Recently at work, i listened in on a conversation about bisphenyl-A (BPA) leeching out of plastics. Specifically, baby bottles. This chemical is similar to estrogen and it may (or may not) have estrogen-like effects on people who ingest large amounts. You can ingest large amounts by ingesting food or drink from plastics that have BPA, for example avent bottles (that are made in england, by the way!).
I have heard of this debate before and thought, "I can't be worried about everything, there is a limit. The bottles are made in freakin' england, afterall. Europe is way more cautious with safety standards than the USA." Then i started reading. Basically, what i learned is some studies have found concerning health effects of BPA, but government-lead investigators have found problems with the studies done and aren't able to repeat the studies (in lab mice), but they're 'investigating the issue.'
Should that be enough to change the type of bottles we will use with the new baby? I'm not sure yet. My brief readings about plastics in general has already changed the way we heat things in the microwave (we do glass now, not plastic). And i changed my nalgene water bottle for a metal one. Should we throw the avent bottles out (to sit in a landfill) and buy glass as a result of inconclusive research??