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What are the effects of microplastics on bladder health?
Researchers say microplastics can reach urine and the bladder, but the World Health Organization says evidence is still insufficient to determine health risks.
On Thursday, July 30, 2026, Aeroflow Urology reported that microplastics have been detected in the human urinary system, with particles typically measuring up to 5 millimeters long.
Jason Carter, a urology professional, explains that because kidneys filter blood while the bladder stores urine, the urinary system is reasonably exposed to these particles and their associated chemicals.
Emerging data suggests microplastics and nanoplastics may increase inflammation and damage cells; nanoplastics are 100 times smaller than the diameter of a human hair, raising concerns about potential tissue stress.
Aleece Fosnight, medical advisor for Aeroflow Urology, stated that no strong evidence proves everyday exposure directly causes bladder disease, though the World Health Organization reported in 2022 that risks remain undetermined.
Experts advise reducing exposure by avoiding heated plastic containers and seeking medical attention for urinary urgency symptoms, as a 2024 scoping review listed urinary incontinence as a potential public health concern.