Why My Doctor Warned Me Not to Touch Thermal Receipts

Hidden Hormone Disruptors: Why Receipt Paper (BPA) Should Be on Your Radar

When my daughter was a toddler, I took nutrition very seriously. She was born with hyper-phe PKU. I breastfed for a year. Then when she was old enough to drink milk, I found a highly nutritious organic baby formula with top ratings that I had to order online. It’s hard to find formula without palm oil. I made all my daughter’s baby food fresh and packaged it myself. I did hours of research to make sure she had complete meals that helped her grow, and grow she did. She was always in the 99th percentile for height and average weight. When she switched to cow’s milk, I made sure to get organic that was enriched with DHA.

For the record, the kid eats junk like it’s going out of style now, but in her first few years, I was adamant about making sure she had every opportunity to get a balanced diet.

I distinctly remember at one of her doctor’s appointments, I asked about hormones in milk and if it would affect her. The doctor’s answer surprised me. She said I should be more concerned with environmental factors like receipts.

Receipts? Excuse me?

Why Thermal Paper Receipts are Bad for Your Health

She explained that the paper they print receipts on is coated with chemicals that can disrupt hormones, and chemicals like this might cause children, especially girls, to reach puberty much sooner by mimicking, blocking, or accelerating reproductive hormones.

Since I don’t work in retail, and my baby wasn’t playing with receipt paper, I didn’t think too much about it. It wasn’t until yesterday, when I saw a video, that I decided to dig in deeper.

Dan Gubler, Ph.D., an organic chemist and molecular expert, warned that receipts are coated in BPA, or bisphenol A, which can disrupt hormones. As a woman in my 40s, that is scary. I’m already dealing with huge hormone shifts, and I don’t need any more craziness in my life.

Other Things to Avoid

It got me wondering what other common household items are harming my health. Turns out, the list is long.

Plastics & Packaging Chemicals
Bisphenol A (BPA) – water bottles, canned food linings, receipts
Bisphenol S (BPS) – often used as a “BPA-free” replacement (similar effects)
Bisphenol F (BPF) – another BPA substitute
Phthalates (e.g., DEHP, DBP, DEP) – plastic wrap, food packaging, vinyl flooring
Polyvinyl chloride (PVC) – shower curtains, pipes, synthetic leather

Personal Care & Cosmetics
Parabens (methylparaben, propylparaben, butylparaben) – lotions, shampoos, makeup
Triclosan – antibacterial soaps, some toothpastes
Synthetic fragrances (“parfum”) – can contain hidden phthalates
Benzophenones (e.g., oxybenzone) – sunscreens
Siloxanes (e.g., D4, D5) – hair products, deodorants

Household Products
Nonylphenol / nonylphenol ethoxylates (NPEs) – laundry detergents, cleaners
Flame retardants (PBDEs) – furniture foam, mattresses, electronics
Per- and polyfluoroalkyl substances (PFAS) – nonstick cookware, waterproof fabrics, fast-food wrappers
Formaldehyde & formaldehyde releasers – pressed wood furniture, air fresheners

Food & Agriculture Chemicals
Atrazine – herbicide used on crops (linked to hormone disruption in wildlife and humans)
Glyphosate – common weed killer (debated but widely studied)
DDT (still persistent in environment) – banned but long-lasting residues
Zearalenone – a mold toxin found in contaminated grains

Thermal Paper & Receipts
BPA / BPS coatings – absorbed through skin when handling receipts frequently

Food Contact & Processing
Styrene – from polystyrene containers (foam cups, takeout boxes)
Perchlorate – can contaminate water and affect thyroid hormone function
Dioxins – byproducts from industrial processes, accumulate in animal fat

Industrial & Heavy Metals
Lead – old paint, pipes
Cadmium – batteries, cigarette smoke
Mercury – certain fish (like large tuna)
These don’t “mimic” hormones directly but can disrupt endocrine glands.

Air & Environmental Pollutants
Polychlorinated biphenyls (PCBs) – banned but still present in the environment
Polycyclic aromatic hydrocarbons (PAHs) – vehicle exhaust, grilled/charred foods

Overwhelmed? Here's What to Do

Quick reality check: You can’t completely avoid all of these because they’re so widespread. What does make a difference is reducing repeated, high exposure:

• Avoid heating food in plastic
• Limit handling receipts
• Choose fragrance-free or “phthalate-free” products
• Use glass/stainless steel for food storage and water bottles
• Be mindful with nonstick cookware and waterproof coatings
• Check labels
• Avoid grilled or smoked food

We can't get away from these chemicals but we can make smart choices to limit them when possible.

Read More: Many Indiana and Kentucky Drinking Water PFA Levels Over Federal Limits