The biggest problem is a set of harmful chemicals called endocrine disrupting compounds (EDC). EDC’s are synthetic chemicals that mimic or block hormones and disrupt the body’s normal functions. This disruption can happen through altering normal hormone levels, stopping or stimulating the production of hormones, or changing the way hormones travel through the body, thus affecting the functions that these hormones control.
EDC’s are found in ingredients used in everyday plastics, personal care products, flame retardants, insecticides and more. In recent studies, health effects linked to low-dose exposure to EDC’s included reduced fertility, male and female reproductive tract abnormalities, miscarriages, menstrual problems, early puberty, brain and behavior problems, impaired immune function, obesity, diabetes and cancer.
Children are at higher risk because these chemicals can effectively interrupt various stages of development. Children also eat, breath and metabolize more than adults due to their rapid rate of growth, causing them to be even more susceptible.
How to Choose the Safest Plastics
Current regulation does not require that manufacturers label their products with materials used or recycling codes. If you do find recycling code labels they can be used to help as a general guide, but keep in mind that they are not definitive.
Additionally, silicone, glass, wood, and natural rubber are safer alternative choices that are not included in recycling categories. Learn more about silicone here.
#1 (PET or PETE) – Don’t Reuse
Polyethylene Terephthalate is fine for single use, but begins to break down when exposed to heat and harsh detergents in dishwashing cycles.
It’s commonly found in bottled water, soda bottles, cooking oil bottles, peanut butter jars and is highly recommended for skin care products containing essential oils.
#2 (HDPE), #4 (LDPE) and #5 (PP) – Safest, Can Be Reused
These plastics have never needed endocrine disrupting chemicals like BPA, BPS, phthalates or lead to function properly (whether for flexibility or rigidity purposes). They have a long track record of safety, so we feel comfortable recommending them.
They can be safely placed in dishwashers on the top rack, but should never be microwaved. Learn more about the how dishwashers and microwaves differ in the way they heat plastic here.
How to Avoid The Most Toxic Plastics
#3 PVC (Vinyl)
PVC is considered the most toxic plastic on the planet because it’s well-known for lead (and other heavy metals), phthalates (for flexibility), dioxin and off-gassing load of volatile organic compounds (VOC’s). These chemicals are well-established carcinogens and endocrine disruptors that wreak havoc on growing children, causing developmental damage, as well as damage to the liver, central nervous, respiratory and reproductive systems.
PVC (#3 recycling code) is found in an unthinkable number of everyday products and there are very few safer alternatives that really get the job done. This creates a nearly impossible task for concerned parents who would love to be able to make quick substitutions.
You can make a difference right away by keeping an eye out for these common sources of soft, flexible vinyl – the most problematic because of the stabilizers (like lead and other heavy metals) and plasticizers (like phthalates) required to make it more pliable.
- Inflatable toys, pools and air mattresses
- Teethers, baby dolls, actions figures and “rubber duckies”
- Waterproof mattresses, mattress covers and nap mats
- Vinyl flooring and window blinds
- Bath toys, bath seats, shower curtains and bath mats
- Commercial plastic cling wrap (not Saran wrap style plastic made for home use)
- Artificial Christmas trees
- Wall cling decorations
- Garden hoses
See our super in-depth guide about how to avoid toxic PVC plastic here.
#6 (Polystyrene) – Mostly Found in Disposable Products
Polystyrene plastic can leach a neurotoxin known as styrene and is commonly found in packaging pellets or “Styrofoam peanuts,” cups, plastic tableware, meat trays, to-go “clam shell” containers. Styrofoam cups, meat trays, and containers break down easily when coming in contact with hot, fatty foods.
Skip this toxic plastic by bringing your own to-go containers to the restaurant with you.
SOME #7 (Other) Plastics
The #7 recycling category serves as the catch-all for various types of plastic that don’t fit in the other classifications. Some of these plastics have endocrine disrupting chemicals like BPA (polycarbonate) and BPS (sometimes hidden in canned food linings and dollar bills), while some don’t (nylon, acrylic, ABS, SAN, EVA (PEVA), TPE, TPR, and bio-based plastics).
Research studies have made it abundantly clear that we should be avoiding BPA in polycarbonate plastic, but even BPA-free plastics are showing estrogenic activity, requiring even more caution with the #7 recycling category.
Now here’s where it gets tricky: the #7 recycling category includes several co-polymers made from currently undisclosed ingredients. That’s always a red flag, so we’re continuing to shy away from newer #7 plastics like Tritan because there have been some unsettling studies showing estrogenic activity. Theses studies still haven’t been followed up on by an independent third party, leaving us with a notable red flag. We’re looking forward to the day when we’ll have more concrete answers about it.
According to Mother Jones: The 200-plus samples of Tritan resins that were tested consistently leached estrogen-like chemicals after being exposed to a type of ultraviolet ray found in sunlight (UVA) and another kind that some parents use to sterilize baby bottles (UVC). In some cases, samples that hadn’t even been exposed to UV light also seeped estrogenic compounds.
Be especially careful of toxic plastic hiding in can linings and kitchen appliances. It’s tougher to avoid #7 plastics in blenders, but we still recommend you try to stick with glass or stainless options when possible.
Learn more about how to avoid toxic #7 plastics here, and check out our comprehensive guide to safer kitchen appliances here.
Insist on Transparency from Manufacturers
Keep in mind that you are voting with every dollar you spend. You’re telling the manufacturers of plastic products and the chemical industry what you will accept and what you won’t. The more you support the companies who have gone the extra mile to remove toxic chemicals from their products (and even label them in every once in awhile!), the more they’ll continue doing so.
Safer Products We’ve Already Confirmed for You
We’ve done an awful lot of research over the last 8 years to locate safer plastic products that are free of BPA, PVC, phthalates, melamine, and other worrisome #7 plastics. So take be sure to check our shopping guides first before buying food related products:
- A Comprehensive Guide to Choosing Safer Kitchen Appliances
- Safer Food Storage Container Guide
- Safer Kids Cup and Dish Guide
- Detox Mealtime with the Ultimate Safe Baby & Toddler Feeding Gear Guide
- Safer Food Dehydrator Shopping Guide
- Safer Dishes for Freezer Meals
- How to Avoid PVC in Plastic Food Wrap
- The Ultimate Toxic-free Coffee and Tea Maker Shopping Guide
- How to Choose Safe Containers for DIY Skincare Recipes
- Safer Bath Toy Guide
- How to Find a Non-toxic Artificial Christmas Tree
- PVC-free Wall Clings for a Healthy Nursery
- Are You Ruining Your Organic Garden with Toxic Plastic?
- In Search of PVC Free Non-Slip Bath Mats
- How to Choose PVC-free Pools, Floaties, Toys and Life Jackets
- How to Choose a Non-toxic Dishwasher