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The main sugar found in milk
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Lactose
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Lactase
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Galactose
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Fructose
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Lactose is the main sugar found in milk. It is a disaccharide composed of glucose and galactose. Lactose is unique to mammalian milk and is broken down by the enzyme lactase in the small intestine. People who are lactose intolerant lack the enzyme lactase, leading to difficulty digesting lactose and experiencing symptoms such as bloating, gas, and diarrhea after consuming milk or dairy products.
