Forever Chemicals Linked to Aggressive Breast Cancer

A recent federal study highlights a potential link between high levels of two forever chemicals, PFOA and PFOS, found in drinking water and an increased risk of aggressive breast cancer in women. The research indicated that individuals with the highest PFOA concentrations in their blood faced a 67% greater risk of ER-negative breast cancer, a form that does not respond to hormone therapy. Furthermore, the study found a 93% increased risk associated with the highest PFOS levels.

While these chemicals are no longer manufactured in the U.S., they persist and are found in numerous public water systems. Researchers are exploring how PFAS exposure might affect cancer growth, possibly through immune system changes or gene activity. The study analyzed data from 1,609 women with breast cancer and 2,269 controls. To mitigate exposure, the EPA recommends checking public water system reports and considering certified water filters that target PFAS chemicals.