There's microplastic in your blood, your testicles, your placenta, your brain. Every breath you take is plastic. Every glass of water has a credit card's worth of plastic per week, that was the headline. Bottled water is worse. Microwaved Tupperware is worse than that. The whole modern environment is slowly poisoning us at a cellular level. The studies are coming in. The damage is real. We are screwed.
Microplastics are genuinely everywhere. They have been detected in human blood, lungs, placentas, and (yes, in 2024) in testicular tissue. The bit that has not been established is what they are doing once they get there. A 2024 New England Journal of Medicine paper associating microplastics in carotid plaque with increased cardiovascular risk is real and worth taking seriously, but it's an observational study and association, not causation. Most claims of harm at current ambient exposure levels rely on extrapolation from cell culture and rodent studies at doses orders of magnitude higher than what humans actually encounter. The viral 'credit card a week' figure was a rough estimate of total plastic mass under worst-case assumptions, not a measured daily intake. Microplastic exposure is a genuine and worsening environmental problem, particularly for marine ecosystems. The current human-health harm story is plausible, partially supported, and absolutely not the apocalyptic certainty Instagram makes it. Worth following. Not yet worth panicking over. Worth refusing the receipt at Coles, probably.
Reception
Sources
- NEJM: Microplastics in atheroma (2024) PRIMARY
- WHO: Microplastics in drinking water REFERENCE