Effect of intake order of rice, meat, and vegetables on postprandial blood glucose level in healthy young individuals

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  • 米飯，肉および野菜の摂取順が若年者の食後血糖値に及ぼす影響

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In Japan, type 2 diabetes mellitus is listed a major health concern that requires serious attention. Postprandial elevation of blood glucose levels is an early sign of the development of diabetes. In recent years, dietary methods such as vegetable-first or meat-first diets, where vegetables or meat is consumed before carbohydrate sources such as rice, have been attracting attention to suppress the increase in blood glucose levels after meals. In this study, we investigated the effect of the intake order of rice, meat, and vegetables on the increase in postprandial blood glucose levels in young healthy participants. We also compared the effects of triangular eating, a traditional Japanese diet, on postprandial blood glucose levels. Participants ingested a test meal consisting of three separate dishes of rice, vegetables, and meat in different orders on 7 different days. Subsequent changes in blood glucose levels were measured over 120 min. We demonstrated that eating meat before rice (meat-first diet) reduced postprandial glucose elevation compared with the reverse regimen. However, the advantages of eating vegetables before rice (vegetable-first diet) could not be confirmed. In addition, effects of triangular eating on postprandial glucose elevations were comparable to those of the meat-first diet. The meat-first diet or triangular eating may be a safe and effective dietary therapy to prevent diabetes.

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