Arsenic in the US Water Supply Linked to Diabetes?

A study reported in this week's JAMA suggested that ``stemming the pandemic of type 2 diabetes is a public health priority and will require a multi-faceted approach,'' wrote Molly Kile and David Christiani, Comment: The evidence is not terribly good. The data is from a crossectional study which can demonstrate association but NOT causality. No background data on exposures is provided, only data on blood levels that provide no evidence of length of exposures and whether arsenic exposure preceded onset of diabetes.