Replacements cause problems in lab animals
After a growing body of research identified hormone-mimicking effects from BPA — a compound found in some plastics, dental sealants and cash register receipts — consumers began reaching for BPA-free products. But there is now evidence that at least one of the chemical substitutes, bisphenol S, can enter the body and trigger developmental and physiological changes.
A study published this year found that BPS can boost heart rates and lead to heart-rate variability in rats. Another reported altered brain development and behavior in fish (SN: 4/4/15, p. 10).