How do PFAS chemicals enter our bodies and the environment?

Question

Accepted Answer

Per- and Polyfluoroalkyl Substances (PFAS) Enter the Environment and Human Bodies Through Various Pathways

Per- and polyfluoroalkyl substances (PFAS), also known as "forever chemicals," enter the environment primarily through their widespread use in consumer and industrial products and their extreme persistence. Once in the environment, these chemicals can then enter the human body through the consumption of contaminated food and water, as well as other less direct routes. The slow degradation rate of PFAS means they accumulate in soil and groundwater, eventually migrating into ecosystems and the food chain.
PFAS Contaminate the Environment Through Product Use and Persistence

PFAS are synthetic chemicals developed from the 1940s onwards for their ability to withstand heat and repel water and grease. Their application spans numerous products, including food packaging, cosmetics, stain-resistant fabrics, nonstick cookware, and flame retardants. Due to their exceptionally slow breakdown rate, these chemicals have progressively leached into the soil and groundwater systems.
Environmental Contamination Leads to Food Chain and Water Ingress

From soil and groundwater, PFAS have demonstrated a capacity to migrate into the broader food chain. This environmental contamination subsequently affects drinking water sources. The pervasive nature of these chemicals is underscored by their detection in diverse locations globally, ranging from remote environments like Mount Everest to biological samples such as human blood and brains.
Human Exposure Occurs Via Ingestion of Contaminated Food and Water

The primary pathway for PFAS to enter the human body is through the ingestion of contaminated food and drinking water. As these chemicals accumulate in the environment and are absorbed by plants and animals, they become part of the food we consume. Similarly, PFAS present in groundwater and surface water can contaminate municipal water supplies or private wells, leading to direct human consumption.
Potential for Absorption Through Other Routes and Occupational Exposure

While ingestion is a major route, it is also generally understood that exposure to chemicals like PFAS can occur through other means, such as absorption through the skin, particularly from products containing these substances. Furthermore, individuals working directly with PFAS in manufacturing settings, such as within the food, textile, or electronics industries, face the highest risk of significant exposure due to occupational contact.

Reading history

Hide →

This history is cleared when the page is closed.

How do PFAS chemicals enter our bodies and the environment?

Loading

Was this article helpful?

Helpful

Not helpful

Report an issue

1

0

0

Share with friends