A new study has found alarming evidence of microplastic contamination in human organs, challenging previous reports that downplayed the health risks associated with these pollutants. Led by researchers from Bond University, the study reviewed 18 earlier investigations and discovered the presence of microplastics in kidney, urine, and bladder cancer samples, raising concerns about their potential impact on human health.
Microplastics tiny plastic particles resulting from the global use and disposal of plastics have already been detected in the air, water, soil, food, and even human tissues. The 2019 World Health Organization (WHO) report claimed that microplastics in drinking water posed no significant risk to human health, but this new research suggests otherwise.
Key Findings: Microplastics in the Urinary Tract
The study found microplastics in 54% of urine samples, 70% of kidney samples, and 68% of bladder cancer samples. These contaminants are believed to cause toxicity and inflammation in urinary tract cells, reducing their viability and disrupting vital cellular processes, such as MAPK (mitogen-activated protein kinase) signaling, which helps cells respond to growth signals and stress.
The researchers warn that this cytotoxic effect could lead to serious health issues like bladder cancer, chronic kidney disease, recurring urinary tract infections, and incontinence.
Call for Urgent Action
The authors of the study are calling for more research and the development of global policies to address the growing threat of microplastic contamination. “This study challenges the World Health Organization’s assertion that microplastics pose no risk to public health,” the authors wrote, emphasizing the need to reassess current health guidelines in light of these findings.
Microplastics have infiltrated virtually every corner of the planet since the mass production of plastics began in the mid-20th century. In 2019 alone, 368 million tonnes of plastic were produced, with this figure expected to double by 2039. As these plastics degrade, they fragment into tiny particles that can easily enter human systems and the environment, with severe consequences for ecosystems and human health.
Given the study’s findings, the researchers are urging global governments and institutions to prioritize addressing microplastic pollution and its long-term impacts on public health.