Online discussions about food and health have focused on cooking, chilling, and reheating foods such as rice, pasta, and potatoes. This topic became popular in recent years on social media and nutrition websites, especially in North America and Europe. People shared claims that this method may help control weight and blood sugar levels. The idea comes from a scientific process called retrogradation, which happens when cooked starch cools. Starch gives energy, but cooked starch is digested fast and can raise blood sugar.

When starch cools, part of it becomes resistant starch, which is harder to digest. Studies found that this can slow digestion and help prevent sudden increases in blood sugar after meals. Experts explained that the number of calories does not change much, but the body processes the food more slowly. New tools, such as glucose monitors, help researchers study these effects. However, the results depend on the type of food and eating habits. Scientists say this method works best with balanced meals and healthy lifestyles, not as a single solution.