Monday, March 25, 2013

CSI: Where in the World Are All the Chemicals?


There could be chemicals locked away in here and you would never know it. 


            “Don’t play on the grass for the next few days, kids! Make sure you leave your shoes outside before coming into the house!” These were common words from my dad during the warmer months when he was sprinkling fertilizer on the front and backyard lawn. A sign taped to the front door advising us to take our shoes off before entering the house always accompanied these words. As a child, I viewed this as an annoyance and was mad that I could not play outside with the dirt and bugs. In addition, I thought that as long as I followed these simple rules when it was fertilizing season, I was safe from these toxins. These rules placed a barrier between humans and chemicals that were supposed to stay outside, well, because why wouldn’t they?
            As I grew older, I was told to throw away any non-stick pans that were scratched because chemicals would be released. Don’t put plastics in the microwave. Don’t leave water bottles in your car because the heat will release chemicals from the bottle. Look for BPA-free labels when purchasing a reusable water bottle. I followed these directions but didn’t really know exactly what these chemicals were, how they affected humans, why they were even in these materials in the first place, and where the EPA was in all of this. Isn’t it their job to make sure that any chemicals used are safe? I didn’t realize until very recently that humans and chemicals are interconnected to a degree that is quite unsettling.
            The chemical I found most interesting is BPA or Bisphenol A. First synthesized in 1891, it is an artificial estrogen that is primarily used in the creation of epoxy resins because it holds materials together well. It is in the linings of metal food containers, aluminum water bottles, plastics that are labeled #7, fax paper, CD’s and other items. It has been detected in rivers, soil, household dust, and even in amniotic fluid surrounding babies. One study found BPA in 95% of 400 American adults. For many years, exposure to this chemical has been associated with cancer, insulin resistance and birth defects. Tests beginning in the 1930’s showed that high doses are toxic to rodents and a very interesting discovery is that low-doses given to mice produced worse effects than those mice exposed to high doses. You may be wondering why such a harmful chemical is even allowed in products because I certainly was. Interestingly enough, industrial chemicals are regulated by the Toxic Substances Control Act of 1976, which doesn’t require that they be tested or proven safe before being used. Instead, it is the EPA’s job to show that a chemical is unsafe before it can regulate or ban that chemical. However, the bar is set so high that the EPA can essentially never meet these standards. According to “Cleaning House,” a session in the Northwest Earth Institute’s course book, “Congress’s original rationale for giving pass to industrial chemicals like BPA is that they weren’t designed to be biologically active or get into our body in the same way pesticides or drugs would, and wouldn’t pose the same risks.” This sounds like a fantastic rationale to me.
            The next time I get my blood taken, I will wonder how many trace amounts of chemicals, including Bisphenol A (BPA) and endocrine-disrupting chemicals (EDC) will end up in that sample. I will wonder how much BPA is in the supermarket when I go shopping, looking at the many aisles of canned products. It is alarming to learn that a biomonitoring report in 2009 detected more than two hundred environmental toxins in the cord blood of newborn babies. Is there any escape from these chemicals that are supposed to stay outside and removed from our daily lives?
            Aside from this doom and gloom from products that are very much a part of our routine, my eyes have been opened to the realization that we have more control than we think. The first step is to understand these chemicals, the products that contain them and how to limit our exposure to them. Simple lifestyle switches such as keeping a clean house to remove exposure, obtaining a stainless steel reusable bottle instead of plastic or aluminum, buying fresh, frozen, dried food or items packaged in glass jars rather than plastic and avoiding personal care products that list “fragrance” as an ingredient are all ways to take your health into your own hands. Furthermore, a motivating alternative to current commercial synthetic chemistry is green chemistry. This approach focuses on preventing chemical pollution by designing products that do not contain them in the first place. It sounds like a no-brainer right? I’ve learned that we can apply this principal to own lives. Avoid products that expose us to harmful chemicals so the likelihood of being affected by them is minimal. It’s not my family’s fault for fertilizing our lawn with substances that have the potential to cause harm. The important lesson to learn is that knowledge of these substances must spread so you no longer have to place a “Fertilizer Down: Stay Off Grass” sign on the door.


                                                                              - Liana M. Agrios

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