Chromium-6 from medical implants not harmful to health Chromium-6 from medical implants, such as hip or knee implants, does not result in severe health damage.
Discussion regarding health-based guidance value of PFOA The European Food Safety Authority (EFSA) has published a provisional health-based guidance value for perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA).