BPA and Plastic Substitutes: What the Regulation Actually Covers

The short answer

BPA — bisphenol A — is a chemical used since the 1960s to make polycarbonate plastic and the epoxy resin linings inside food and beverage cans. In 2012, the FDA amended its food additive regulations to stop authorizing certain BPA-based materials in baby bottles and sippy cups. In 2013, it did the same for infant formula packaging. That's a real, specific regulatory action — not a general health warning about BPA.

It's also narrower than it sounds. The FDA has been explicit that this change was made because manufacturers had already abandoned BPA in those specific products, not because the agency found a new safety problem. BPA remains authorized, and the FDA still considers it safe at approved levels, for other food-contact uses — most notably the epoxy linings inside metal cans.

Separately, and less discussed, is the question of what replaced BPA. Most "BPA-free" products use a close chemical relative — usually BPS or BPF — and the honest answer is that far less research exists on those substitutes than exists on BPA itself.

Where the concern came from

BPA is genuinely widespread. According to NIEHS, a national health survey (NHANES) found detectable BPA in the urine of 93% of Americans age six and older. Most exposure comes through diet — BPA can migrate from can linings and polycarbonate containers into food and beverages, especially when heated — though air, dust, and water are recognized as smaller additional sources.

The reason for concern is a body of animal research on BPA as an endocrine disruptor. NIEHS, NTP, and FDA ran a multi-year collaborative research program (CLARITY-BPA) specifically to test this. Its guideline-compliant "core study" found effects mainly at exposure levels far higher than typical human exposure. But the university-run research conducted alongside it — using methods not part of standard regulatory testing — reported effects at lower, more human-relevant doses, including changes in mammary gland development in rodents. The two halves of the same program didn't fully agree, which is itself informative: a former NIEHS scientist involved in the project said the result "suggests that current guideline-compliant studies used in regulatory decision-making may not detect all potential hazards from real-world exposures to chemicals, especially hormone-disrupting substances such as BPA."

What the evidence actually shows

On BPA itself: the FDA's most recent formal review (completed in 2014, covering more than 300 studies) did not find grounds to change its safety assessment for currently approved uses. That assessment hasn't been revisited by a new formal FDA review since. It's accurate to say BPA is still authorized and still considered safe by FDA at current exposure levels — and also accurate to say the CLARITY-BPA program left real open questions about low-dose effects that the agency's own guideline studies aren't designed to catch. Both things are true at once; neither one cancels the other out.

On substitutes: a systematic review published in Environmental Health Perspectives — the journal NIEHS itself publishes — found that BPS and BPF are structural analogs of BPA, and that in the studies that do exist, both showed estrogenic and anti-estrogenic activity comparable to BPA in lab and animal models. The same review is direct about the gap: it identified only 32 total studies on BPS/BPF health effects (25 in vitro, 7 in vivo), against "hundreds of laboratory studies" on BPA itself. That's the precise shape of the concern — not "proven equally harmful," which the existing research doesn't establish either way, but "meaningfully less studied while being chemically similar enough that the same mechanism of concern plausibly applies."

On thermal receipt paper: this is a separate exposure route from food packaging, and one people rarely connect to BPA. Free BPA is applied at high concentration directly to the surface of most thermal receipt paper as a print developer. A controlled study published in PLOS ONE found that holding a receipt after using hand sanitizer — which increases skin absorption of BPA — and then eating food produced a measurable spike in serum and urine BPA within 90 minutes. The same study tested 50 receipts and found just over half used BPS instead of BPA as the print developer — meaning a "BPA-free" receipt commonly means "BPS instead," not "neither chemical."

What SafeMama actually recommends

The highest-value action here is already effectively done for you: FDA's regulation means BPA-based materials aren't authorized in baby bottles, sippy cups, or infant formula packaging, and the market follows that regulation. There's no meaningful decision left to make in that category.

For everything else, this is a reduce-when-easy category, not an avoid-at-all-costs one. NIEHS's own guidance is straightforward: cut back on canned food where it's convenient, don't microwave polycarbonate plastic, and use glass, porcelain, or stainless steel for hot food and liquids when you have the choice. Checking recycle codes helps too — codes 3 and 7 are the ones that may indicate BPA-containing plastic.

For receipts, declining the paper copy when a store offers a digital one is the simplest step, and it's worth not handling one right after using hand sanitizer. Don't assume a receipt marketed as safer is meaningfully different — the same study above found the underlying chemical is often just swapped, not removed.

The exposure quiz scores how often your household leans on canned food, unlabeled plastics, and paper receipts — a frequency signal for your own reference, not a claim about risk. A "worth a look" result here means your answers landed on the higher-frequency end of this specific question, nothing more.