Sunday, May 9, 2010
Just a thought......
My other realization while looking at pictures of pollution is that all of those "disgusting" places used to look just like our much desired images of relaxing, exotic getaways. Humans have successfully turned this desired beauty that used to be next door into bubbling cesspools of toxic waste and disease. Below are more images of places that used to be beautiful, thriving, natural places full of life and sustenance (many of which are in Hawaii). We are a disgusting creature and I really hope others begin to see the light as well. Educate. Inform. Act.
Wednesday, May 5, 2010
Plastic Toxins and Labels
The use of plastic in cooking and food storage can carry health risks because a myriad of petroleum-based chemicals go into their manufacturing. Some of these chemicals can leach into food and drinks causing negative health impacts. Leaching increases when the plastic comes into contact with oily or fatty foods during heating, and this is greatly exaggerated if there are any scratches or damage to the plastic.
In addition to the negative health impacts of our direct contact to plastic products, we also have to consider the health impacts of secondary exposure from the plastic waste in our environment. Many types of plastic have been outlawed in a handful of countries due to their toxicity, but we still feel the impact in our food supply. Years ago, before oceanic dumping and waste disposal was heavily regulated, much of our plastic waste was dumped without a second thought about the possibility of it ending up on our plates once it photodegrades and the toxins circulate throughout our food supply.
All plastic products are labeled with the following symbols. I have listed common products made from these materials and the suggested negative health impacts of exposure to each. The most important ones to avoid are in red.
PETE: Polyethylene terephthalate ethylene, used for soft drink, juice, water, detergent, cleaner and peanut butter containers.
- PET may contain endocrine disruptors under conditions of common use. Pthalates can be leached and made worse as a result of storage temperature and duration.
HDPE: High density polyethylene, used in opaque plastic milk and water jugs, bleach, detergent and shampoo bottles, folding chairs, hula hoops, composite wood, water pipes for domestic water supply and some plastic bags.
- HDPE is made from petroleum and requires 1.75kg of petroleum to produce 1kg of HDPE. This plastic doesn't seem to leach as badly as the others and is considered a "safer" alternative.
PVC or V: Polyvinyl chloride, used for clingwrap, shower curtains, upholstery, inflatable toys, some plastic squeeze bottles, figurines, adult sex toys, cooking oil and peanut butter jars, detergent and window cleaner bottles. PVC is the least recyclable plastic. DEHA is one of several plasticizers used to soften PVC.
- DEHA can leach into oily foods on contact and when heated and exposure is linked to negative effects on the kidney, spleen, bone formation and body weight as well as being a carcinogen which affects the liver. PVC needs additives and stabilizers to make it useable. (Lead is often added for strength, while plasticizers such as DEHA are added for flexibility.) Dioxin in air emissions from PVC manufacturing settles on grasslands and accumulates in meat and dairy products. Dioxin is a known carcinogen and low level exposures are also linked to decreased birth weight, learning and behavioral problems in children, suppressed immune function and hormone disruption.
LDPE: Low density polyethylene, used in grocery store bags, 6-pack soda can rings, computer components, the "cardboard" of milk and juice cartons, playground slides, plastic bags, most plastic wraps and some bottles.
- This product is also made from petroleum and although it is considered another "safe" option, with regards to toxicity, it is a large source of plastic pollution and is not considered biodegradable (it takes several centuries to efficiently degrade).
PP: Polypropylene, used in most Rubbermaid, deli soup, thermal underwear, carpet, syrup and yogurt containers, straws and other clouded plastic containers, including baby bottles.
- This plastic is also considered one of the "safer" options with regards to toxicity, but environmental pollution and contamination is still a major concern.
PS: Polystyrene, used in Styrofoam food trays, egg cartons, meat trays, disposable cups and bowls, carry-out containers and plastic silverware, disposable razors, CD and DVD cases and "packing peanuts".
- This is another form of plastic manufactured from petroleum and is the most widely used. Styrene can leach from this plastic and is toxic to the brain and nervous system and can cause menstrual disorders. It has also been found to adversely affect red blood cells, liver, kidneys and stomachs in animal studies. In addition to exposure from food containers. This type of plastic also does not biodegrade and is a major source of pollution.
Other: Usually polycarbonate, used in most plastic baby bottles, 5-gallon water bottles, “sport” water bottles, metal food can liners, clear plastic “sippy” cups and some clear plastic cutlery. New bio-based plastics may also be labeled #7.
- Bisphenol-a (BPA) can leach from polycarbonate plastic and mimics the action of the hormone estrogen. Human exposure to BPA is widespread and a CDC study in 2005 found this chemical in the urine of 95% of the adults sampled. It has also been found in the blood of pregnant women, in umbilical cord blood and in the placenta, and all were at levels which altered development in animal studies.Early-life exposure to BPA can cause genetic damage. Other affects include: obesity, breast and prostate cancer, miscarriage, schizophrenia, early onset of puberty, decrease in testosterone, increased prostate size, decreased sperm production, altered immune function, hyperactivity, and many more conditions.
Saturday, May 1, 2010
The Effect of the Great Pacific Garbage Patch
Instead of being biodegradable, plastics are photodegradable, which means they are broken down by exposure to sunlight. The other critical difference is that, where biodegradable substances are returned to the life cycle in the form of natural chemicals, photodegradable plastics are just broken down into smaller and smaller pieces, creating a large volume of molecular-sized synthetic polymers.
Polymers absorb and create different chemicals, some of which are nonylphenols (endocrine disruptors), PCBs (cause liver damage, anemia, migraines, thyroid disorders, immune suppression, alteration of estrogen levels, birth defects), and DDT (neurotoxicity, miscarriage, cancer, thyroid and endocrine disorders). When plastic in the ocean is eaten by living organisms, the toxic chemicals within are released into that organism. In phytoplankton, toxic chemicals are consumed and then passed long the food chain up to higher trophic levels, and the concentration of these chemicals increases exponentially at each level, in a process called biomagnification.
In the above image, replace the porpoise with a person. It's then common sense to realize the amplification of these toxins can have profound effects on higher organisms, which unfortunately means us. Do your part and reduce the amount of plastic in your life. It's not enough anymore to just recycle it and take comfort in another form of "away." Unfortunately, due to the current plastic pollution crisis, no one in the future will be spared from this toxic oversight, but we CAN make a commitment to preventing it from becoming worse. The future of your family, the people of the world and the health of our planet is in your hands.
Thursday, April 29, 2010
Don't take too much comfort from your recycling bin.
Wednesday, April 28, 2010
What does plastic taste like?
Unfortunately, plastic doesn't biodegrade, it photodegrades. This means when exposed to the sun, it breaks down into smaller and smaller toxic pieces which contaminates the soil and waterways as well as entering the food chain when animals accidentally or even intentionally ingest it.
This plastic can also act as a chemical sponge soaking up and concentrating hundreds of nasty toxins which then enter the food chain with a devastating impact on marine life, birds, and eventually returning back to us in new deadly forms. Plastic Resin Pellets ("nurdles") absorb and concentrate toxins such as PCB & DDE up to ONE MILLION times their level in ambient sea water.
So asking what plastic tastes like may sound like a silly question, but it's an important one when you realize that most food products have been highly impacted by our wasteful ways.
So where is "away"?
Pristine, untouched locations are the images that are presented to us by travel companies and commercials. How would your opinion change if you were planning a trip to these locations:
Unfortunately, as our population grows and corporations look for cheaper and cheaper options to increase profitability, plastic has become the most widely used material for single serving items. