Milk

Milk

Contents

  1. Introduction
  2. Do not drink milk on an empty stomach
    1. Diet on an empty stomach
      1. Milk vs. Water
      2. Milk vs. Bread
    2. Digestion on an empty stomach
  3. Lactose intolerance
    1. What is lactose intolerance?
    2. Who has lactose intolerance?
    3. Proper diet for lactose intolerance
  4. Drink milk at bedtime
    1. Sleep
    2. Calcium
    3. Fat
  5. Conclusion

Introduction

Milk is very familiar to Americans. It's not expensive. Everyone can offer to drink milk everyday. Milk is one kind of drink that is rich of nutrition. It contributes a lot to human's health. Many people drink milk improperly so that a lot of nutrition is wasted. Do people drink milk at the right time that milk can be fully absorbed? Why does somebody suffer from such a good kind of drink?

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Do not drink milk on an empty stomach

Diet on an empty stomach

Milk vs. Water

Water

Milk is not a good choice for people to drink as soon as they wake up. After a whole night sleep, everything people ate the day before was digested and went to the large intestines. Everything was gone except a little food debris still stayed in the stomach and the small intestines. Drink a glass of water is the best choice. It can clear the little food debris that stay in the stomach and the small intestines, and easily pass the most food debris which stays in the large intestines out of their body. It can also dilute the gastric juice so that reducing the stimulation to their stomach.

Milk vs. Bread

The nutrition of drinking a glass of milk on an empty stomach is not as good as having a piece of bread. Most people know that milk is rich of nutrition. Bread is one important source of starch and is made from wheat. Of course, that is not as much nutrition as milk. How can their nutrition be comparable when they are on an empty stomach? All of these refer to their digestive system.

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Digestion on an empty stomach

Digestive System

After one night sleep, there is nothing in the stomach. Without eating anything else, like something rich of starch, the fluid milk people drink moves very quickly through their stomach and intestine, and then pass out of their body. Milk is gone very fast. People know that milk is rich of protein. It should be digested by the pepsin in the stomach, and then be absorbed in the small intestine. Because it's fluid and on an empty stomach, it had buggered off before it had been totally digested and absorbed. In addition, there is too much gastric acid on an empty stomach that causes the protein denaturizing to precipitation. Nutrition is not easy to be absorbed by the stomach and the small intestine. So that causes violent indigestion and diarrhea. The nutrition of milk is wasted when it is drink on an empty stomach.

Milk is rich of high quality protein. The main function of this protein is to constitute human's new organization and patch the original organization. Milk is discharged very quickly from the stomach on an empty stomach. This precious protein is decomposed into heat by human body and then consumed. Protein can't play the role it should be. Contrarily, some undigested amino acid is passed into the large intestine before being totally absorbed by the small intestine. This protein and amino acid are decomposed and corrupted into some material that is harmful to human's body in the large intestine.

Everything people eat is digested in the stomach. After people eat something, this food combines with the pepsin, which is an enzyme produced in the stomach that splits proteins into peptones. Before people drink milk, people would better have something that is rich of starch, like bread, rice, snacks, cookies etc. combining some of these foods with milk, milk can stay longer in the stomach and have enzymolysis with gastric acid, so that the protein can be digested and absorbed very well.

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Lactose intolerance

Milk is one kind of rich nutrition drink, but there are quite a lot of people can't drink regular milk. If these people drink regular milk, they will be abdominal discomfort, nausea, flatulence, bloating, or diarrhea. Why do some people have these kinds of symptoms? These conditions are said to be lactose intolerance.

What is lactose intolerance?

Lactose intolerance is caused by a lack of lactase, which is an enzyme that produced in small intestine to break down lactose, a sugar found in milk product. Lactose can't be digested in the small intestine. Lactose goes into colon, and then it is fermented by the bacteria in the colon. Because of the fermentation, a lot of gas material and acetic acid are produced. They stimulate the mucosa of the intestine, so cause the distention of the abdomen, the abdominal rumbling, the abdominal pain even diarrhea. But, approximately only 30% of those lactose intolerance people get the symptoms list above. The severity of symptoms depends on the amount of lactose consumed and the amount of each one can tolerate. Although most people don't have those symptoms, they can't digest and absorb lactose from the milk like others who don't have lactose intolerance.

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Who has lactose intolerance?

Thirty to 50 million Americans (adults and children) are lactose intolerant. The disorder affects some populations more than others:

  • Seventy-five percent of all African-Americans and Native Americans are lactose intolerant.
  • Ninety percent of Asian-Americans are lactose intolerant.
  • Lactose intolerance is least common among people with a northern European heritage.

Approximately, only 30% people don't have lactose intolerance at all over world. Most people are lactose intolerance. Just differ on the tolerance. There are three groups of lactase deficiency: congenital lactase deficiency, secondary lactase deficiency, and primary lactase deficiency. Congenital lactase deficiency is very rare. It may relate to heredity. Secondary lactase deficiency is caused by a disease or condition and may be only temporary. Primary lactase deficiency is the most common. Primary lactase deficiency is the activity of lactase in the small intestine decrease as the age increase after weaning. The incidence of lactase intolerance is different on area and race. Most Chinese children start at 7~8 years old have lactase deficiency. People who are in American and European countries start at about 20 years old.

