In an article published by PLOS ONE the link between Type 2 Diabetes and high sugar consumption is discussed. While for a while the association between type 2 diabetes and sugar consumption was solely related to weight gain, but according to research conducted at UC San Francisco sugar intake may also be directly linked to diabetes.
The research identified that high sugar levels in a population's food supply was linked to higher rates of diabetes. Suggesting for the first time that not all calories contribute to diabetes risk the same way.
In the study done, the rate of diabetes increased the longer the population was exposed to excess sugar and it decreased when the sugar availability was reduced.
Though these findings don't provide concrete evidence that sugar is a cause for diabetes, it does suggest that the sugars unique negative effect on the liver and the pancreas could contribute to the disease.