Microplastics: Detection in human samples, cell line studies, and health impacts
Abstract
Microplastics (MPs) are in all environmental compartments, including atmosphere, terrestrial, and aquatic environments as well as in marine organisms, foods, drinking water, and indoor and outdoor environments. MPs can enter the human body through the food chain and contaminated environment. Ingestion, inhalation, and dermal contact are the routes of their entry into the human body. Recent studies reporting the detection of MPs within the human body have raised concern among the scientific community as the knowledge about human exposure is still very limited and their impact on health is not well-understood yet. In this review article, we briefly cover the reports evidencing MP detection within the human body, e.g., stool, placenta, lungs, liver, sputum, breast milk, and blood. A concise synopsis of sample preparation and analysis of such human matrices is also provided. This article also presents a summary of the effect of MPs on human cell lines and human health.
How strong is the evidence?
Evidence Hub reads this as a review, done in cell cultures (in vitro), not in people. Its evidence level is 5 of 5 (Very low · case / narrative / animal / in vitro / in silico). Case reports, narrative reviews, and animal, cell or computer-model studies give the weakest evidence for human health.
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