People may consume between 0.1 and 5 grams of tiny plastic particles each week through the food they eat, the water they drink, and the air they breathe, according to a review of 59 studies that...
Mechanism
Synthesis from 1 study
When you eat or drink things with tiny plastic bits, those bits just pass through your digestive system without being absorbed or broken down, and come out in your poop. This is how the body handles them — they don’t get into your blood or tissues at these levels.
Most probable mechanism
When people eat or drink things that contain tiny plastic pieces, those pieces pass through the mouth, stomach, and intestines without being broken down or absorbed, and are eventually removed from the body in feces.
Microplastic particles enter the body through ingestion via contaminated food, water, and inhaled particles cleared from the respiratory tract and swallowed.
Particles traverse the gastrointestinal tract without significant chemical degradation or cellular uptake due to their inert, non-biodegradable nature.
Particles remain physically intact during transit and are excreted in feces without entering systemic circulation in measurable quantities.
Evidence from Studies
Supporting (1)
Community contributions welcome
Estimation of the mass of microplastics ingested - A pivotal first step towards human health risk assessment.
Contradicting (0)
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Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.