We all have these pollutants in our bodies. This study found that people with high levels were 38 times! more likely to have diabetes:
A Strong Dose-Response Relation Between Serum Concentrations Of Persistent Organic Pollutants [POPs] And Diabetes: Results From The National Health And Examination Survey 1999–2002, Diabetes Care, 2006
The association was stronger in younger people and obese people. Interestingly, "there was no association between obesity and diabetes among subjects with nondetectable levels of POPs." So you could be obese but if you had low levels of these pollutants, your risk for diabetes was similar to someone who was slender.