Problem:
Please answer all the questions in detail:
Question 1: How could the bacterial microbiome impact obesity?
Question 2: What is Clostridium difficile and why is a Clostridium difficile infection so difficult to treat?
Question 3: How can bacteria impact cardiac disease?
Question 4: How might the bacterial microbiota affect type 2 diabetes?
Question 5: How can bacteria impact autoimmune diseases?