Heat Boosts Microplastic Shedding from Takeaway Coffee Cups

A new study shows heat is the main driver of microplastic release from takeaway cups: all-plastic cups shed more particles than plastic-lined paper cups, and hotter beverages increase particle release. The researchers found a 300 mL daily hot coffee in polyethylene could lead to about 363,000 microplastics ingested annually. While long‑term health effects remain uncertain, the findings suggest using reusable cups or cooler drinks to reduce exposure, and avoiding pouring boiling liquids into plastic-lined containers.