How long does it take to eat food, digest and absorb it?

The digestion process of food is mainly to give preliminary chewing and mixing through the mouth, and then enter the stomach, and give preliminary dissolution under the action of gastric acid and gastrointestinal peristalsis, turning large particles into small particles, and then excreted into the duodenum into the small intestine.

The small intestine is the main place where nutrients are absorbed, first absorbing water and electrolytes, then proteins, fats, and finally converted into amino acids, and then excreted into the jejunum and large intestine. The jejunum and large intestine mainly absorb a large amount of water and a small amount of amino acids, as well as electrolytes and water, and finally excrete them from the body through the cecum, ascending colon and sigmoid colon. The digestion process varies depending on the type of food.

Most foods can be completely digested in about four hours, and there are many types of food, such as vitamins, calcium, magnesium and other minerals, as well as water, which are directly absorbed in the human gastrointestinal tract, so these objects do not need to be digested. In addition, foods such as starch are already digested in the mouth from the moment they enter the mouth, and the time it takes to digest and absorb them is about six hours. Some patients prefer to eat foods that are high in protein, and these foods break down much more slowly.

Eating protein and other foods often takes about 6-8 hours to fully digest and absorb, so these people will be more hungry. In addition, if you regularly eat fatty foods, especially fried foods or animal fats, these foods will take a long time to digest, and most of them take more than eight hours to be fully digested.

What you eat can be completely digested in 3-4 hours, and can even be completely excreted into the stomach cavity and into the duodenum.

Liquid and semi-liquid foods are easy to digest and can be completely digested in about 2 hours.

Food is already digested as soon as it enters the stomach and needs to be digested for 1-2 hours.

Dietary contraindications after meals:

1. Drive after meals.

After eating, due to the need for digestion, most of the blood is concentrated in the stomach, and the brain is in a state of temporary ischemia. Therefore, it is safer to drive 1 hour after eating.

2. Take a shower after eating.

Taking a bath after a meal is also an incorrect habit of living, taking a bath after a meal, the blood flow on the body surface will increase, and the blood flow of the gastrointestinal tract will decrease accordingly, thereby weakening the digestive function of the stomach and intestines, causing indigestion.

3. Loosen the belt after meals.

Many people like to loosen the belt after eating, so that although the stomach is comfortable, it will cause the intra-abdominal pressure to drop, forcing the stomach to sag, and in the long run, it may really suffer from gastric prolapse.

Food is digested and absorbed as soon as it enters the mouth.

We usually eat mixed foods, and we start to digest them from the time we eat them, and they will be digested in about 4 hours.

(1) The process of food digestion.

(2) Precautions for eating.

Strictly speaking, chewing food is already a process of digestion, and it starts to be digested as soon as you eat it, and the digestion time is different for different foods, carbohydrates take about two to three hours, and meat is digested in about four to five hours.

When the food reaches the stomach, the stomach acid begins to digest the food, which takes about four hours of continuous digestion to complete.

When you eat it, you start to digest it, and how long it takes to digest it depends on what you eat, and it takes ten minutes to digest everything in a few or three hours at most.

The water compound is about three hours, meat dishes in 4 to 5 hours, and fruits in hours. It is faster to digest food on an empty stomach.

1. Grain: hours - 3 hours. Liquid or semi-liquid cereals (e.g., porridge) take less time to digest, and foods that have been fermented and have no added fats (e.g., steamed buns, bread without fat) are easier to digest.

They have the highest digestibility in the body and can reach 98 .

2. Protein: hours - 4 hours. Liquid protein foods such as milk and soy milk are easier to digest, while protein-rich meats such as beef and chicken take 4 hours or more to fully digest.

3. Fats: 2 hours - 4 hours. The digestibility of fats is related to their content of lower fatty acids and unsaturated fatty acids, and the higher the content of these fatty acids, the easier they are to digest. Therefore, vegetable oils are more digestible than animal oils.

Food: Generally, it takes about three hours for food to digest, which is related to the type of food and the individual's digestive system.

Carbohydrate foods are digested and emptied within two hours. Fats generally take about 4 hours. The fruit is digested in 1-2 hours.

When food reaches the stomach, it slowly grinds and dissolves, travels to the small intestine to the large intestine, and is excreted from the body.

Foods with a lot of water can be digested in about 2 hours, greasy and hard foods can be digested in about 4 hours, but don't eat too much before going to bed, it's not good for the stomach, but you can drink a glass of milk, because it can help you fall asleep more easily, because it contains calcium, so it can protect your teeth, improve your immunity, and so on.

The emptying time of the stomach is about 4 hours, but the food must continue to be digested in the small intestine and will be expelled after the small intestine has absorbed the nutrients! Therefore, the time for food digestion and excretion = gastric emptying time (usually 3 hours) + small intestine absorption time (about 4 hours). But the time is different depending on the type of food!

Here's the introduction!

The digestion time of different types of food.

Fruits: 30 minutes for 1 hour, melon fruits (such as watermelon) are the shortest, while bananas are the longest.

Vegetables: 45 minutes for 2 hours, melon vegetables (e.g., winter melon) are the shortest, followed by nightshade vegetables (e.g., tomatoes, eggplant), then leafy vegetables (e.g., spinach, bok choy) and cruciferous vegetables (e.g., broccoli), and root vegetables (e.g., sweet potatoes, taro) take the longest to digest

Cereals: 1 hour 30 minutes 3 hours, liquid or semi-liquid cereals (such as porridge) take less time to digest, and foods that have been fermented and have no added fats (such as steamed buns, bread without fat) are also easier to digest.

Protein: 1 hour 30 minutes 4 hours, liquid protein foods such as milk and soy milk are easier to digest, while it takes 4 hours or more to fully digest protein-rich meats such as beef and chicken.

Fat: 2-4 hours, but we rarely consume fat alone, usually with vegetables or grains. If fats are ingested together with grains or protein foods, it will take longer to digest them, so foods such as cakes, which contain a lot of fats, proteins, and carbohydrates, will cause a large burden on the stomach and intestines, and it will take about 3 to 4 hours to fully digest.

It is about one hour for water to enter the human body and be discharged!

It usually takes about an hour, and the meat takes about four hours.

It's usually about 4 hours