How Do I Know If I’m Lactose Intolerant?

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2. Distended Stomach

Most of us have experienced bloating at some point or another and it’s definitely not a nice thing to deal with. Our clothes feel tighter, sitting can be uncomfortable, and we’re just all around uncomfortable. Unfortunately, bloating is another side effect of lactose intolerance. It occurs when the there’s an increase in water and gas in the colon which causes distention which is basically just the gut walls stretching outwards. Think of it as a balloon!

The amount a person bloats doesn’t depend on how much lactose they consume, so you can suffer from a distended stomach even if you’ve had just a little bit of dairy. It all depends on sensitivity level. This symptom might cause other symptoms on this list like nausea and even vomiting.

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3. Diarrhea

Diarrhea isn’t a pleasant thing to talk about but it’s a harsh reality for someone who is lactose intolerant. Healthline defines diarrhea as “increased stool frequency, liquidity or volume.” The source also notes that it’s when someone passes more than 7-ounces in a 24-hour period.

Diarrhea occurs when there’s an increase in water in the colon which is why the stools have so much liquid content. “In the colon, microflora ferment lactose to short-chain fatty acids and gases. Most, but not all, of these acids are absorbed back into the colon. The leftover acids and lactose increase the amount of water that the body releases into the colon,” explains Healthline. The source also notes that in order for diarrhea to occur, the body must have consumed the equivalent of 3 to 4-cups of milk.

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4. Embarrassing Gas

Flatulence can be quite embarrassing and suppressing it will only cause serious discomfort. Unfortunately, it’s a common symptom for lactose intolerance. “The fermentation of lactose in the colon increases the production of the gases hydrogen, methane and carbon dioxide,” writes Healthline.

People who are lactose intolerant have microflora in their colon that is very good at fermenting lactose into acds and gases which results in embarrassing gas. The amount of gas varies from person to person, especially since every person’s microflora is different. It all depends on the “efficiency of the microflora, as well as the rate of gas reabsorption by the colon.

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5. Nausea and Vomiting

As we previously mentioned, bloating can cause a person to feel nauseous and even cause them to vomit which is why it’s listed as one of the symptoms of being lactose intolerant. According to Healthy Women, someone who’s lactose intolerant can feel ill anywhere from 30-minutes to two-hours after eating milk products.

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6. Gurgling Stomach

There’s nothing more embarrassing than a stomach that’s making gurgling noises. It can cause a few turned heads and for most of us, this happens when we’re hungry. But someone who’s lactose intolerant it’s because their intestines which are probably already filled with gas and water, writes Healthy Women, are trying to break down the lactose.

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7. Constipation

While most lactose intolerant sufferers will experience diarrhea, there are a few others who will have constipation. According to Healthline, constipation is characterized by “hard, infrequent stools, feelings of incomplete bowel movements, stomach discomfort, bloating, and excessive straining.” While it’s not commonly associated with lactose intolerance, it has been reported as a symptom.

Constipation occurs “as bacteria in the colon ferment undigested lactose, they produce methane gas,” writes Healthline. This slows down the digestion process, including how long it takes for food to pass through the gut which results in constipation.

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8. You’re Not an Infant

You might not have realized this ,but there are different types of lactose intolerance, some are present at birth, some into adulthood, while other develop because of damage to the small intestine. It would be extremely rare for someone to be born without any lactase at all, says Reader’s Digest.

The National Institute of Diabetes and Digestive and Kidney Diseases says that most lactose intolerances develop after the age of 2, while the U.S. National Library of Medicine points out that a lactose intolerance is not all that uncommon. In fact, the source states that about 30 million adults in the U.S. will develop a lactose intolerance by the age of 20.

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9. You’re of Certain Ethnicity

Certain ethnicities are more prone to being lactose intolerant than others. While we were all at one point fed lactase through our mother’s milk as a child, according to an article in the New York Times, humans only began digesting lactose as adults about 5,000 years ago. It all started with cattle herders in northern Europe who used it to survive. “Though genetics that allow for the presence of lactase in the body have spread in large portions of the Caucasian and East African populations, East Asian, South Asian, and other African populations have much higher incidences of adults experiencing symptoms of lactose intolerance,” writes Reader’s Digest.

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If you suffer from these symptoms, you might suffer from lactose intolerance. However, a diagnosis by will need to be made by your doctor using these tests before you can be labeled lactose intolerant or sensitive…

10. Lactose Tolerance Test

A lactose tolerance test is used to see how the body reacts when high levels of lactose are ingested. You’ll be required to drink a liquid that contains lactose and “two hours after drinking the liquid, you’ll undergo blood tests to measure the amount of glucose in your bloodstream,” explains Mayo Clinic. If levels don’t rise, then that means your body isn’t properly digesting and absorbing the lactose drink.

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11. Hydrogen Breath Test

A hydrogen breath test is the best and easiest way to determine whether or not a person is lactose intolerant. In order to have the test done, you will have to avoid consuming any food or drink the night before so that it can’t be confused with the next day’s results. You’ll breathe into “a balloon-like bag,” writes NHS, so the doctor can test how much hydrogen is present in the body.

You’ll then have to drink a lactose solution and test your breath every 15-minutes in the following hours to see if the level of hydrogen has increased. If it has, that means you’re lactose intolerant. “This is because lactose intolerance can cause the bacteria in the colon to produce more hydrogen than normal,” says NHS.

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12. Stool Acidity Test

This test isn’t as common and is mostly saved for adults or children who can’t undergo the other tests, says Mayo Clinic. Your health care professional will test the amount of lactic acid and other acids in a stool sample.

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