Ackkk...

The list of things to worry about just keeps growing and growing...Ignorance is bliss (kind of).
Bhisphenol A which was recently banned from bottles and such in Canada is found in much much higher concentrations in bills and receipts from stores (the kind I hoard in my wallet and handbags, so I can return something easily in the future). The culprit is ink from thermal printers. BPA can cause behavioural changes in children at even small amounts found in plastic water bottles.

Do I really need to hoard those receipts? How many things have I actually returned in the past couple of months? How many store surveys have I actually completed? Hmm..

This quote from the original article sums it up.

"The uproar over nanograms and micrograms of BPA leaching from water bottles took place while millions of people casually handled receipts with thousands of times higher concentrations of BPA. Parents shudder over the prospect of a baby picking up a used cigarette butt, while a receipt on the floor may pose a more dangerous health threat."

Read more at Suite101: Bisphenol A Cash Register & Credit Card Receipts: BPA Free Baby Bottles & Canned Foods, but Thermal Printing is Source