Why Are PFAS So Dangerous?
Some key PFAS compounds, like PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonic acid), have been thoroughly studied and are known to be toxic.
Years of peer-reviewed research and epidemiological studies have linked PFAS exposure to a growing list of health issues. The National Institutes of Health (NIH) and the Agency for Toxic Substances and Disease Registry (ATSDR) report associations between PFAS and the following:
- Kidney, testicular, and liver cancers
- Liver damage
- High cholesterol
- Ulcerative colitis
- Hormonal disruption and thyroid disease
- Immune system suppression, including reduced vaccine response in children
- High cholesterol and cardiovascular risks
- Pregnancy complications and developmental delays in infants and children
According to the Centers for Disease Control and Prevention (CDC), PFAS have been detected in the blood of 97–99% of Americans, including newborns, which is evidence of how pervasive these chemicals are in our daily environment.
Humans are exposed to PFAS through:
- Drinking contaminated water (further discussed below)
- Eating fish or food raised in contaminated areas
- Using consumer products containing PFAS (e.g., waterproof gear, fast-food wrappers)
- Breathing indoor air and dust where PFAS-treated products are present
Even low-dose, long-term exposure is a cause for concern. According to a recent study published in Environmental Health Perspectives, some adverse effects are observed at PFAS concentrations below current federal health advisory limits.