It doesn't degrade and accumulates in the body (https://en.wikipedia.org/wiki/Perfluorooctanoic_acid#Human_data https://en.wikipedia.org/wiki/Perfluorooctanoic_

It doesn't degrade and accumulates in the body (https://en.wikipedia.org/wiki/Perfluorooctanoic_acid#Human_data https://en.wikipedia.org/wiki/Perfluorooctanoic_acid#Human_d...), where it looks like it acts like a "biological handgrenade" (a nifty term I heard elsewhere). "PFOA is not rapidly eliminated from the human body, with a half-life of 3.8 years in human blood, thus raising the public concerns over the toxicological implications due to internal exposure." (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4817033/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4817033/) That's elimination from retired "fluorochemical production workers" (https://www.ncbi.nlm.nih.gov/pubmed/17805419/ https://www.ncbi.nlm.nih.gov/pubmed/17805419/).