Title: Is Lactose Intolerance Genetic? | How to Know If You're Lactose Intolerant - LunaDNA
Headings: Is Lactose Intolerance Genetic? | How to Know If You’re Lactose Intolerant
Is Lactose Intolerance Genetic? | How to Know If You’re Lactose Intolerant
Know Your Health: The Genetics of Lactose Intolerance
What is Lactose Intolerance?
Types of Lactose Intolerance
Lactose Intolerance Symptoms
Am I Lactose Intolerant?
What Causes Lactose Intolerance?
Is Lactose Intolerance Genetic?
Can You Become Lactose Intolerant?
Lactose Intolerance Risk Factors
Lactose Intolerance Test — How It’s Diagnosed
Lactose Intolerance Management

Content: Most people with primary lactose intolerance are genetically predisposed to significantly reduce lactase production between the ages of 2 and 5. As enzyme levels decrease, dairy becomes harder to digest and symptoms arise. Symptoms may not show until adulthood. Secondary lactose intolerance is caused by an injury or illness. Any negative impact to the small intestine can cause less production of lactase. Diseases, such as Crohn’s and celiac, are commonly linked to this type of lactose intolerance. Surgery, medication, or chemotherapy can also hinder production of the enzyme. This type of lactose intolerance can be temporary or permanent. Developmental lactose intolerance occurs in babies who are born prematurely. It usually resolves after the baby’s small intestines are fully developed.