What is the effect of high glycemic index foods on the body?

High glycemic index (GI) foods are known to cause rapid spikes in blood sugar levels. This happens because these foods are quickly digested and absorbed into the bloodstream, resulting in a swift increase in glucose levels. When blood sugar rises rapidly, the body responds by releasing insulin to help transport glucose into the cells. This process can lead to fluctuations in energy levels; shortly after the spike, there may be a rapid decline in blood sugar, which can result in feelings of fatigue or hunger.

The notion that high GI foods significantly contribute to weight management or increase fiber intake is misunderstood. While some foods may be marketed as 'healthy', many high GI options are low in fiber and can contribute to weight gain if consumed in excess due to their caloric content and effects on hunger and satiety. Therefore, focusing on low to moderate glycemic index foods is often recommended for better blood sugar control and overall health.