Research by UAB has found that polymer-based commercial tea bags release millions of microplastics and nanoplastics when infused, which can be absorbed by human intestinal cells and potentially spread throughout the body. The study highlights the significant environmental challenge posed by plastic waste pollution and its impact on human health. The types of particles released by different tea bag materials were detailed, with polypropylene being the highest emitter. Tests on human intestinal cells revealed that mucus-producing cells had the highest uptake of micro and nanoplastics, raising concerns about chronic exposure effects. The researchers stress the importance of developing standardized test methods and regulatory policies to address micro and nanoplastic contamination in food packaging.
https://medicalxpress.com/news/2024-12-commercial-tea-bags-millions-microplastics.html