Does Chinese yam lower or raise blood sugar?
Disease description:
My brother-in-law went to the hospital for a blood sugar test and was found to have elevated blood sugar levels. The doctor recommended that he eat more Chinese yam (Dioscorea opposita). I would like to ask, does Chinese yam lower or raise blood sugar levels?
Doctor's answer (1)
Dr. Yang Ziqi
As a common food ingredient, there is some controversy regarding the effect of Chinese yam (Dioscorea opposita) on blood glucose levels. Its hyperglycemic and hypoglycemic effects can be analyzed from the following aspects:
Chinese yam contains a certain amount of carbohydrates, and the starch in it can be converted into glucose in the human body, which may lead to an increase in blood glucose levels. Overconsumption of Chinese yam, especially when it is used as a staple food or consumed in large quantities, may significantly raise blood glucose levels. However, certain components in Chinese yam, such as plant polysaccharides, can delay the rapid rise of postprandial blood glucose. For individuals with high blood sugar, moderate consumption of Chinese yam may help in managing blood glucose levels.
Chinese yam contains various nutrients, such as mucilaginous protein, vitamins, and trace elements, which may have blood glucose-lowering effects under certain conditions. These nutrients can also provide essential substances and energy for the body after being absorbed.
Chinese yam is also rich in dietary fiber, which can increase satiety and slow down the digestion and absorption of food in the gastrointestinal tract, thus helping to control postprandial blood glucose levels. In addition, attention should be paid to cooking methods, avoiding high-fat cooking techniques such as frying, in order to maintain stable blood glucose levels.
The effect of Chinese yam on blood glucose is bidirectional; its glycemic effect is related to the amount consumed. Moderate consumption and appropriate cooking methods are beneficial to health.
