How much plastic are we eating?
Estimation of the mass of microplastics ingested - A pivotal first step towards human health risk assessment.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists looked at 59 studies to figure out how much tiny plastic bits we swallow every week from food, water, and air.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 533 / 100
Evidence Score
The highest quality evidence. These studies systematically search, appraise, and synthesize results from multiple individual studies, providing the most reliable summary of current knowledge.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists looked at 59 studies to figure out how much tiny plastic bits we swallow every week from food, water, and air.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 533 / 100
Evidence Score
The highest quality evidence. These studies systematically search, appraise, and synthesize results from multiple individual studies, providing the most reliable summary of current knowledge.
Publication
Authors
Senathirajah K, Attwood S, Bhagwat G, Carbery M, Wilson S, Palanisami T
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Claims (6)
Different studies estimate how much microplastic people consume each week, but their numbers differ by up to 50 times because they use different methods, define microplastic sizes differently, and make different assumptions about how much is swallowed.
Estimates of how much microplastic people ingest are based mostly on particles between 0 and 1 millimeter in size, because these are the most frequently found and biologically relevant in human exposure, but smaller or larger particles may also be involved.
To assess whether microplastics in the human body might cause harm, scientists first need to measure how much people are ingesting, since existing models for evaluating toxicity require precise data on exposure levels.
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 measured plastic contamination in these sources.
Researchers developed a standardized method to convert the number of microplastic particles found in food, water, and air into measurable mass values, allowing scientists to compare human exposure levels across different sources.