Microplastics are everywhere in our bodies, but are they actually making us sick?
In short: Microplastics have been detected in human lungs, brains, blood, and even reproductive organs. While scientists have definitively confirmed their presence in our tissues, the medical consequences remain a mystery. Are these particles innocent bystanders, or are they driving a silent health crisis? The race to find out is on.
In the last decade, researchers have identified microplastic particles—defined as pieces smaller than five millimeters—throughout the human body. Evidence has emerged in the liver, kidneys, stomach, and placenta. Kara Meister, a professor at Stanford University, recently examined tonsils removed from children and found microplastics in every single sample. Despite this ubiquity, experts like Susanne Brander of the Pew Charitable Trusts emphasize that the primary question remains unanswered: what exactly these particles are doing to our physiology.
The field is currently navigating a period of intense scientific scrutiny. Some researchers have linked microplastics to inflammatory bowel disease and immune cell death, but these findings are still in early stages. A heated debate has emerged regarding detection methods, with critics questioning the methodologies of high-profile studies. Some experts compare the current uncertainty to the state of knowledge surrounding tobacco and asbestos in the 1950s, arguing that the issue requires serious attention even before definitive proof of harm is established.
Measuring these particles is notoriously difficult because they are often invisible to the naked eye and prone to contamination from laboratory equipment or ambient air. Common techniques like visual microscopy face challenges, as body fats can be mistaken for polyethylene. To improve accuracy, scientists are increasingly using advanced methods like infrared spectroscopy, which identifies chemical signatures, and pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS), which decomposes samples to analyze their components. As the field matures, these rigorous protocols are expected to clarify the true impact of plastic on human health.
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Sources
- Summary by Intellect · source: What Do Microplastics Do To My Body? | National Geographic
- Also: How many microplastic particles are really in our bodies?
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