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American Focus > Blog > Health and Wellness > Early life exposure to common chemical permanently disrupts gut microbiome, mouse study finds
Health and Wellness

Early life exposure to common chemical permanently disrupts gut microbiome, mouse study finds

Last updated: September 2, 2024 6:10 am
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Early life exposure to common chemical permanently disrupts gut microbiome, mouse study finds
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The gut microbiome plays a crucial role in maintaining overall health, and new research suggests that early life exposure to certain environmental chemicals can have a lasting impact on this essential ecosystem. A study led by Penn State has found that exposure to a common persistent organic pollutant (POP) called 2,3,7,8-tetrachlorodibenzofuran (TCDF) in early childhood can disrupt the gut microbiome in mice, leading to metabolic disorders later in life.

TCDF is a byproduct of various industrial processes, including waste incineration and fossil-fuel combustion, and can accumulate in the food chain. Humans are primarily exposed to TCDF through the consumption of high-fat foods like meat, dairy products, and certain types of fish. Babies can also be exposed through breast milk.

The study, published in the journal Environmental Health Perspectives, involved two groups of mice—one treated with TCDF and one untreated control group. The mice were fed pills containing TCDF for five days, and the researchers then monitored their gut microbiomes and metabolic health markers. They found that early life exposure to TCDF resulted in permanent disruptions to the gut microbiome, as well as higher body weight and glucose intolerance in the mice.

Further experiments revealed that the altered gut microbiome was the primary driver of the metabolic disorders observed in the TCDF-exposed mice. When mice without microbiomes received transplants of gut microbiota from TCDF-treated mice, they developed similar metabolic disorders. This highlights the crucial role of the gut microbiome in mediating health outcomes.

One key finding of the study was the decrease in a beneficial gut bacterium called Akkermansia muciniphila in response to TCDF exposure. This bacterium is known for its role in promoting gut health, and its depletion due to toxic exposure could have negative consequences for overall health. However, the researchers found that administering Akkermansia muciniphila as a probiotic to TCDF-treated mice helped restore the gut microbiome to a healthier state.

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These findings have important implications for understanding how environmental chemicals can impact human health, particularly in the context of metabolic disorders like obesity and type 2 diabetes. The researchers hope that further research in this area could lead to potential interventions to restore the gut microbiome to a healthy state and mitigate the negative effects of early life exposure to harmful chemicals.

Overall, this study sheds light on the intricate relationship between environmental exposures, the gut microbiome, and metabolic health, emphasizing the importance of early life interventions to protect long-term well-being.

TAGGED:chemicalCommondisruptsearlyexposurefindsgutLifemicrobiomemousepermanentlyStudy
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