A narrative review published in the Journal of Nutrition Education and Behavior examined how dietary factors influence microplastic exposure and gut health, according to researchers from multiple institutions. The review synthesized existing literature on microplastics in food and water, their interaction with the gastrointestinal tract, and potential protective dietary factors.
Researchers found that ultraprocessed foods and bottled beverages are associated with higher microplastic levels, while dietary fiber, antioxidants, and probiotics may help mitigate harm, the report stated. The review recommends prioritizing whole foods over processed options and using tap or filtered water instead of bottled water. The findings come amid growing concern over microplastic contamination: in April 2026, Health Secretary Robert F. Kennedy Jr. announced a $144 million federal initiative aimed at tackling the crisis of microplastic contamination in human tissues, according to a statement from the Advanced Research Projects Agency for Health [1].
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