Understanding Bisphenol-A (BPA): Sources, Risks, and Alternatives
Bisphenol-A (BPA), a chemical from the bisphenol family, was initially synthesized in 1891. While initially intended as a synthetic estrogen, it found widespread use in plastics from the 1950s onwards, enhancing their durability and transparency. This led to its incorporation into various products, including food containers, water bottles, and can linings.
BPA is primarily found in polycarbonate plastics (hard, clear plastics) and epoxy resins (used in can linings). Importantly, BPA can leach into food and beverages, posing potential health risks. Exposure can also occur through contact with thermal paper (receipts, tickets) and certain dental sealants.
The concern surrounding BPA stems from its endocrine-disrupting properties; it mimics estrogen and has been linked to reproductive issues, developmental problems in children, increased cancer risk, metabolic disorders (obesity, diabetes), and behavioral issues.
While "BPA-free" products are common, manufacturers often substitute with similar bisphenols (BPS, BPF) which may carry comparable risks. Therefore, "BPA-free" doesn't always guarantee safety.
To minimize BPA exposure, consider these steps:
- Reduce plastic use.
- Avoid heating food in plastic containers.
- Opt for glass food storage.
- Limit consumption of canned foods.
- Decline unnecessary receipts.
Further information can be found at the National Institute of Environmental Health Sciences (www.niehs.nih.gov/health/topics/agents/sya-bpa) and in various research publications (Vogel, 2009; Gore et al., 2015; Rochester & Bolden, 2015).