What Causes Lactose Intolerance? Exploring The Science

What Causes Lactose Intolerance? Exploring The Science

Key Takeaways:

  • Understand Lactose and Lactase: Learn how the lactase enzyme breaks down lactose and why some people cannot digest lactose effectively.
  • Explore Types and Symptoms: Recognize the different forms of lactose intolerance and the symptoms that may occur after consuming dairy.
  • Effective Management Tips: Discover practical tips for lactose intolerance, from choosing lactose-free products to using lactase supplements.

 

It’s part of life.

Lactose intolerance is a common digestive condition affecting billions of people. It occurs when the body can’t properly digest lactose—the sugar in milk and dairy products—because it lacks enough of the enzyme lactase.

At DairyPill, we offer one of the most vital lactase enzyme supplements on the market. Designed to make dairy enjoyment easy and worry-free, DairyPill empowers those with lactose intolerance to wave goodbye to discomfort without giving up their favorite foods.

In this piece, we’ll explore the science behind lactose intolerance, explore the different types, and discuss effective management strategies.

 

What Is Lactose? 

Lactose is the unique sugar found in milk and dairy products, specifically a disaccharide (that’s fancy talk for “two sugars in one”). It’s made up of glucose and galactose, a dynamic duo that provides energy and nourishment — especially for little calves and, of course, human babies, who rely on lactose during their early stages of development. To digest this dairy delight, our bodies first need to transport lactose to the small intestine, where it’s broken down for easy absorption. You’ll find lactose in milk and creamy favorites like cheese, yogurt, and some processed treats that sneak in a dash of milk or whey.

If lactose leaves you feeling less than “udderly” fantastic, it's time to make dairy digestion a breeze with the proper support. Peruse our top lactose intolerance pills to keep you “moo-ving” comfortably after enjoying your favorite dairy treats!

 

How The Body Processes Lactose

When dairy delights like milk or cheese enter the digestive system they head straight to the small intestine for processing. Lactase — our very own enzyme "moo-ver and shaker" — gets to work here. Lactase breaks down lactose into two simpler sugars, glucose and galactose, which are ready for absorption and provide energy. For most people, this process allows them to enjoy dairy easily. But for those with low lactase levels, lactose doesn’t get broken down and instead takes a detour to the large intestine. There, it meets friendly bacteria that start fermenting it, which can lead to gassy, bloated “moo-schief” typical of lactose intolerance.

 

How The Body Processes Lactose

 

The Role Of Lactase Enzymes In Digestion

Lactase enzymes are the “cream of the crop” when digesting lactose. Produced in the small intestine's lining, this enzyme breaks down lactose into easy-to-absorb sugars, making it a “moo-st” for comfortable dairy digestion. Lactase is especially active in infancy when milk takes center stage in our diets. But as we head into adulthood, lactase production often declines, particularly in cultures where dairy isn’t a dietary staple. When lactase levels dip, lactose can’t be broken down as easily, making its way to the large intestine and setting off some uncomfortable symptoms. In short, lactase is critical to happy lactose digestion; when it’s lacking, lactose intolerance can make some seriously unideal moo-ves within your body. 

 

Types Of Lactose Intolerance

Lactose intolerance isn’t a “one-cow-fits-all” situation — it has several forms, each with a unique cause. Let’s break it down:

 

Primary Lactose Intolerance

The most common type, primary lactose intolerance, happens when lactase production naturally reduces out over time. This is especially common in places like East Asia, where dairy isn’t a diet staple. As people age, lactase production declines, making dairy harder to digest.

 

Secondary Lactose Intolerance

This type is temporary and often caused by a digestive illness or injury to the small intestine, like an infection or conditions such as celiac disease. Once the issue heals, lactase production can bounce back, bringing some dairy relief.

 

Congenital Lactose Intolerance

This rare type is present from birth due to genetics. Babies with congenital lactose intolerance are born without the ability to produce lactase. So, they need careful dietary adjustments right from the start to ensure they stay well-nourished without lactose.

 

Developmental Lactose Intolerance

This type is found mostly in premature babies and occurs when the small intestine hasn’t fully developed its lactase production. As the baby “moo-ves” toward full-term development, lactase levels typically increase, making this intolerance temporary.

 

Symptoms Of Lactose Intolerance

Lactose intolerance can bring on a “moo-dy” mix of symptoms that typically show up about 30 minutes to 2 hours after chowing down on dairy. These symptoms range from mild to more severe, depending on how much lactose was consumed and how much lactase is on duty. Here’s the scoop:

  • Bloating: That “full-to-the-brim” feeling in your belly is due to undigested lactose “cheesing” it up in the colon, producing gas that causes swelling.
  • Gas And Flatulence: When lactose ferments, it creates a cocktail of gasses like hydrogen and methane, leading to a bit more “moo-sic” from the digestive system.
  • Diarrhea: Undigested lactose draws water into the intestine, resulting in loose stools — an nconvenient outcome.
  • Stomach Pain And Cramps: The buildup of gas and movement in the gut can bring on uncomfortable cramps, leaving you feeling uncomfortable. 
  • Nausea: For some, especially after a hefty serving of dairy, a wave of nausea may follow, making that milkshake seem less magical.

