What to eat (and avoid) in a world full of plastic | Dr. Sabine Donnai

Hundreds of thousands of plastic particles in every liter of water

Dr. Sabine Donai reveals that every liter of water, whether bottled in plastic, glass, or from the tap, contains hundreds of thousands of microplastic particles. Tap water is not cleaned of microplastics, herbicides, pesticides, PFAS, or hormones. Plastic has a half-life of about 50 years, and nanoparticles are small enough to cross cell walls and enter organs.

"Hundreds of thousands of pieces within a liter of water."

Brain microplastic levels doubled between 2016 and 2024

A University of New Mexico study found that brains had 60% higher microplastic concentration than liver or kidneys. Brain plastic levels doubled in just 8 years from 2016 to 2024, regardless of age. People with dementia had the highest concentrations. Microplastics can bypass the blood-brain barrier via the olfactory nerve, hitchhiking directly from the nose to the brain.

"The brain had about 60% higher concentration of microplastics than the liver and the kidney. And the difference between 2016 and 2024 in just eight years was double."

Indoor tumble dryers release 20-50x more airborne plastic

Tumble dryers that vent inside the home release synthetic clothing fibers as microplastics into indoor air, resulting in 20 to 50 times higher airborne plastic levels. Vacuuming then stirs these particles back up. Even common household items like microfiber cleaning cloths are plastic-based, continuously releasing particles.

"The amount of plastic that we find in the air is about 20 to 50 times higher than in people that don't have a tumble dryer that vents into the home."