DIY





Dangerous Plastics, Safe Plastics

From toys to water bottles, we're all surrounded by dangerous plastics. Here’s how to choose safe plastics.

| August/September 2009

You’ve been out — working, exercising, shopping. You open the car door and slip into the ovenlike interior. Throat dry, you reach for the water bottle that’s been sitting in the cup holder all day. It’s warm. But at least it’s water, right? Water, yes, albeit water potentially spiked with chemicals that migrated out of the plastic — chemicals that aren’t good for your health.

The latest scientific research has given us a lot of good reasons to think carefully about how we use plastics. The main concern with several types of plastic is that they contain endocrine disruptors — substances that, when taken into our bodies, alter normal hormonal function. Over the past several years, scientists and the media have struggled to find answers to mysteries such as precocious puberty, declining fertility rates in otherwise healthy adults, hyperactivity in kids, the fattening of America, and the persistent scourges of prostate cancer and breast cancer. Although multiple factors play a role in all of these conditions, one recurrent theme is the brew of endocrine disruptors infiltrating our lives.

Effects of Endocrine Disruptors

Endocrine disruptors (which are now widespread in food, water, soil and even the air we breathe) include a long list of chemicals such as dioxins, cadmium, parabens, bisphenol A, phthalates, polychlorinated biphenyls (PCBs), agricultural chemicals, polybrominated flame retardants, and some of the active ingredients in sunscreens.

Many of these chemicals cause problems because they can mimic the action of natural estrogen. These foreign estrogens (also known as xenoestrogens) can upset normal hormonal balance, stimulate the growth and development of reproductive tumors (breast, uterine, prostate), impair fertility, and disrupt pregnancy. Worse, many can cross the placenta to affect the fetus and get into breast milk. Chemicals such as phthalates have an antiandrogenic effect, meaning they interfere with testosterone and other hormones responsible for male sex characteristics. Exposure to these agents during fetal life and early childhood can derail normal sexual development and heighten the risk for diseases that don’t become apparent until adulthood, such as cancer.



Problems with BPA

One of the most troubling endocrine disruptors is a common ingredient in plastic called bisphenol A (commonly called BPA). According to Laura N. Vandenberg, who holds a doctorate in cell, molecular and developmental biology and works at the Center for Developmental and Regenerative Biology at Tufts University, “BPA is one of the highest volume chemicals produced worldwide, with over 6 billion pounds produced each year.”

Used to produce polycarbonate plastics and epoxy resins, BPA is found in many drinking containers, the lining of most food and beverage cans (including soda cans), bottle caps, plastic cutlery, plastic food storage containers, toys, dental sealants, some dental composites, water pipes, eyeglass lenses, and more. Polycarbonate is often blended with other plastics to create products such as mobile phone cases, car parts, electronic equipment, medical equipment, and household items. Because BPA is in printer ink, newspapers, and carbonless receipts, most recycled paper contains it, including paper towels and paper used to contain food.

Kat
4/6/2016 5:59:07 PM

Once I discovered that I am allergic to titanium, and zirconium (on top of every metal known to man), had no other alternative, but to extract all teeth, and the implants. Now I am searching for denture materials that are not harmful. Have always known was allergic to nylon, rayon, and polyester, now test shows acrylic as well. Any suggestions?


Vaughn
2/11/2016 10:21:15 PM

I use plastic tarps to cover my garden in the winter to prevent weeds, leeching nutrients, and keeping it dry so I can work it at anytime rather than wait till June for the rains of the NW to stop and the soil to dry out. Are there any studies that show that plastics used on soil migrate into the food?


Rafael
5/21/2014 8:47:48 AM

Well mentioned types of plastics which is dangerous for human life. I would also like to mention some like the ones been used in the pools, We should always try to avoid using plastics in pool as they cause harmful effect on kids. Its always advisible to take help of http://beachwoodpools.com/ and get your pool serviced.







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