 

Managing Lactose Intolerance

Balancing dairy enjoyment and symptom control is critical for managing lactose intolerance. Here are a few strategies to help keep your digestion happy:

 

Lactase Supplements

Consider lactase supplements for your dairy cravings. A quick pill before indulging can make all the difference, helping your body digest lactose and keep the moo-schief at bay.

Don't let lactose put a damper on your dairy dreams! With our 'No-Gassy-Days' starter kit, you’ll have everything you need to enjoy dairy easily. Prep your body for everything creamy and delicious here at DairyPill.

 

Lactose-Free And Low-Lactose Foods

These days, the dairy aisle is packed with lactose-free goodies, from milk to cheese to yogurt. These genius options let you enjoy the creamy goodness without the digestive drama.

 

Limit Dairy Intake

Less can be more! Some people find that grazing on small amounts of lactose throughout the day is easier on the system than diving into a dairy feast.

 

DairyPill

 

Probiotics And Fermented Dairy

Fermented favorites like yogurt and kefir contain probiotics and often contain less lactose. For some, this makes them easier to digest, giving them a probiotic mood boost while minimizing symptoms.

 

Alternative Sources Of Calcium

No dairy? No problem! You can still get your calcium fix from leafy greens, almonds, fortified plant-based milk, and fish like salmon and sardines — keeping your nutrition “moo-ving” in the right direction.

 

Final Thoughts

Lactose intolerance is a common “udder-taking” worldwide, bringing along a herd of digestive discomforts for many. Understanding lactose and the role of lactase helps shed light on why some people find dairy a little harder to digest. Although there’s no “cure” for lactose intolerance, there are plenty of ways to “moo-ve” around it! Opting for lactose-free products, popping a lactase supplement, or exploring dairy-free alternatives can keep your diet diverse and symptom-free. With these “dairy-lightful” strategies, people with lactose intolerance can savor a balanced intake of nutrients and keep digestive discomforts at bay — making overall wellness easier to digest!

 

Frequently Asked Questions About Lactose Intolerance

Can lactose intolerance develop suddenly?

Yes, lactose intolerance can sometimes develop suddenly, often due to a decrease in lactase enzyme production as people age. It may also result from temporary damage to the small intestine caused by illness or infection.

 

Is lactose intolerance the same as a milk allergy?

No, lactose intolerance is a digestive issue in which the body lacks the enzyme to break down lactose, while a milk allergy is an immune response to milk proteins that can cause severe allergic reactions.

 

Can lactose intolerance be reversed?

In cases of secondary lactose intolerance, often caused by a temporary illness or injury to the intestine, symptoms may improve once the underlying issue is resolved, potentially allowing lactase levels to recover.

 

Why are some ethnic groups more prone to lactose intolerance?

Genetic factors play a significant role in lactose intolerance. Populations with a long history of dairy farming and milk consumption, such as those in Northern Europe, have a lower incidence due to genetic adaptation, allowing continued lactase production into adulthood.

 

Are there any long-term health risks associated with lactose intolerance?

While lactose intolerance doesn’t pose long-term health risks, people with the condition need to ensure they get enough calcium, vitamin D, and other nutrients often sourced from dairy.

 

Does cooking or heating dairy products reduce lactose content?

Heating milk and dairy products doesn’t significantly reduce lactose content, so it generally won’t help alleviate symptoms for lactose intolerant people.

 

How can I tell if I’m lactose intolerant without seeing a doctor?

Some people self-diagnose lactose intolerance by observing symptoms after consuming dairy and noticing symptom relief when they avoid lactose. However, it’s best to consult a doctor for an accurate diagnosis to rule out other digestive issues.

 

Is lactose intolerance more common in certain age groups?

Yes, lactose intolerance tends to be more common in adults, as the body naturally reduces lactase production after childhood. It’s rare in infants, except in cases of congenital lactose intolerance.

 

Are hard cheeses safe to eat for those with lactose intolerance?

Yes, many hard cheeses like cheddar and Swiss are naturally low in lactose due to the aging process, making them easier to tolerate for some lactose-intolerant individuals.

 

Can stress or anxiety worsen lactose intolerance symptoms?

While stress and anxiety don’t cause lactose intolerance, they can exacerbate digestive symptoms, intensifying the discomfort associated with it.

 

Sources: 

  1. Mayo Clinic. (2022, March 5). Lactose Intolerance - Symptoms and Causes. Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/lactose-intolerance/symptoms-causes/syc-20374232
  2. Malik, T. F., & Panuganti, K. K. (2023, April 17). Lactose Intolerance. Nih.gov; StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK532285/
  3. Fisher, R. (2019, February 22). Symptoms & Causes of Lactose Intolerance | NIDDK. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/digestive-diseases/lactose-intolerance/symptoms-causes
  4. Cleveland Clinic. (2023, March 3). Lactose Intolerance. Cleveland Clinic. https://my.clevelandclinic.org/health/diseases/7317-lactose-intolerance
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