![]() ![]() These two smaller sugar pieces are called glucose and galactose. Lactose is a large sugar molecule that is made up of two smaller sugar molecules. Milk also has other stuff like proteins, fat, vitamins, and minerals.īecause a lot of food items contain milk, lactose is found in many different foods like ice cream, cheese, and creamy soups and sauces, just to name a few. Milk is made up of water (mostly) and has a small amount of lactose. ![]() ![]() Lactose is a Sugar Found in Milkĭid you know milk has sugar? Well it does, and it’s called lactose! Both are usually inherited from our parents but in different ways. Some people can tolerate more lactose than others.īeing born not able to drink milk and losing that ability later in life both happen because of differences in our DNA. How bad the symptoms are and how long they last for depends on the amount of lactose the person ate or drank and the amount a person can tolerate. When people (or babies) drink milk but cannot digest it, they are likely to have uncomfortable physical symptoms like stomach pain and bloating, gas, diarrhea, and nausea. About 35% of the human population keeps being able to digest lactose after infancy/childhood. And much more commonly, babies are born able to digest lactose and keep the ability to drink milk as adults. Very rarely a baby can be born who can’t digest lactose. Pigs and people are pretty much the only mammals we know of where lots of adults can still drink milk. The most common situation for people (and most mammals) is that they are born able to digest lactose, a sugar in milk, and they lose the ability when they grow up. Even in places where it’s most common, only something like 1 in 60,000 newborns are born lactose intolerant. ![]()
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