BPA (bisphenol-A) is a toxic chemical that is often used to synthesize plastics and is a health hazard because it mimics hormones in the body, altering normal hormonal pathways. BPA is most dangerous in children as they are developing and hormone pathways need to be tightly regulated. As such, this is why BPA gave the world quite a scare a couple of years ago (2008) when it was found to be an ingredient in baby bottles. BPA is one reason why stainless steel water bottles gained popularity because plastic water bottles contain BPA (this included the famous Nalgene bottles for the longest time too; apparently they are now BPA-free). Another reason why I avoid plastic containers when storing hot foods (I use glass containers or empty jars (including mason jars)) is because of their BPA content and because the heat is believed to draw-out this chemical, increasing your exposure. (P.S. don't microwave food in plastic containers!).
So, if you've heard all about BPA and its relationship with plastic, then hooray! However, have you heard about the connection between BPA and recycled paper? As a lover of all things green, I've investigated all sorts of re-used and recycled products, including paper. I really wanted to buy recycled toilet paper, until I learned about its link to BPA. You see, most recycled paper products are made up of recycled receipts, movie tickets, air plane tickets, stickers, etc., and unfortunately all of these forms of paper contain BPA, giving them that glossy and smooth feel. This research paper explains how high levels of BPA have been detected in recycled paper toilet paper. This is just my little science-y mind spinning, but I wonder if cleaning the genital area with BPA-lined toilet paper could contribute to future genital problems? Colon cancer, cervical cancer...? I'm just hypothesizing (I don't know if a link has been fully established) and thus am airing on the side of caution. Anywho, read more about BPA in recycled paper here.
To summarize, buyer beware. You'd think that you are buying the best product, but it may have harmful affects on your body. You'd think that by helping the environment, that you'd be helping your body... yet sadly, it is not always the case.