How long it takes for food to be absorbed depends largely on which type of food it is. If it is a fluid or semi-liquid food, such as thin rice or rice soup, absorption is achieved in about half an hour or an hour, and an effective amount of blood glucose can be reached very quickly. If it’s a meat-based food, chances are it will take 3-4 hours or longer, with full absorption reached in 4-6 hours. If the food is plant fiber or green vegetables, it also reaches effective absorption in about 3-4 hours. In conclusion, how long it takes for food to be absorbed mostly depends on the type of food. Whenever possible, the diet should be based on light food, less greasy and fried food, and if you have poor digestive function, you need to pay more attention to the combination of work and rest, exercise, and enhance your physical fitness.