What is BPA, and is 'BPA-free' safer?

O que as leitoras perguntam a seguir.

Is BPA banned?

Not broadly. In the United States, the FDA banned BPA-based polycarbonate and epoxy resins specifically in baby bottles, sippy cups, and infant formula packaging (2012 to 2013), but those bans were based on the fact that manufacturers had already abandoned BPA in those products, not on a finding of danger. The European Union has gone further, adopting a regulation banning BPA in most food contact materials following EFSA's 2023 risk assessment. So the regulatory picture genuinely differs by region.

Why do the FDA and EFSA disagree about BPA?

Both agencies looked at large bodies of evidence and weighted it differently. The FDA leans on its CLARITY-BPA program and maintains that approved food contact uses are safe at current exposure levels. EFSA, in its 2023 re-evaluation, gave more weight to effects on the immune system and lowered its tolerable daily intake to 0.2 nanograms per kilogram of body weight per day, concluding that typical dietary exposure now exceeds that level. It is a real scientific disagreement about interpretation, not a case of one agency having better data than the other.

Does 'BPA-free' mean a product is safe?

Not necessarily. 'BPA-free' only confirms that bisphenol A specifically is absent. Many products substitute related compounds such as BPS or BPF, and peer-reviewed research (for example Rochester and Bolden 2015 in Environmental Health Perspectives) found these have estrogen-like activity broadly similar to BPA. This is the 'regrettable substitution' problem. A claim of 'no bisphenols' is more reassuring than 'BPA-free' on its own.

What is the biggest source of BPA exposure?

For most people it is diet, and within diet, the epoxy linings of canned foods and drinks are a leading contributor, especially with acidic or heated contents. Polycarbonate food and drink containers can add to it, and thermal receipt paper is a notable skin-contact source. NIEHS and CDC biomonitoring data both point to food as the dominant route for the general population.

Is BPA on receipts actually a concern?

It is a real exposure route worth knowing about, though smaller for most people than diet. Many thermal receipts use BPA (or BPS) as a free powder on the surface, and studies show it transfers to skin on contact, more so if your hands are damp or recently moisturized. The simple, low-effort responses are to decline printed receipts when a digital option exists and to avoid handling them right after using hand sanitizer or lotion.

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