Lactose is an important nutrient in mammalian milk. Lactose in breastfeeding diet is the most important source of energy for infants and young children. Lactose enters the body and is decomposed into glucose and galactose by the action of small intestinal lactose. The hydrolyzed galactose is a component of the brain and nerve tissue glycoprotein.
Loss of lactose or decreased activity can lead to malabsorption of lactose. Undigested lactose can be fermented by bacteria to form short-chain fatty acids such as acetic acid and propionic acid, and carbon dioxide and other gases, which can increase intestinal osmotic pressure and cause bowel sounds. Clinical manifestations such as abdominal pain, bloating, and osmotic diarrhea are called lactose intolerance.
Lactose intolerance is ubiquitous and is autosomal recessive, with 70% of the world's population having varying degrees of lactase deficiency. The incidence of lactose intolerance varies from race to age and is not affected by gender. Chinese people are high-risk populations of lactose malabsorption and lactose intolerance. The incidence of lactose deficiency in the Chinese Han population is 75%-95%, and the incidence of lactose deficiency in the ethnic minority population is 76.0%-95.5%, which is similar.We have the test for lactose intolerance.
The incidence of lactase deficiency in children in China has increased with age. It has been reported that the incidence of lactose intolerance and lactose malabsorption in children in China is the highest at 7 and 8 years old, reaching 87.6%, and 3 to 5 years old. 38.5%. Since the 1980s, infantile diarrhea caused by lactose intolerance has caused domestic concern, and lactose intolerance accounts for 46.9% to 70.0% of infantile diarrhea.
Children with lactose intolerance have clinical symptoms more than 30 minutes to several hours after ingesting a certain amount of lactose, which is characterized by gastrointestinal symptoms such as diarrhea, bloating, abdominal pain, bowel, nausea, vomiting, and increased anal exhaust. Infants and young children mainly diarrhea, typical feces are yellow thin paste or egg flower watery stool, can contain foam, with indigestible milk flaps, sour smell, intestinal anal exhaust, often in the exhaust urination Bring a small number of feces on the diaper.
Some children may cry and feel uncomfortable due to abdominal distension and colic, which may be relieved after defecation and exhaustion; a small number of children have vomited at the same time. Some children may not only have constipation due to intestinal dysfunction but also headache, inattention, memory loss, fatigue, muscle and joint pain, arrhythmia, mouth ulcers, itching, various symptoms to allergic reactions (such as eczema, asthma) and other systemic symptoms.
Patients with lactose intolerance are not necessarily infants and young children. Some people may have lactose intolerance after adulthood. If adults are lactose intolerant, there will be a series of uncomfortable after drinking milk. Symptoms, lactose intolerance can also affect adults, adults should know the symptoms of lactose intolerance. Adult lactose intolerance symptoms are diarrhea several times a day to more than 10 times. In severe cases, dehydration, acidosis, growth retardation, etc. can occur, and there is no fever. Adults with lactose intolerance should be treated promptly after the above symptoms appear.
Patients with lactose intolerance generally improve through diet therapy and cannot be cured at all. Lactose intolerant should be eaten with the grain. In general, lactose-intolerant people will have heavier symptoms when they are on an empty stomach, but when mixed, the lactose concentration of milk may be “diluted” in a given environment. The increase in lactose absorption and mechanical movement in the gastrointestinal tract can increase the rate of lactose absorption. If you eat some biscuits or bread before drinking or eating milk, it will reduce the venting and uncomfortable feeling.
If you drink milk powder, it is also a good idea to add some cereals to eat. In particular, some milk powders are generally subjected to high temperature and pressure during processing, and sucrose and other additives such as lactose or lactic acid bacteria are added. Lactose is partially decomposed and diluted, and the human body is more easily absorbed and utilized. Moreover, the content of lactose in the prepared milk powder is also easy to control and is more suitable for such a specific group of people.
The doctor recommends a small number of times in the diet. Every lactose intolerant exhibits a different response. Some people drink a cup (containing about 12 grams of lactose) and the milk rises and diarrhea; some people respond by drinking half a cup. That is to say, milk can be tolerated to a certain extent. Therefore, if a cup of milk is divided into two drinks or a small number of times can be resolved or no symptoms at all.
Drinking yogurt is also an effective way to improve the symptoms. Yogurt is produced by adding certain lactic acid bacteria, and the fermentation process causes 20-30% of the lactose in the raw milk to be decomposed into lactic acid. The protein and fat are also decomposed into small components, and the minerals beneficial to the human body such as calcium, iron, and zinc are also beneficial. Dissociated from large molecules, making it easier to digest and absorb, so it is most suitable for people who have abdominal belly snoring after drinking milk, and even lactose intolerance in diarrhea.
Add a piece of lactose or milk powder containing lactose. Lactose intolerance occurs because the body lacks lactose. If you eat milk, eating a piece of lactose can easily prevent uncomfortable symptoms because foreign aid lactose can also improve lactose digestion and absorption.
From the principle and performance of infant lactose intolerance, infant lactose intolerance is good for itself; as long as the baby's small intestine villi function is fully developed, it can secrete enough lactose to break down the digested lactose, naturally there will be no Lactose intolerance is manifested.
However, infants' gastrointestinal development is slower, and it takes longer for the baby to restore lactose intolerance. During this period, the infant's self-healing time of lactose intolerance is not possible because lactose intolerance cannot absorb breast milk or milk powder nutrition. It will be longer.
Since lactose intolerance wants to heal itself, and it takes a lot of nutrients plus time to heal; but lactose intolerance to the baby can not absorb a lot of nutrients, which will prolong the self-healing time of lactose intolerance, forming a death cycle. Therefore, infant lactose intolerance should not wait until the baby is self-healing. Adults can choose the correct lactose intolerance product for diet treatment.
In general, lactose intolerant need to make dietary adjustments through the right products.