Short Stuff: All about BPAs

What It Covers

Bisphenol A (BPA), a chemical in plastics and thermal paper receipts, acts as an endocrine disruptor mimicking estrogen. European regulators set safe limits 20,000 times lower than their previous standard, while the FDA maintains its original position.

Key Questions Answered

• •Receipt exposure: Thermal paper receipts represent the highest average BPA exposure source for most people. One study found holding a receipt for just ten seconds delivers unsafe BPA levels — minimize handling by declining receipts or using gloves when possible.
• •Dose paradox: Low doses of BPA produce worse health effects than larger doses, a counterintuitive finding without a fully established scientific explanation. This means trace exposures from everyday plastics may carry more risk than previously assumed under standard toxicology models.
• •Regulatory gap: The European Food Safety Authority in 2023 set a BPA safe limit of 0.2 nanograms per kilogram of body weight daily — approximately 10 billion times lower than the current FDA threshold of 5 milligrams per kilogram, signaling a significant divergence in risk assessment.
• •BPA-free is not bisphenol-free: Products labeled BPA-free commonly substitute bisphenol F or bisphenol S, which emerging studies suggest carry equivalent health risks including endocrine disruption. Glass or stainless steel containers without plastic lids or liners remain the most reliable avoidance strategy.