What are MICROPLASTICS?
Microplastics are small pieces of plastic less than 0.2 inches (5 mm) in size. They’re basically shedding from plastic, and are most often mentioned as part of the environmental issues involving plastic pollution. Microplastics are found in everything from cosmetics to clothing to water bottles.
Yes, microplastics enter the environment, but they also enter the body, and they certainly can affect the brain. Studies have shown that microplastics indeed do cross the blood-brain barrier in research animals. Keep in mind that this barrier is designed to keep harmful substances out of the brain, but these nano-sized particles are small enough to penetrate.
Once inside the brain, microplastics trigger inflammation, which is linked to a whole host of neurological conditions, cognitive decline and neurodegenerative diseases. These plastic bits increase oxidative stress in brain cells, damaging neurons and other cells in the central nervous system. Research animals exposed to microplastics show signs such as increased anxiety and reduced learning ability.
While direct human impact evidence is still limited, microplastics have been found in human blood, in the lungs and in the placenta.