Diabetes and pollution: a correlation in gestation

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Diabetes and pollution: a correlation in gestation

Researchers from Washington University in Saint Louis analyzed the more than 1.7 million people followed on average for 8.5 years, comparing their health with the pollution rates recorded by the stations near their homes.

Research has shown a strong link between pollution and diabetes: about 21% of subjects exposed to a level of smog between 5 and 10 micrograms per cubic meter has in fact developed the disease; in particular for those between 12 and 14 the percentage was 24%.

Comparing these numbers to new cases of diabetes worldwide, according to the authors of the study, pollution and smog would contribute to the onset of at least 3.2 million cases of type 2 diabetes every year. Other studies have also taken these two elements into consideration.

Dietary patterns and associations between air pollution and gestational diabetes mellitus, published on the Environment international, from an interesting retrospective. We can read: "The prevalence of gestational diabetes mellitus (GDM) has been increasing worldwide.

Dietary patterns and air pollution are closely related to the occurrence of GDM. No previous study has explored the interaction effect of air pollution exposure and dietary patterns on GDM.

Diabetes pollution: a correlation in gestation

We explored the interaction effect between main dietary patterns and pre-pregnancy exposure to air pollution on the development of GDM based on a prospective birth cohort in Northeast China.

A total of 2244 participants were included in this study. Factor analysis was used to identify dietary patterns. We found that long-term exposure to nitrogen dioxide (NO2) and carbon monoxide (CO) before pregnancy was significantly associated with an increased risk of GDM; the animal foods pattern significantly modified these associations.

The sub-group analysis showed that compared with a lower intake in the animal foods pattern (NO2, odds ratio [OR] = 1.07, 95% confidence interval [CI]: 0.84, 1.35; CO, OR = 1.05, 95% CI: 0.81, 1.34), higher intake in the animal foods pattern (NO2, OR = 1.41, 95% CI: 1.09, 1.83; CO, OR = 1.36, 95% CI: 1.05, 1.76) before pregnancy increased the hazardous effects of NO2 and CO on GDM development.

The intake of animal blood, animal organs, preserved eggs, and processed meat products in animal food pattern could all aggravate the effect of exposure to air pollution due to NO2 and CO on GDM. Our study demonstrated that there was a significant interaction effect between animal foods pattern and exposure to air pollution on GDM.

These results provide further scientific evidence of the associations among air pollution, dietary intake, and GDM, and may help as well as the prevention of GDM."