Researching
early life
health impacts
of micro- and
nanoplastic 

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