Plastic doesn’t decay…it breaks into smaller and smaller bits until you can no longer see it. We call these microplastics. And these tiny particles are making their way into our drinking water—and our bodies. They can take hundreds of years to decompose, if they do... Plastics have only been around for 50 years, so that's just an estimate. The bigger problem is that they are not inert…plastics contain substances that can compete and interfere with our hormones.
You don’t have to ingest the actual plastic for it to affect your health either. Substances, sometimes called “plasticers” that keep the plastic soft and flexible can be transferred into your food when you cook, store or serve food in plastic. These fat-soluble chemicals can mix with oily or fatty foods and your body can store them in fatty areas. Hot food, fat or oils, and damage to the surface of the plastic makes it easier for chemicals to transfer into food. Softer plastics are thought to transfer their chemicals more readily.
Plastic in our food
Sometimes you can even taste the plastic…coffee in a Styrofoam cup, a dairy that always sold their chocolate milk in glass bottles because they noticed plastic ones affected the taste. I even noticed water, served in a scratched plastic pitcher at a conference, tasted strongly—unpleasantly—of plastic. I didn’t drink it.
We’ve all put tomato sauce into a plastic container and noticed the orange colour became imbedded into the walls of the container. Plastic takes up oily substances, just as its chemicals pass into fatty foods. Questions have been raised about other substances plastics in the environment could be absorbing and transporting. The United Nations Food and Agriculture Organization is concerned that some plastic particles may be small enough to pass into our bloodstream and collect in our organs where chemicals they contain can gradually leach into our system.
Plastic can affect our hormones
Some of these chemicals are “hormone disruptors”…chemicals that interfere with how your hormones act in your body. And some, like bisphenol A (BPA) have been linked to hormone-related cancers and possible effects on unborn babies because of their hormone-like activity. More study is needed on the health effects of plastics.
Results of a new study conducted by Orb Media, a partner of CBC News, found microplastics in 93% of 11 brands of bottled water they tested from 9 different countries. They were only able to identify particles 100 microns (0.1mm) or larger. It seems likely that there were more smaller particles they were unable to detect.
They defined microplastics as pieces of plastic 5mm or smaller. They are created when plastic waste disintegrates and were also manufactured for use in exfoliant skin care products. The European Food Safety Authority has suggested that most swallowed microplastics are excreted by the body, but researchers have found microplastic beads from skin care products in stomachs of fish in the Grand Lakes. This has lead to banning of these beads in commercial products.
Plastic "islands"
Plastic waste continues to build in coastal waters. Researchers estimate that by 2050 there will be more plastics in the oceans than fish. Ocean currents cause them to collect in some areas, creating plastic “islands”. They block the sun’s rays from entering the water and trap sea life.
It’s easy to think we can’t be ingesting enough plastic to harm us. But we humans are at the top of the “food chain”—everything our food sources take up we consume and concentrate. We need to pay attention to what we put into the environment…and to what we are essentially “feeding” our food!
You can help...
This weekend, go buy yourself a water bottle made of glass, metal or ceramic and stop buying bottled water. If your tap water at home has an unpleasant taste, get a water filter. It’s a simple thing you can do to save the environment, save money, and save your health at the same time.
References:
Exposure to Chemicals in Plastic – Breast Cancer.org http://www.breastcancer.org/risk/factors/plastic
CBC: Microplastics article http://www.cbc.ca/news/technology/bottled-water-microplastics-1.4575045
