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Why you should choose plastic carefully
You should avoid any plastic designated #7, #3 and #6. Plastic that are safe, or at least relatively so are #1, #2, #4 and #5. In terms of the specific themselves the most hazardous are polyurethanes, PVC, and styrene copolymers. You will find these designated numbers on the product itself, i.e. at the bottom of plastic bottles, etc.
The toxicity of plastics is not fully understood or adequately tested. What we do know is that most plastics contain chemical additives to change the quality of the plastic for its intended use (examples are to make it softer or resistant to UV light). Some of these ingredients or additives we know are harmful, like the plastics chemical bisphenol-A (BPA) and the plastic softeners called phthalates.
We also know that plastics chemicals routinely migrate, or leach, into the food and water they contain. While the amount may be small, it has not been proven safe. Plastics are continually changing and there are unknowns. Use them with
caution, especially those that are commonly found in our households and have contact with our food and our bodies.
Choose and use safer plastics – where it matters most
Because plastics are ubiquitous today, choose them carefully to minimise your exposure. Avoiding them altogether isn’t practical, so we suggest you focus on those that are likely to come into contact with your mouth – the most common way chemicals in plastic consumer products enter the body. Plastic chemicals touch your mouth in number of ways: from your hands and your food and drink. This is especially important for young children, who frequently put hands and objects in their mouth.
Stay away from toys marked with a “3” or “PVC” (polyvinyl chloride, commonly called vinyl). PVC is often mixed with phthalates, a toxic additives that makes plastic more flexible.
Avoid polycarbonate containers (sometimes marked with a #7 or “PC”). These plastics are rigid and transparent, like plastic food storage containers and water bottles, among other things. Trace amounts of BPA can migrate from these containers, particularly if used for hot food or liquids. Soft or cloudy-coloured plastic does not contain BPA.
We recommend the use of glass and ceramic instead of plastics. When you have no choice plastics marked with a #1, #2, #4 or# 5 don’t contain BPA and may be better choices.
When you do use plastics, handle them safely. We suggest that you: