Inhaled microplastics inhibit key immune cell in the lungs, study finds

Microplastics are ubiquitous in the environment, and we all routinely inhale these tiny pollutants. Now, new research published at the ATS 2025 International Conference has found that inhaled microplastics suppress pulmonary macrophages, a type of white blood cell found in the lungs that are critical to the immune system.

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