Aren't nanoplastics a larger concern? All microplastics out in the open will degrade to nanoplastics at some point, and those find it much easier to infiltrate

Aren't nanoplastics a larger concern? All microplastics out in the open will degrade to nanoplastics at some point, and those find it much easier to infiltrate the human body. They penetrate the blood-brain barrier. This leads me to believe that it's literally impossible to avoid. The air/water supply must be getting more poluted by the minute with these things