tenxengineer
PhonePe3mo
Because they are not small enough to pierce the gut walls. Also, most of them are bio-inert, they don't react with your body at all.
Sources:
https://www.sciencedirect.com/science/article/abs/pii/S0045653523022695
tenxengineer
PhonePe3mo
The only major thing you need to worry about is the ingestion of metals like lead and arsenic which actually are harmful for you. But compared to microplastics, you are more likely to ingest huge amounts of these metals from non purified water, and alternative pseudoscience based "medical" systems such as Ayurveda, Siddha and Homeopathy.
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