burden of islets, make some functional islets gradually recover their functions, help correct metabolic disorders, and promote the recovery of blood sugar, urine sugar and blood lipid to normal levels.

Obese people can lose weight because of dietotherapy, while thin people can gain weight and maintain normal weight because of the improvement of dietotherapy.

For patients taking hypoglycemic drugs, diet therapy is beneficial to stabilize the dose and prevent blood sugar fluctuation.

Elderly patients with type 2 diabetes and obesity can often achieve certain curative effect only through diet control. Therefore, under the guidance of doctors, active diet control is the basis of good curative effect.