I don't know what would convince you that at minimum, these chemicals should be taken out of food contact applications or heated up and volatilized in thermal p

I don't know what would convince you that at minimum, these chemicals should be taken out of food contact applications or heated up and volatilized in thermal printers, and then handed to a customer. Just picking articles at random, I don't have time for a full literature review for Hacker News, but the evidence taken in totality is overwhelming: 1. BPA (and related chemicals) activate estrogen receptors, causal study: https://www.ncbi.nlm.nih.gov/pubmed/28407500 https://www.ncbi.nlm.nih.gov/pubmed/28407500 This has been repeatedly demonstrated. 2. Direct human effects, correlational study: Working in a factory with BPA makes you impotent: http://www.oxfordjournals.org/news/dep381.pdf http://www.oxfordjournals.org/news/dep381.pdf 3. Direct human effects, correlational study: BPA exposure by parents, especially mothers leads to reduced anogenital distance in children: https://www.ncbi.nlm.nih.gov/pubmed/21987463 https://www.ncbi.nlm.nih.gov/pubmed/21987463 4. Direct human effects, correlational: BPA and other EDCs are associated with penile defects: http://www.acmt.net/_Library/PEHSU_Webinars/Is_Hypospadias_Associated_with_Prenatal_Exposure_to_Endocrine_Disruptors.pdf http://www.acmt.net/_Library/PEHSU_Webinars/Is_Hypospadias_A... 5. Human ingestion routes, correlational: Blood BPA levels are highest occupationally among cashiers (thermal receipts), and people who eat a lot of canned vegetables (plastic can liners): https://www.ncbi.nlm.nih.gov/pubmed/21205581 https://www.ncbi.nlm.nih.gov/pubmed/21205581 There are loads more where that came from. You've got a very direct mechanism of action, clear effects in animal models, and correlational studies showing people who are exposed to larger quantities show clear medical problems. You have clear, understandable routes of ingestion, and correlational data that shows that people who are exposed more to those routes of ingestion have more in their blood. I suppose you can complain that the human studies are correlational, but you can't legally perform a blinded study on this, because we know that BPA is harmful, and you won't get it past an IRB. Maybe you formed your opinion on this in the nineties or 2000s when only the hippies were trading out their nalgene bottles, but the science has come a long way, and the hippies were right. Phthalates are a very similar story.