US Study Links Two PFAS Chemicals to Up to 93% Higher Risk of Aggressive Breast Cancer

The Hidden Danger of PFAS Chemicals and Their Role in Aggressive Breast Cancer

According to НВ — Техно: Research led by American scientists, recently published in the Journal of Clinical Oncology, has identified a significant association between two specific types of per- and polyfluoroalkyl substances (PFAS)-perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS)-and an increased incidence of a particularly aggressive form of estrogen receptor-negative breast cancer. Women with elevated levels of PFOA in their bloodstream showed a 67% higher occurrence of this cancer subtype, while those with high PFOS levels faced a 93% increase compared to women with the lowest exposure.

Study Details and Findings

The analysis utilized data from the Sister Study, involving 50,884 women aged between 35 and 74. Within this cohort, 1,609 women diagnosed with breast cancer were compared against 2,269 controls. Researchers measured concentrations of 17 different PFAS chemicals in participants' blood samples. Notably, no clear link was established between overall PFAS exposure and the general risk of developing breast cancer.

PFAS are often referred to as "forever chemicals" due to their persistence in the environment and tendency to accumulate in human tissues over time. Although PFOA and PFOS have largely been phased out of manufacturing, these substances still appear in human blood, raising concerns about ongoing exposure. This underscores the urgent need to evaluate the safety of newer PFAS replacements entering the market. The research team also intends to explore how PFAS might promote tumor growth through pathways unrelated to hormones, aiming to deepen our understanding of their health effects.

These findings emphasize the critical importance of investigating toxic chemical exposures for public health and strengthening regulations to control hazardous substances.

Given the long-lasting impact PFAS can have on the body, further investigations could guide the development of preventive strategies and protective measures for populations. Additionally, the evidence may encourage policymakers to implement stricter limitations on the use of PFAS in industrial processes and everyday products, reducing future health risks.

As researchers continue to uncover the impacts of environmental pollutants on health, recent findings on microplastics in water reveal their potential to release DNA-damaging radicals. This highlights the broader implications of chemical exposure, emphasizing the need for comprehensive studies on various substances, including PFAS, that could threaten public health.