Other than family history, scientists aren’t sure exactly why people get Crohn’s. Things that can boost your chances include:
- Faulty immune system
- Living in an urban or industrial area
- Medications like nonsteroidal anti-inflammatory drugs (NSAIDs)
Some doctors think that while a super clean, germ-free childhood keeps illness away when you're young, it could make you likely to get immune system disorders like Crohn’s later on.