Is Perfluorooctanoic Acid safe in food and drink?

Perfluorooctanoic acid (PFOA) is classified as carcinogenic to humans (Group 1) by the International Agency for Research on Cancer (IARC), based on sufficient evidence in experimental animals and strong mechanistic evidence in exposed humans, with limited evidence for testicular and kidney cancer in humans.

Why here

Ingestion is a primary route of exposure for the general population, particularly through contaminated drinking water and food.

What would have to be true

Ingestion of PFOA through contaminated drinking water (above 4 parts per trillion (ppt) as per EPA's MCL) or food.

The U.S. Environmental Protection Agency (EPA) has established a legally enforceable Maximum Contaminant Level (MCL) of 4 parts per trillion (ppt) for PFOA in drinking water.

Why here

This regulation directly addresses PFOA exposure through the ingestion of drinking water.

What would have to be true

Ingestion of drinking water containing PFOA above 4 ppt.

PFOA is a persistent organic pollutant, often referred to as a 'forever chemical,' that does not break down easily in the environment and can accumulate in the human body over time through ingestion of contaminated food and drinking water.

Why here

The persistence and bioaccumulation of PFOA mean that ingested amounts can remain in the body for years, leading to long-term exposure and potential health effects.

What would have to be true

Ubiquitous exposure to PFOA through contaminated food and drinking water.

Studies suggest that PFOA can act as an endocrine-disrupting chemical by interfering with hormone systems, altering steroid hormone production, and affecting thyroid and sexual hormone signaling.

Why here

Ingested PFOA can accumulate in the body and interact with hormonal pathways, potentially leading to endocrine disruption.

What would have to be true

Ingestion of PFOA through contaminated food and drinking water.

PFOA exposure has been associated with increased cholesterol levels, changes in liver enzymes, and may be involved in weight gain and insulin resistance.

Why here

Ingested PFOA can accumulate in the body and has been linked to metabolic disturbances in human and animal studies.

What would have to be true

Ingestion of PFOA through contaminated food and drinking water.

PFOA exposure has been linked to liver damage, hepatic stress, fatty liver disease, and abnormal cell proliferation.

Why here

The liver is a primary organ for processing and accumulating PFOA after ingestion, making it susceptible to toxic effects.

What would have to be true

Ingestion of PFOA through contaminated food and drinking water.

Perfluorooctanoic acid (PFOA) is classified as carcinogenic to humans (Group 1) by the International Agency for Research on Cancer (IARC), based on sufficient evidence in experimental animals and strong mechanistic evidence in exposed humans, with limited evidence for renal cell carcinoma and testicular cancer in humans.

Why here

PFOA can migrate from food contact materials, particularly packaging, into food, with the risk of migration increasing at higher temperatures. While PFOA has been phased out of new non-stick cookware manufacturing, older products or environmental contamination can still lead to dietary exposure.

What would have to be true

Ingestion of food contaminated by PFOA migrating from heated food packaging (e.g., microwave popcorn bags, fast-food wrappers) or from environmental contamination in the food chain. Overheating older non-stick cookware that may contain PFOA could also lead to exposure.

PFOA acts as an endocrine-disrupting chemical (EDC) by interfering with hormone systems, and exposure has been linked to thyroid disease, altered cholesterol levels, and harm to reproductive health.

Why here

Humans are exposed to PFOA daily through contaminated food and water, with dietary intake being a primary route. Migration from food packaging into food, especially when heated, contributes to this exposure.

What would have to be true

Ingestion of food contaminated by PFOA migrating from heated food packaging or from environmental contamination in the food chain. Studies have found correlations between serum PFOA concentrations and intake of red meat and packed snack foods.

PFOA is a persistent 'forever chemical' that does not break down easily, accumulating in the environment and human body, leading to widespread contamination of the food chain through water, soil, and bioaccumulation in animals.

Why here

Environmental persistence and bioaccumulation mean that PFOA can enter the food supply through contaminated crops, livestock, and seafood, which are then consumed by humans, including in heated food preparations.

What would have to be true

Dietary intake of food products (e.g., seafood, agricultural products, meat, dairy) that have been contaminated by PFOA in the environment, as well as migration from food packaging.

Human epidemiological studies suggest a causal association between PFOA exposure and increased serum levels of cholesterol and the liver enzyme alanine transferase (ALT), and some studies link prenatal PFOA concentrations to greater adiposity and a more rapid increase in BMI in children.

Why here

Dietary intake is a primary route of human exposure to PFOA, including from food contact materials and environmental contamination, which can lead to metabolic effects.

What would have to be true

Ingestion of food contaminated by PFOA from various sources, including migration from food contact materials and environmental bioaccumulation in the food chain.