Breathing dirty air leads to weight gain, diabetes

Breathing dirty air takes a heavy toll on gut bacteria, boosting risk of obesity, diabetes, gastrointestinal disorders and other chronic illnesses, a new study revealed.

The study, published in the journal Environment International, is the first to link air pollution to changes in the structure and function of the human gut microbiome – the collection of trillions of microorganisms residing within us.

The research found, with young adults exposed to higher levels of ozone showing less microbial diversity and more of certain species associated with obesity and disease.

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