Avoid Thermal Paper Receipts!

A new study shows that a dangerous amount of BPA is on thermal paper receipts. And handling them transfers that BPA into your blood and tissues. And using hand sanitizer and many other creams, makeups, and water, can increase your exposure by 100 fold! That’s huge.

Some Suggestions To Reduce Your Exposure To BPA

Working with Thermal Paper Receipts (the smooth shiny kind from most stores)

  1. Try to avoid them. Get digital copies where possible, or take a picture of it.
  2. Make sure your hands are dry before signing the receipt.
  3. Don’t hold receipt for more than 10 seconds in your hand.
  4. Wear protective gloves when working with receipts.

Mayo Clinic’s Suggestions On Reducing Your Exposure

  1. Seek out BPA-free products. More and more BPA-free products have come to market. Look for products labeled as BPA-free. If a product isn’t labeled, keep in mind that some, but not all, plastics marked with recycle codes 3 or 7 may be made with BPA. (Mayo Clinic)
  2. Cut back on cans. Reduce your use of canned foods since most cans are lined with BPA-containing resin. (Mayo Clinic)
  3. Avoid heat. The National Institute of Environmental Health Sciences, part of the National Institutes of Health, advises against microwaving polycarbonate plastics or putting them in the dishwasher, because the plastic may break down over time and allow BPA to leach into foods. (Mayo Clinic)
  4. Use alternatives. Use glass, porcelain or stainless steel containers for hot foods and liquids instead of plastic containers. (Mayo Clinic)




  • Laboratory Human Testing.  Participants in the study either touched thermal paper after using Hand Sanitizer or touched the thermal paper with dry hands, and then ate French Fries.  Researchers then had blood analyses done to determine BPA absorption levels.  (PLOS ONE).  
  • Small Sample Size.  The test group using Hand sanitizer consisted of three subjects (2 men 1 woman) and the other group consisted of four subjects (2 men and 2 women).  (PLOS ONE)

You Made Me Think!

Lists That Make Your Life Better, Based On Scientific Study Results

Do you hear plausible ideas about health? Every day? I do, too. It gets maddening, doesn’t it? You’d like to agree with your friends, but how do you know it’s true? How can you be confident? And how do you say so? It’s not easy. I think that’s because plausible claims are easy to make, but really difficult to check. That’s partially why science was developed – to figure things out methodically so the work could be checked. And science has been incredibly successful at that, but science is complex and nuanced, so communicating it in a way that people can use everyday is a real challenge.

I need the best advice science has to offer in simple lists, for people like me with ADHD. And there aren’t great sources for this kind of thing, so I started YouMadeMeThink! to make simple, easy-to-use lists that are based on solid scientific studies. And update the lists when new research comes out, so you can rest with a bit of confidence that your lists will be current.

From now on, my brain is only accepting scientifically compelling input. If you have an opinion, great, please show me the science. That’s what this site is about.

You’ll find beautiful lists of things you can do to make your life better, all based on cited scientific studies. The lists are designed so you can use them however you like: print and stick on your fridge, save to your phone for shopping, share on social media.

We love suggestions. If you have any, please let me know and we’ll consider making a list.


-Mark Smith