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Lactose intolerance is caused by a lessened ability or a complete inability to digest lactose, a sugar found in dairy products. [1] Humans vary in the amount of lactose they can tolerate before symptoms develop. [1] Symptoms may include abdominal pain, bloating, diarrhea, flatulence, and nausea. [1]
Lactose malabsorption is typical for adult mammals, and lactase persistence is a phenomenon likely linked to human interactions in the form of dairying. Most mammals lose the ability to digest lactose once they are old enough to find their own source of nourishment away from their mothers. [ 71 ]
Infection may cause a person to become lactose intolerant, so it is recommended to temporarily avoid lactose following an infection. [1] Resistance to treatment may occur in some patients. [1] Giardiasis occurs worldwide. [5] It is one of the most common parasitic human diseases. [3]
This is likely due to lactose intolerance, a condition making it hard to digest lactose, a sugar found in dairy products. Most newborns are able to produce lactase, an enzyme crucial for the ...
Humans are born with high levels of lactase expression. In most of the world's population, lactase transcription is down-regulated after weaning, resulting in diminished lactase expression in the small intestine, [22] which causes the common symptoms of adult-type hypolactasia, or lactose intolerance. [23]
Many adult humans lack the lactase enzyme, which has the same function as β-galactosidase, so they are not able to properly digest dairy products. β-Galactose is used in such dairy products as yogurt, sour cream, and some cheeses which are treated with the enzyme to break down any lactose before human consumption. In recent years, β ...
During these acute illnesses of the small intestine, the microvilli of enterocytes can be flattened or damaged, and since these are the dwellings of our lactase enzyme friend, these acute illness states can cause a lack of lactase enzyme, and result in temporary lactose intolerance, once the small bowel heals, they’ll be able to produce ...
Milk available in the market. Milk borne diseases are any diseases caused by consumption of milk or dairy products infected or contaminated by pathogens.Milk-borne diseases are one of the recurrent foodborne illnesses—between 1993 and 2012 over 120 outbreaks related to raw milk were recorded in the US with approximately 1,900 illnesses and 140 hospitalisations. [1]