Scientists report human-relevant polystyrene (PS) microplastic concentrations change mice placental metabolism; show nanoplastics have variable effects on placental enzymes using simulations; find pre- and postnatal PS microplastic exposure affects male mice testis development and fertility; recommend future research to analyze multigenerational effects
Author archives: Lisa Zimmermann
Micro- and nanoplastics are released from food packaging
Researchers report cooking in non-stick Teflon cookware may lead to the release of thousands of micro- and nanoplastics; find 3 to 43 plastic particles prone to be released from Chinese polypropylene takeaway containers; detect around 1,500 microplastics/liter in Iranian bottled water; review points out that micro- and nanoplastic detection methods in food need validation and standardization
Microplastic in humans: current knowledge and implications
Review summarizes microplastics abundance and characteristics in human biological samples including current research approaches employed, challenges, and prospects; study indicates microplastics impact human meconium and placenta microbiota; review outlines current evidence on microplastic effects upon exposure during early developmental stage
70% reduction of microplastics by 2050 deemed possible
Material flow analysis on microplastics provides recommendations for reducing microplastics in the Netherlands; effective measures include extension of deposit schemes on returnable plastics, research in improved recycling technologies, and “R-strategies”
Microplastics in placenta: occurence, sources, effects
Three studies on microplastics and the human placenta; demonstrate particle presence in several intracellular compartments of placentas for the first time; assume breastfeeding and plastic toy usage as microplastic exposure sources to lactating infants; associate placental plastics with reduced fetal growth
WHO report on potential human health impacts of microplastics
World Health Organization (WHO) report assesses human exposure to micro- and nanoplastics via inhalation and diet as well as potential health implications; finds available data of limited use for risk assessment
Microplastic exposure through drinking cups and human health effects
Study finds up to 6000 particles/L to be released from disposable drinking cups; scientists estimate humans ingest 37,613–89,294 microplastics through plastic cups use per year; study suggests consumption from plastic containers changes human gut and oral microbiota composition; review concludes that uptake of microplastics carrying pathogens may impact human health
Negative impacts of nanoplastics on human placental cells
Study compares toxicity of nanoplastic particles with different sizes and surface charges on human placental cells; demonstrates smaller particles induce higher toxicity; recommend performing nanoplastic risk assessment on reproduction and fetal development
Microplastics in food: occurence, sources, perception
Three studies investigate microplastics in foods; review summarizes particle migration from food packaging into honey and calls for universal analysis methods; research study presents analytical method to detect and identify microplastics in certain foods; survey finds public seems unaware of food packaging as microplastic source and seldomly connects microplastics with human health consequences
Draft proposal to restrict intentionally added microplastics
European Commission (EC) publishes draft proposal to restrict intentionally-added synthetic polymer microparticles < 5 mm; could ban use of microplastics in cosmetics, cleaning products, pesticides, and sport fields; environmental groups warn of shortcomings