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Lactose intolerance is distinct from milk allergy, an immune response to cow's milk proteins. They may be distinguished in diagnosis by giving lactose-free milk, producing no symptoms in the case of lactose intolerance, but the same reaction as to normal milk in the presence of a milk allergy. A person can have both conditions.
This is an autosomal recessive disorder and infants that can’t break down lactose have trouble with breastmilk, and develop diarrhea starting from birth. Sometimes, even those with lactase-persistence can develop temporary lactose intolerance as a result of infection or inflammation in the small intestine.
Lactose can not be absorbed by the intestine and needs to be split in the small intestine into galactose and glucose by the enzyme called lactase; unabsorbed lactose can cause abdominal pain, bloating, diarrhea, gas, and nausea. [citation needed] In most mammals, production of lactase diminishes after infants are weaned from maternal milk.
Food allergies affect mostly young children, and approximately 90 percent of these allergies are caused by just eight foods: cow's milk, eggs, soy, peanuts, tree nuts, wheat, fish, and shellfish.
Secondary lactose intolerance results from injury to the small intestine, such as from infection, celiac disease, inflammatory bowel disease or other diseases. [43] [44] Developmental lactose intolerance may occur in premature babies and usually improves over a short period of time. [43]
Symptoms of food intolerance vary greatly, and can be mistaken for the symptoms of a food allergy. While true allergies are associated with fast-acting immunoglobulin IgE responses, it can be difficult to determine the offending food causing a food intolerance because the response generally takes place over a prolonged period of time.
You might have a well-balanced meal, but if it contains a group that one is sensitive to, it can lead to bloating." Moody adds lactose, which is found in milk and dairy products like yogurt and ...
Lactose intolerance is a condition in which people have symptoms due to deficiency or absence of the enzyme lactase in the small intestine, causing poor absorption of milk lactose. [ 123 ] [ 124 ] People affected vary in the amount of lactose they can tolerate before symptoms develop, [ 123 ] which may include abdominal pain, bloating ...