Title: Lactose Intolerance (for Kids) - Nemours KidsHealth
Headings: Lactose Intolerance
Lactose Intolerance
What Is Lactose Intolerance?
Who Gets It and Why?
Got Lactose Intolerance?
What Will the Doctor Do?
Living With Lactose Intolerance

Content: That means that something in these people's genes makes them more likely  to develop it. People can also develop lactose intolerance for other reasons. Sometimes another  illness may keep the intestine from producing enough lactase. For example, people  with inflammatory bowel disease (IBD), such as Crohn's  disease, or other long-term problems that affect the intestines are often lactose  intolerant. People can also develop lactose intolerance if they're taking certain medicines or just had an infection that caused  diarrhea. Luckily, this type of lactose intolerance doesn't usually last long. Even if you don't have trouble with lactose now, there's a chance you might someday. Why? Because your body starts making less lactase when you're around 2 years old. The older you get, the more likely it is that you could have trouble digesting dairy  foods.