Lactase deficiency divides into lactase indigestion and lactase intolerance base on the lactose absorption. In order to avoid nonessential harm to human's health by drinking milk improperly, people would better check if they are lactose intolerance before people drink milk. There are two common tests used to measure the absorption of lactose in the digestive system. Lactose tolerance test, is measuring the person's blood glucose level after drinking a liquid that contains lactose. The other one is hydrogen breath test. After drinking a lactose-heavy drink, undigested lactose in the colon is fermented by bacteria. It results various gases, including hydrogen. When high levels of hydrogen are presented in the breath, the much lactose intolerance people have.

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Proper diet for lactose intolerance

Milk contains a lot of nutrition. It is very pity that people can't drink milk because of lactose intolerance. Although there is no treatment to cure lactose intolerance, symptoms are caused by lactose intolerance can be controlled with a proper diet:

Meal

  • Drink milk a little bit each time, and many times a day. So milk can be adapted gradually. Different people have different situation. People design how much milk people drink each time based on how much lactose people can tolerate. People can increase the quantity and decrease the number of times after people are suitable. It can also stimulate and enhance the intestine mucous membrane to synthesis lactase, and get rid of lactose intolerance gradually.
  • Do not drink milk on an empty stomach, and be sure to have something rich of starch, such bread, cracker, etc. Have milk with food can dilute the lactose, so that decrease the symptoms of lactose intolerance.
  • People can drink sour milk instead of regular milk. Sour milk is fermented milk by adding lactobacillus. During fermentation, 20%~30% of lactose is decomposed. Protein and fat are decomposed, too. So the lactose tolerance can tolerate sour milk.
  • Have lactase before drinking milk.

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Drink milk at bedtime

It's really good for people to drink milk before sleep. People can have a good night's sleep, and have a healthier body by drinking milk before sleep. It's good for people to grow their bone. Some people know all these good things, but they would rather not get fat than get a little healthier. Will people get fat much easier by drinking milk before sleep?

Sleep

Sleep

Lack of sleep is a health problem. Some people can't get a good night's sleep. They either can't fall asleep or can't get high quality sleep. When they can't get sleep, they will think of sleeping pills. Do they try to drink a glass of warm milk before sleep? It's reported that milk contains two kinds' hypnotic materials: one is L- tryptophan, which tells the brain to sleep; the other one is morphine, which makes people feel calm. People who experience symptoms of insomnia can try to drink milk instead of sleeping pill at bedtime, but do not overheat milk-37~38 celcius degree is the best. Otherwise, milk's nutrition will be reduced a lot.

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Calcium

Build Your Bone

Milk is a good source of calcium that may help prevent brittle bone, especially drink at bedtime. The body gets calcium in two ways. One is by eating foods that contain calcium. The other way is by pulling it from bones. This happens when blood levels of calcium drop too low. Calcium in milk is easily absorbed by body. 99% of the calcium is stored in human's bones and teeth. Only 1% is found in the blood and other tissues. The calcium from dinner is almost absorbed before sleep. Drink milk before sleep, calcium in the milk can be absorbed slowly into blood. So that blood levels of calcium won't be too low to get calcium by pulling it from bones. It helps prevent brittle-bone disease. Also, calcium in milk can eliminate nervous mood. It's good for people to drink milk at bedtime.

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Fat

There is just 3.4%~3.8% of fat in whole milk. That's not much fat. Even people drink two cups of milk everyday, the total fat people absorb just about 17~19 grams. Actually, a normal person needs 50~80 grams fat to provide enough heat for human body everyday. So, two cups of milk won't pose the threat to their body weight. If people are worried about getting fat by drinking at bedtime, people should decrease their dinner to avoid absorbing extra heat. Drink low-fat or non-fat milk is not as good as whole milk, because there are several liposoluble vitamins in fat, while people skim fat from milk, these vitamins will lose---milk's nutrition decrease. Drink whole milk and do more exercise is a good idea to avoid getting fat.

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Conclusion

Milk is really good for people. It's rich of nutrition, like protein, vitamins, calcium, etc. it helps people to build a more healthy body, and give people energy. But, drink milk in the right time is very important. Also, people need to know how their body gets along with milk. So that people can absorb as much nutrition as they can from milk and don't need to suffer from drinking milk.

On an empty stomach, milk flows every quickly through human's stomach, small intestines, and large intestines. The nutrition of milk is not absorbed by the small intestines. Some of these decompose and corrupt into something that is not good to human's body in the large intestine. The other nutrition is past out of the body. Some people say, "Drink milk on an empty stomach just like take a poison." That's because of lactose intolerance. They can't produce enough lactase to digest lactose. Lactose is fermented by the bacteria in the colon, and a lost of gas material and acetic acid are produced. They stimulate the mucosa of the intestine, so people feel like take a poison. Drink milk at bedtime can avoid brittle bone and get good sleep. Because milk is a good source of calcium, and contains two kinds' hypnotic materials: L- tryptophan and morphine.

Everything people eat and then pass out of their bodies. During this period, their bodies absorb nutrition. The others are food debris which is useless and will be past out of their bodies. This is what the digest system work. Not everything people eat can get along with their bodies, and sometimes people can't totally absorb the nutrition from their food.

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Reference

got milk?
China News
Yunnan Site
CNN interactive
21 Food Commerce
Medical Education
Personal Library 360 doc
Harvard School of Public Health
Beijing Research Institute for Nutritional Resources
National Digestive Diseases Information Clearinghouse