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The causes of Lactose Intolerance? Our History Of Gaining And Losing The Ability To Drink Milk — Medical Daily

Milk as well as other dairy products play an important role in a healthy balanced diet, but for some of the population, these products can lead to extremely unpleasant stomach issues. Here’s a run-down of what causes lactose intolerance, and why.

Lactose intolerance is the inability to digest lactose, the particular sugar in milk. It’s totally different from a dairy allergy, which involves an immune response against milk plus can result in far more dangerous signs and symptoms. In people with lactose intolerance, their bodies usually do not make enough of the enzyme lactase, which is used to break down lactose. Whether it’s not broken down, it doesn’t absorb into the bloodstream, and instead moves to the top intestines or colon, Medical News Today reported. Here, bacteria in the gut can react with the lactose, causing unpleasant symptoms.

Lactose intolerance can cause anything from disturbing gas to painful diarrhea when individuals eat dairy. These symptoms can differ, depending on the severity of an individual’s intolerance and how much lactose they ingested.

Read: Lactose Intolerant? Be Thankful, It might Save You From Certain Cancers

Certain dairy foods that have been fermented, such as yogurt and parmesan cheese, may not cause stomach problems. During the fermentation process, bacteria ingest lactose, which usually makes some products virtually lactose-free, Standing reported.

If you experience discomfort after consuming dairy products, you’re in the majority! About 65 percent of the world’s population has decreased ability to digest the particular enzymes in milk after childhood. In fact , the ability to digest this enzyme is actually the result of a single genetic mutation.

As babies, all of us produce lactase to allow us to break down the lactose in our mother’s milk. However , in most individuals, the body can make less lactose as they are weaned off milk and onto more food. There is an evolutionary reason for this — kids need to stop drinking dairy after a certain age so a mother has more milk and attention for future children, Slate reported. It’s a trait observed in almost all mammalian species.

However , about 10, 000 years ago, one easy genetic mutation allowed people to generate lactase forever, and respectively offered them the ability to drink milk through the entire rest of their lives without any uncomfortable gut problems. This gene distribute rapidly as a result, especially in regions that had a long history of depending on unfermented milk products as an important food source, the National Institute of Wellness reported. Today, about 80 percent of all Europeans have the ability to produce lactase throughout their entire lives, Slate reported.

Because of its genetic roots, primary lactose intolerance, the most common form of this disorder, tends to run in certain populations. For instance , genetic lactose intolerance is more common amongst individuals of African, Asian, or even Hispanic ancestry. It is also found in some populations in Southern Europe, The particular Mayo Clinic reported.

Of course , not all lactose intolerance is genetically based. In the case of secondary lactose intolerance, this problem arises when the small intestines produce less lactase following illness or an injury. This form of lactose intolerance is often found in those with Crohn’s disease and in those who have undergone certain cancer treatments.

See Also:

Whole Milk And Full-Fat Dairy May Help You Maintain Weight, Reduce Diabetes Risk

Can Dairy Be A Brand new Way To Treat Depression? Low-Fat Whole milk And Yogurt Linked To Lower Depressive Symptoms

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