Food order can shift short-term blood sugar and insulin responses after a meal
Eating the components of a meal in a specific order is the principle of meal sequencing. For example, foods with a low glycemic index, especially vegetables or salad, are eaten first, followed by carbohydrate-rich foods with a higher glycemic index, such as bread, rice, potatoes or pasta. This sequence is intended to limit the rise in blood sugar after eating and, according to experts in health…
Researchers at the German Diabetes Center investigated the impact of meal sequencing on short-term blood sugar and insulin responses. They analyzed 18 randomized controlled trials involving adults, focusing on the order in which foods are consumed during a meal. The study found that eating vegetables before carbohydrates led to a lower rise in blood sugar at 30 and 60 minutes after the meal.
However, after about 120 minutes, individuals who followed this order had higher blood sugar levels compared to those who did not. Similarly, insulin levels were initially lower but then rose more sharply in the later period. While these findings suggest that meal sequencing can influence the metabolic response to a meal in the short term, the overall effect on blood sugar levels is not sustained.
The study also indicates that the timing of blood sugar and insulin levels may change. Additionally, preliminary evidence suggests a potential impact on fasting blood sugar and long-term blood sugar levels (HbA1c), which is particularly relevant for people with type 2 diabetes. However, this finding is based on a single study of people with type 2 diabetes and has some methodological limitations.
The researchers emphasize that the observed benefits in fasting blood sugar and HbA1c levels cannot be definitively attributed to the order of foods alone, as the amount of vegetables consumed differed between the groups. Therefore, no comprehensive recommendation for meal sequencing can be made, especially for people with type 2 diabetes.
The studies had various limitations, such as small sample sizes, different types of vegetables, and sequences used. Most of the studies were conducted in Japan and involved young, healthy individuals. As individual responses to meal sequencing can vary across population groups, the findings may not be easily generalized. Experts emphasize that other dietary factors, such as calorie intake and appropriate calorie reduction for overweight individuals, also play crucial roles in managing blood sugar levels and the progression of type 2 diabetes.
Future research should focus on developing uniform measurement methods and including more participants with prediabetes, type 2 diabetes, and diverse population backgrounds to establish practical recommendations based on these findings.
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