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  • Low-Level Air...

Low-Level Air Pollution Increase Hyperglycemia Risk in Pregnancy: Study

Written By : Jacinthlyn Sylvia |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2024-09-06T20:45:26+05:30  |  Updated On 19 Feb 2025 1:06 PM IST
Low-Level Air Pollution Increase Hyperglycemia Risk in Pregnancy: Study
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A recent study published in the Environmental Science & Technology journal uncovered a significant connection between low-level air pollution exposure and increased hyperglycemia among pregnant individuals without pre-existing diabetes. The research highlighted the potential risks of air pollutants like PM2.5 (particulate matter) and NO2 (nitrogen dioxide) on blood glucose levels during pregnancy, even in the individuals considered medically low-risk.

The study focused on hemoglobin A1c (HbA1c) which reflects average blood glucose levels over the past three months. Elevated HbA1c levels are a concern as they indicate poor blood sugar control, which can lead to complications such as gestational diabetes mellitus (GDM). The research collected a total of 577 blood samples from 224 pregnant individuals by tracking HbA1c levels at 3 stages of pregnancy: early, mid, and late. The average HbA1c levels were recorded at 5.13% in early pregnancy, 4.97% in mid-pregnancy, and 5.43% in late pregnancy, indicating a U-shaped pattern of HbA1c levels across the pregnancy timeline.

Using high-resolution spatiotemporal models, the research estimated residential concentrations of PM2.5 and NO2 for each participant. They found that an interquartile range increase in 10-week NO2 exposure (approximately 8.0 parts per billion) was associated with a 0.09% increase in HbA1c levels throughout the pregnancy and a more substantial 0.18% increase in late pregnancy.

The findings of this study remained consistent even after adjusting for classic GDM risk factors like the maternal age, body mass index (BMI), and family history of diabetes. The association between air pollution and HbA1c levels was particularly pronounced during a critical window between the 8th and 14th weeks of gestation. Increased exposure to air pollutants during this period was linked to higher HbA1c levels at the 14th, 22nd, and 30th weeks of pregnancy. These outcomes illuminate the importance of minimizing exposure to air pollutants, particularly for pregnant individuals, to reduce the risk of adverse health outcomes like GDM.

Overall, the implications of these findings are particularly relevant for public health policies as they highlight the need for stricter air quality regulations to protect vulnerable populations, including pregnant people. Further research is imperative to fully understand the mechanisms behind this association towards recognizing and addressing the impact of environmental factors on maternal and fetal health.

Reference:

Lin, Y., Chen, R., Ge, Y., Brunner, J., Hopke, P. K., Miller, R. K., Thornburg, L. L., Stevens, T., Barrett, E. S., Harrington, D. K., Thurston, S. W., Murphy, S. K., O’Connor, T. G., Rich, D. Q., & Zhang, J. J. (2024). Exposure to Low-Level Air Pollution and Hyperglycemia Markers during Pregnancy: A Repeated Measure Analysis. In Environmental Science & Technology. American Chemical Society (ACS). https://doi.org/10.1021/acs.est.4c05612

Environmental Science & TechnologyAir pollutionHyperglycemia
Source : Environmental Science & Technology
Jacinthlyn Sylvia
Jacinthlyn Sylvia

    Neuroscience Masters graduate

    Jacinthlyn Sylvia, a Neuroscience Master's graduate from Chennai has worked extensively in deciphering the neurobiology of cognition and motor control in aging. She also has spread-out exposure to Neurosurgery from her Bachelor’s. She is currently involved in active Neuro-Oncology research. She is an upcoming neuroscientist with a fiery passion for writing. Her news cover at Medical Dialogues feature recent discoveries and updates from the healthcare and biomedical research fields. She can be reached at editorial@medicaldialogues.in

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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