26f7.jpg?format=1500w)
Lactose Intolerance: Your Complete Guide
Lactose intolerance is a common digestive disorder; it is the inability to digest the natural sugar lactose, which is found primarily in dairy foods. Also known as lactose maldigestion, this disorder occurs when someone does not have enough of the lactase enzyme. Lactase breaks down lactose in the digestive system into simpler sugars that the body can absorb. Lactose sensitivity symptoms include abdominal pain, diarrhea, gas, and uncomfortable bloating. This food sensitivity can be difficult to diagnose since symptoms can be attributed to a range of health issues, such as irritable bowel syndrome (IBS). Just know that you are not the only one with lactose sensitivity. In the U.S., about 36% of the adult population overall experiences some degree of lactose sensitivity.
Key Takeaways of Lactose Intolerance:
Over one-third of U.S. adults have lactose intolerance.
People who cannot digest lactose can still enjoy the goodness of dairy with the right strategies and lactose-free dairy.
There are significant misunderstandings surrounding lactose intolerance; learn to debunk the myths and discover practical tips for managing symptoms.
If left untreated, lactose intolerance may lead to missing vital nutrients like calcium and vitamin D. Learn how this can impact your health and overall well-being.
Lactose intolerance/lactose sensitivity is common worldwide, particularly in certain ethnic groups, and societies have adapted their cuisines and lifestyles accordingly.
Two Common Misconceptions About Lactose Intolerance
Misconception 1
People who are sensitive to lactose should avoid all dairy foods.
Q: Should people who are sensitive to lactose avoid all dairy foods?
A: No, people sensitive to lactose do not have to avoid dairy foods and can buy lactose-free dairy products.
TRUTH: Most people who cannot digest lactose can enjoy many dairy foods. For example, there are lactose-reduced or lactose-free milk, aged hard cheeses like Parmesan, cheddar, or Monterrey jack, and yogurts with live, active cultures.
Research shows most lactose-sensitive individuals can drink up to two glasses of regular milk daily with no symptoms if consumed in small quantities with food. Cooking with milk, yogurt, or cheese is an easy way to get the health benefits of dairy and avoid uncomfortable symptoms. The key is to build slowly and know your limits. Think of all the calcium you’re missing out on!
Above all else, dairy foods add a rich flavor profile and creamy texture to various recipes. Please don’t punish yourself by eliminating dairy; it’s too delicious!
Misconception 2
Lactose sensitivity or lactose intolerance means you are allergic to milk.
Q: Is lactose sensitivity the same as being allergic to milk?
A: No, lactose sensitivity is not the same as having a milk allergy.
TRUTH: Many people confuse being intolerant with having a milk allergy or irritable bowel syndrome (IBS). The truth is, milk allergies are extremely rare. Only about 1 percent of adults and 3 percent of children are allergic to milk.
A milk allergy is an immune system response to milk proteins. Unlike a milk allergy, lactose sensitivity and intolerance are digestive issues that impact how the body processes certain foods.
A milk allergy is a reaction to milk proteins and can cause symptoms like hives, wheezing, itching, and in severe cases, anaphylaxis. The good news is that most children typically grow out of a milk allergy in their first few years. The inability to digest lactose is not a disease or allergy — it is simply the digestive system’s inability to break down and digest lactose, a milk sugar.
Managing Lactose Intolerance
Being unable to digest lactose doesn’t require you to avoid dairy foods. Try these easy tips for enjoying milk, cheese, yogurt, and other foods from the dairy aisle:
➪ Include natural hard cheeses such as cheddar, Monterey Jack, Gouda, and Parmesan. When milk is made into cheese, most of the lactose is removed.
➪ Choose yogurts with live, active cultures, which help to break down lactose. Introduce small amounts of milk or milk products to help reduce symptoms.
➪ Try chocolate milk. Sometimes, it is easier to digest than white milk.
➪ Try lactose-free products such as lactose-free milk and lactose-free ice cream.
➪ It's important to read food labels carefully to avoid hidden sources of lactose.
➪ Work with a healthcare professional to help you develop a personalized lactose-free diet and make informed choices about lactose-free foods.
The Implications of Untreated Lactose Intolerance
When lactose is not digested, it can be fermented by gut microbiota and lead to discomfort. Untreated lactose intolerance can have long-term effects, particularly on bone health and calcium and vitamin D intake. Since dairy products are a primary source of these nutrients, many people don’t consume dairy, which is rich in vitamin D and calcium. Therefore, the body is missing out on these essential nutrients. Comparatively, if someone who cannot digest lactose continues consuming it, it can lead to chronic diarrhea. This can worsen over time and cause anemia, which affects mood and can cause weight loss.
If you suspect you cannot digest lactose, testing can confirm this. Both tests measure your body's ability to process lactose and can provide valuable insights. Once diagnosed, managing this intolerance usually involves dietary modifications.
Instead, eat lactose-free drinks and foods to prevent calcium deficiency, which can increase the risk of osteoporosis and fractures.
Common Questions about Lactose Sensitivity
What are the Symptoms of Lactose Intolerance?
