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Diabetes medicine awaits distribution at a community health center for low-income patients on Dec. 1, 2009 in Aurora, Colo. Diabetes medication is the most in-demand medicine for patients at the clinic.

How smoggy your city is might affect your chances of developing diabetes, according to a national study. Researchers from Children's Hospital Boston found a strong correlation between adult diabetes and particulate air pollution, a correlation that persists even after adjustment for other risk factors, including obesity and ethnicity.

Especially striking, the authors of the study found a linear relationship between the pollution of a place and prevalence of diabetes. The higher the exposure, the bigger the relationship. Reporter Sanden Totten looks into the study.