Recent peer-reviewed studies have confirmed the presence of microplastic particles in human placental tissue. Sample sizes to date have been small and geographically narrow — predominantly European and East Asian urban populations. We propose a multi-site collection study spanning urban, rural, coastal, and inland populations across five countries to establish baseline concentration data, characterize particle type distribution, and identify primary exposure correlates. Ethical approvals and institutional partnerships are in discussion pending funding confirmation.
The geographic spread here is exactly what the existing literature lacks. The Ragusa et al. 2021 study that confirmed placental microplastics had only 6 placentas. This proposal is the right scale for the question.
As someone who works with pregnant patients this is the one that genuinely keeps me up at night. We don't know what the clinical implications are yet but the presence alone warrants urgent investigation.