Perfluorinated Compounds (PFAS) vs Calcium Disodium EDTA: which is worse?

What is Perfluorinated Compounds (PFAS)?

Per- and polyfluoroalkyl substances (PFAS) are a large family of synthetic chemicals characterized by extremely strong carbon-fluorine bonds. They are used in food packaging (grease-resistant coatings), non-stick cookware (PTFE/Teflon), food processing equipment, firefighting foam, and many industrial applications. The 'forever chemicals' moniker reflects their extreme environmental persistence.

What is Calcium Disodium EDTA?

Calcium disodium EDTA (ethylenediaminetetraacetate) is a chelating agent used as a food preservative. It binds metal ions (particularly iron and copper) that would otherwise catalyze oxidative and color-degradation reactions in foods. It prevents color loss, flavor changes, and bacterial growth in certain foods.

Documented risks

Perfluorinated Compounds (PFAS): PFAS are among the most extensively studied and harmful groups of synthetic chemicals in the modern environment. Their unique carbon-fluorine bond stability means they do not break down in the environment or in human body tissues — contributing to bioaccumulation over a lifetime. Health effects documented in human epidemiological studies include: - Cancer: PFOA (perfluorooctanoic acid) and PFOS (perfluorooctanesulfonic acid) have been associated with kidney cancer, testicular cancer, thyroid cancer, bladder cancer, and non-Hodgkin lymphoma in occupationally exposed workers and community members with contaminated drinking water. IARC classified PFOA as Group 1 (human carcinogen) in 2023 and PFOS as Group 2B. - Endocrine disruption: PFAS disrupt thyroid hormone signaling and sex hormone balance. Multiple studies find associations between PFAS exposure and hypothyroidism, early puberty in girls, and reduced sperm quality. - Immune suppression: studies have found that PFAS exposure is associated with reduced vaccine response in children and adults, suggesting PFAS may impair immune function. - Developmental effects: prenatal PFAS exposure has been associated with lower birth weight, developmental delays, and reduced immune response in infants. - Cholesterol: PFAS exposure consistently raises LDL cholesterol levels, increasing cardiovascular disease risk. The 2023 EPA MCLG (maximum contaminant level goal) for PFOA and PFOS is zero — reflecting the agency's conclusion that there is no safe level. The EPA set enforceable MCLs in drinking water in 2024. The DuPont/3M PFOA/PFOS contamination of drinking water in communities near Teflon manufacturing facilities led to a $671 million settlement (DuPont/Chemours, 2017) and $10.3 billion 3M settlement (2023) — among the largest environmental contamination settlements in history.

Calcium Disodium EDTA: EDTA chelates essential minerals including zinc, iron, calcium, and magnesium in the gut, potentially reducing absorption of these nutrients with regular consumption. Animal studies at high doses show reproductive toxicity and zinc deficiency effects. EFSA's safety assessment noted that EDTA could reduce zinc bioavailability at consumption levels that could be reached by high consumers of EDTA-containing foods. The ADI is 1.9 mg/kg body weight. EDTA's poor biodegradability also makes it an environmental concern — it accumulates in water supplies and can mobilize heavy metals in sediments.