Symptoms include possible discomfort about 30 minutes to two hours after consuming milk and milk products. Depending on the amount of lactose consumed and the amount a person can tolerate, symptoms range from mild to severe. Common symptoms include abdominal pain, bloating, gas, diarrhea, and nausea.
What Causes an Inability to Digest Lactose?
This is best explained by describing how a person develops lactase deficiency. Primary, this occurs or develops over time and begins after about age two when the body produces less lactase. Most lactase-deficient children do not experience symptoms until late adolescence or adulthood.
Can You Develop Lactose Intolerance Later in Life?
Absolutely. The inability to digest lactose can occur at any age due to decreased lactase production.
How is Lactose Intolerance Managed and Diagnosed?
Lactose intolerance symptoms can be managed with dietary changes. Many can tolerate some amount of lactose in their diet. Gradually introducing small amounts of milk or milk products may help some people adapt with fewer symptoms. Often, people can better tolerate milk with meals.
The doctor may first recommend eliminating all milk and milk products from the person’s diet briefly to see if the symptoms resolve. Two tests measure the digestion of lactose. The Hydrogen Breath Test and the Stool Acidity Test help medical professionals determine the levels of undigested lactose in the patient’s diet.
Who is at Risk for Being Lactose Intolerant? Is Lactose Intolerance More Common Among Certain Ethnic Groups?
The inability to digest lactose is a common condition that is more likely to occur in adulthood, with a higher incidence in older adults. Some ethnic and racial populations are more affected than others, including African Americans, Hispanic Americans, Native Americans, and Asian Americans. The condition is least common among Americans of northern European descent. It is possible to have congenital lactose intolerance. In some populations, particularly those with a long history of dairy farming, genetic mutations have led to lactase persistence, allowing individuals to continue producing lactase into adulthood. This adaptation is an example of human evolution in response to dietary practices.
In cultures where dairy is a staple, lactose intolerance can influence dietary habits and food preparation methods. For example, fermented dairy products, such as yogurt and cheese, often have lower lactose levels and are better tolerated by some individuals with lactose intolerance.
What Products Contain Lactose?
All animal milk and non-fermented animal milk products contain lactose, as well as some processed foods containing animal milk or animal milk products. Other common animal milks include goat, sheep, and buffalo. Check the ingredients on food labels to find possible sources of lactose in food products. Lactose is sometimes used in prescription medications and over-the-counter products to help relieve stomach acid and gas. Hard cheeses, such as sharp cheddar, Monterey Jack, Gouda, and Parmesan, contain little to no lactose.
How is Lactose Removed from Milk?
Lactose can be removed from milk if it is ultrafiltered. If milk is not ultrafiltered, lactase can be added to make it lactose-free. Lactase is an enzyme that breaks down the sugar lactose. Therefore, the lactose is already broken down for lactose-intolerant people.
Does Cooking Milk Remove Lactose?
No, cooking does not remove lactose.
Why is Lactose Intolerance Misunderstood?
1. Confusion with Dairy Allergy: Many people confuse the inability to digest lactose with a dairy allergy. While both conditions involve a negative reaction to dairy products, they are fundamentally different. Lactose intolerance is a digestive issue caused by the inability to break down lactose due to a deficiency of the enzyme lactase, whereas a dairy allergy is an immune response to proteins found in milk.
2. Variability in Symptoms: The severity of lactose intolerance can vary widely among individuals, leading to mild to severe symptoms. This variability can cause confusion and misinterpretation of the condition. Some people might experience only minor discomfort, while others may have significant digestive issues.
3. Delayed Symptoms: Symptoms can occur several hours after consuming lactose-containing foods. This delay can make it difficult for individuals to link their symptoms directly to lactose consumption with other foods or beverages consumed, leading to misconceptions about the cause of their discomfort.
4. Cultural Differences in Lactase Persistence: Lactase persistence, the continued production of lactase into adulthood, varies significantly among different ethnic groups. In some populations, lactose intolerance is the norm rather than the exception. This cultural variation can lead to misunderstandings about what is typical or atypical in lactose digestion.
5. Lactose Content in Foods: Many people are unaware of the lactose content in various foods and beverages. Lactose is found in obvious dairy products like milk and cheese, and in many processed foods that might not be expected. This lack of awareness can lead to accidental consumption of lactose and subsequent symptoms, fostering confusion about the condition.
6. Perception of Health Issues: Digestive issues are often stigmatized, leading individuals to downplay or misattribute their symptoms. Additionally, the widespread consumption of dairy products and the perception of milk as a healthful food can contribute to reluctance to acknowledge this intolerance.
7. Misleading Labels and Marketing: Marketing can sometimes contribute to misunderstandings. Terms like "lactose-free" and "dairy-free" can confuse consumers, especially when these terms are used inconsistently.
8. Self-Diagnosis and Misdiagnosis: People often self-diagnose based on incomplete information, leading to misconceptions. Additionally, healthcare providers might misdiagnose this intolerance as other gastrointestinal disorders, further complicating the understanding of the condition.