Before this century, there has never been a comparative study of diabetes diet between grain group and grain group.

At the end of last century, Nie, a scholar of traditional Chinese medicine, paid attention to the description of diabetes by Chen Shiduo, a famous doctor in Qing Dynasty, in Dialectical Ice Guide: "Eating makes you thirsty, especially when you are hungry." Nie believes that Chen Shiduo, a Chinese medicine practitioner in the Qing Dynasty, noticed that the symptoms of diabetic patients were alleviated after eating grains, and the clinical symptoms were more obvious when they were hungry. And began to patiently verify the effect of grain liberalization for a long time. In 2007, Dr. Nie Wentao publicly advocated the liberalization of staple food, arguing that China people should be eight percent full, just like normal health standards. Moreover, the first discussion of behavioral medicine is to release food. Nie's monograph Diet Training and Diabetes Rehabilitation was published by Jilin University in 2007. According to Nie's sampling survey, among 57 patients with diabetes symptoms such as thirst, sweating and fatigue, 45 patients' symptoms disappeared, 8 patients had no obvious change, and 4 patients continued to develop after the staple food was released and cereal was used as a snack. This shows that even if the psychological effect cannot be eliminated, it is completely correct to put down food. Dr. Nie Wentao also directly explained "a strange blood sugar curve" in the technical training for hospitals, which is the food protection curve.