Receipts which use ink that fade over time are made with ‘thermal paper’ which contains BPA (bisphenolA). Studies have shown the chemical can lead to hormone-dependent cancers, and has previously been linked to infertility, autism, ADHD, obesity, type 2 diabetes, premature births and early onset of puberty.

There are already concerns about the public being exposed to BPA, which is often found in plastics. We should avoid storing receipts in purses, wallets, or cars, according to Professor Nicolás Olea, from the University of Granada, Spain. BPA is added to receipts to make their writing darker without using ink, and is also found in plastic water bottles and food containers.
International researchers, led by...

http://haleplushearty.org/2019/01/16/receipts-contain-cancer-causing-chemicals/

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