Can bisphenol F and bisphenol S in 'BPA-free' products still mimic estrogen?

What's actually in it

Bisphenol F (BPF) and bisphenol S (BPS) are the two most common replacements for BPA in "BPA-free" products. They're found in canned food linings, plastic containers, receipt paper, and water pipes. Despite being promoted as safer, both have chemical structures that fit into estrogen receptors in your cells.

What the research says

A 2026 study in Toxics used structural analysis to map exactly how BPF and BPS interact with estrogen receptors. The researchers confirmed that both chemicals bind to estrogen receptors in ways that activate estrogenic signaling. The binding patterns were similar to BPA itself.

Estrogen mimicry can disrupt reproductive health, breast tissue growth, metabolism, and brain function. Products labeled "BPA-free" that contain BPF or BPS may not be any safer from an endocrine disruption standpoint.

Avoid all bisphenol variants by choosing glass, stainless steel, and ceramic for food and drink containers. Don't trust "BPA-free" labels as a guarantee of safety.