Lactose intolerance

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Written by Huang Gang
Gastroenterology
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Does lactose intolerance definitely not lead to weight gain?

Lactose intolerance does not necessarily affect body weight. Lactose intolerance merely causes symptoms like diarrhea, abdominal pain, and bloating when consuming regular formula or cow's milk. If one consumes hydrolyzed formula or lactose-free milk powder, these symptoms, such as diarrhea, do not occur, and nutrients can be fully digested and absorbed. By ensuring adequate nutrition, this can lead to weight gain and obesity, rather than causing a person to be underweight.

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Written by Yan Xin Liang
Pediatrics
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What should I do if the baby is lactose intolerant?

If the baby is lactose intolerant and does not have frequent bowel movements and it does not affect their growth and development, then no special treatment is needed. If there is frequent diarrhea and slow weight gain, then an adjustment in diet is necessary. If there is significant acute diarrhea accompanied by dehydration, we should initially rehydrate the infant either intravenously or orally to correct the dehydration. At the same time, you can start with some lactose-free formula and, after the diarrhea stops, gradually increase the amount of breast milk or other formulas based on the child's condition. Regardless of whatever food substitute is used, the overall principle is to not decrease the nutritional needs of the child. As solid foods are introduced and breast milk or cow's milk is decreased, diarrhea will gradually cease. If diarrhea does not subside, oral lactase enzyme preparations can also be provided to supplement lactase enzyme therapy.

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Written by Quan Xiang Mei
Pediatrics
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Can infant lactose intolerance cause bloody stools?

When infants experience lactose intolerance, there is a possibility of bloody stools. With lactose intolerance, infants will exhibit symptoms such as an increased frequency of bowel movements, diarrhea, and bloating. If the frequency of bowel movements is particularly high, for instance more than ten times, or even more, especially over a prolonged period, the gastrointestinal function of the infant is not very perfect. An increase in bowel movements can exacerbate damage to the gastrointestinal mucosa, potentially leading to bloody stools. Additionally, when the frequency of bowel movements is very high, it could lead to damage to the perianal skin, which might also result in bloody stools. Or, when an infant has lactose intolerance, if they are also suffering from other viral or bacterial infections in the gastrointestinal tract, the likelihood of bloody stools may increase. Therefore, if we consider that an infant has lactose intolerance, it is crucial to promptly add lactase for treatment and to switch to a different formula for oral administration.

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Written by Wu Hai Wu
Gastroenterology
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What kind of milk should adults with lactose intolerance drink?

If an adult is lactose intolerant and allergic to drinking milk, they must drink milk that has undergone some special treatment. If it is not specially treated, drinking it can easily cause diarrhea. Diarrhea from drinking milk may also be due to an allergy to a component of the milk. If that is the case, it is necessary to improve allergen detection and try to avoid drinking milk. If diarrhea is caused by poor digestion in the gastrointestinal tract, some medications that regulate intestinal flora can be used for supportive treatment.

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Written by Zhang Xian Hua
Pediatrics
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Symptoms of infant milk powder lactose intolerance

The symptoms of infant milk formula lactose intolerance typically manifest in the following areas: Firstly, the most direct symptom is abnormal stool in infants, which looks poorly digested with more milk curds, and this is the most common direct symptom. Secondly, the baby may experience increased gastrointestinal gas, bloating, abdominal pain, leading to restless sleep and irritability. Furthermore, the baby may exhibit a decreased appetite and varying degrees of vomiting. Of course, most cases of infant lactose intolerance occur after an intestinal viral infection, so there may also be symptoms related to viral intestinal infections.

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Written by Wu Hai Wu
Gastroenterology
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How many times a day does lactose intolerance cause diarrhea?

Patients with lactose intolerance can have multiple bowel movements per day after consuming milk; a mild case can result in 3-4 bowel movements, while severe cases might lead to dozens, potentially causing dehydration and electrolyte imbalance. For lactose-intolerant patients who need to consume milk, it must be specially treated beforehand. Additionally, if diarrhea is caused by poor digestion in the gastrointestinal tract, certain medications that adjust the gut microbiota can be used to aid digestion, such as Bifidobacterium triple viable bacteria and Bacillus cereus, etc. If the diarrhea is caused by allergies, allergen testing should be conducted. (Please use medication under the guidance of a doctor.)

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Written by Wu Hai Wu
Gastroenterology
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Can massage therapy adjust lactose intolerance?

Lactose intolerance cannot be managed through massage, and patients with lactose intolerance still need to take appropriate treatment measures to eliminate symptoms and avoid nutritional deficiencies. For primary lactase deficiency, it is advocated to reduce lactose intake, and for congenital lactase deficiency, lifelong lactose abstention is necessary. However, for patients with secondary lactose intolerance, treatment should be based on the underlying disease. For example, if Crohn's disease has caused secondary lactose intolerance, treatment with medications like mesalamine or sulfasalazine salicylate is necessary. (Please use medications under the guidance of a doctor.)

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Written by Wu Hai Wu
Gastroenterology
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What should I do if lactose intolerance makes me feel like vomiting?

People with lactose intolerance often feel nauseous and should avoid drinking milk. If they must drink milk, it needs to undergo special treatment first. Consuming untreated milk can lead to diarrhea in lactose-intolerant individuals, and severe cases may result in dehydration and electrolyte imbalance. Additionally, those with lactose intolerance should also check for any milk allergies or diarrhea caused by indigestion. It is essential to conduct allergen tests and, if necessary, take oral medication to regulate the digestive system.

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Written by Tong Peng
Pediatrics
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Do infants with lactose intolerance need to switch to a different formula?

Whether to switch formula for infants with lactose intolerance should be assessed based on the specific condition of the baby. If the baby's symptoms of lactose intolerance are mild, they can be managed by adding lactase and probiotics. However, if the baby has had diarrhea for a long time, frequent bowel movements, and also shows signs of reduced urine output, decreased skin turgor, and lethargy, it indicates a more severe dysfunction in the digestive system. In this case, it is necessary to switch to lactose-free formula to prevent exacerbation of gastrointestinal dysfunction. It is also important to pay attention to the baby's food hygiene and hand hygiene in daily life, especially during the peak season of diarrhea in autumn. It is advisable to get vaccinated in advance to prevent the transmission of other digestive system diseases.