We already know diet and physical activity are important in preventing diabetes, but there is growing evidence our environment also plays a role. German researchers examined the relationship between several factors, including air pollution and temperature on average blood sugar levels. They reported in the journal Environment International that greater exposure to air pollution and increases in both temperature and temperature variability are associated with higher levels of average blood sugar known at HbA1c. Those environmental factors were observed separately and together, thus suggesting effects of air pollution and climate change should be studied together. This study focused on blood glucose changes in people who had not yet developed diabetes