Microplastics stick around in human airways

Inhaled microplastics can pose serious health risks, so understanding how they travel in the respiratory system is essential for prevention and treatment of respiratory diseases. In Physics of Fluids, researchers develop a computational fluid dynamics model to analyze microplastic transport and deposition in the upper airway. The team explored the movement of microplastics with different shapes and sizes and under slow and fast breathing conditions. Microplastics tended to collect in hot spots in the nasal cavity and oropharynx, or back of the throat.

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