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Lactose, or milk sugar, is a disaccharide composed of galactose and glucose and has the molecular formula C 12 H 22 O 11.Lactose makes up around 2–8% of milk (by mass). The name comes from lact (gen. lactis), the Latin word for milk, plus the suffix -ose used to name sugars.
Lactose intolerance does not cause damage to the gastrointestinal tract. [2] Lactose intolerance is due to the lack of the enzyme lactase in the small intestines to break lactose down into glucose and galactose. [3] There are four types: primary, secondary, developmental, and congenital. [1]
Lactase is an enzyme that some people are unable to produce in their small intestine. [2] Technology to produce lactose-free milk, ice cream, and yogurt was developed by the USDA Agricultural Research Service in 1985. [3]
However, the lactose is higher in straight-up milk and ice cream (which also contains potential other bloat-inducers like sugar or sugar substitutes), she notes.
Lactase persistence or lactose tolerance is the continued activity of the lactase enzyme in adulthood, allowing the digestion of lactose in milk. In most mammals , the activity of the enzyme is dramatically reduced after weaning . [ 1 ]
People with lactose intolerance can't digest lactose, a type of sugar found in dairy. When people with this common condition eat lactose-containing dairy, they'll often experience bloating, gas ...
“The intestines contain billions of bacteria,” Pall says. “There’s good bacteria and there’s not-so-good bacteria, and ensuring that we have the right types of good bacteria that promote ...
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 ...