At that rate it makes cumulatively about 36 mg of nanoplastics using this pathway over the average 70 year lifetime of average 70 kg human. That would be approx

At that rate it makes cumulatively about 36 mg of nanoplastics using this pathway over the average 70 year lifetime of average 70 kg human. That would be approximately 0.6 μg/mL concentration if all would accumulate, which is very unlikely. Sounds like there is no real need to worry.