how would bacteria affect the body – Are we too Clean Zone

Question: how would bacteria affect the body

Asked by steven10 to MarkF on 16 Jun 2010 in Categories: Your Research.
- Mark Fogg answered on 16 Jun 2010:
  
  We have bacteria living inside us that help us digest our food, they are called commensal bacteria. If we pick up a disease causing bacteria (a pathogen), we get sick and our immune system will try and fight it off, usually will help of antibiotics from the doctor.

Question: how would bacteria affect the body