Author archives: Lisa Zimmermann

Scientists assess microplastics in 30 human semen and 6 testis samples; first to demonstrate presence in human male reproductive system; review finds 9 out of 11 studies demonstrate that plastic particles can translocated across placental barrier

Several articles published since the beginning of 2023 have analyzed plastic particles in packaged foods and beverages, including salt, sugar, canned fish, bottled water, soft drinks, and cold tea; draw a connection to packaging and food processing; migration studies demonstrate particle release from plastic food containers and breastmilk storage bags; review develops 10 criteria for data quality assessment and find most studies “unreliable” on one or more criteria

Small pilot study analyzes saphenous vein tissues from five individuals and detects 15 plastic particles/g tissue indicating transport of plastic particles within human tissue; review concludes more research needed to elucidate the potential carcinogenicity of micro- and nanoplastics; researchers find potential connection between colorectal cancer and microplastic exposure level; preliminary study report microplastic presence in four out of six urine samples 15 plastic particles/g of tissue

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

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

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

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”

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

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

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