这些粗粮可能比米饭还“升糖”

Core Insights - Many people consider consuming coarse grains as a healthy choice for controlling blood sugar, especially for those with high blood sugar or diabetes, but some coarse grains can actually cause blood sugar levels to rise more quickly than white rice or steamed buns [1] Group 1: High Glycemic Index Coarse Grains - Glutinous corn has a glycemic index (GI) of approximately 70-80, which is classified as high, leading to a faster increase in blood sugar levels compared to other grains [2] - Yellow millet porridge, particularly made from glutinous varieties, can raise blood sugar levels faster than white rice porridge, making it important for those with blood sugar issues to limit its consumption [2] - Baked sweet potatoes have a GI of 94, significantly higher than steamed ones (GI of 77), due to the conversion of some sucrose into faster-acting maltose during baking [2] Group 2: Factors Contributing to High Glycemic Response - The breeding of sweeter varieties of foods like sweet potatoes and pumpkins has resulted in higher sugar content and GI values compared to older varieties [3] - Overcooking grains increases the gelatinization of starch, leading to faster absorption in the intestines and a quicker rise in blood sugar [3] - Excessive processing, such as making mashed potatoes or grain pastes, removes dietary fiber that helps slow down sugar absorption, resulting in a doubled glycemic response [3] Group 3: Recommended Coarse Grains for Stable Blood Sugar - Whole grain cereals like oats, barley, and buckwheat have lower GI values compared to refined grains, aiding in better blood sugar control for diabetic patients [5] - Legumes such as red beans, green beans, and chickpeas have a milder GI, providing essential nutrients while avoiding excessive saturated fats and cholesterol [6] - Bran products, including oat bran and whole grain bread, are rich in dietary fiber, which helps slow digestion and sugar absorption, making them beneficial for diabetes management [7] - Germ foods like wheat germ and corn germ are nutrient-dense, containing vitamins, minerals, and healthy fats that support overall health, particularly for diabetic patients [7]