According to a January 2012 article published in Diabetes Care, people infected with H. pylori are more than twice as likely to develop type 2 diabetes than those without the infection. Clearly, this is an association, not a cause because although 97% of those testing positive for the microbe and developing type 2 diabetes, 91% who did not develop type 2 diabetes. Thus, this infection is a weak marker for the likelihood of developing type 2 diabetes.
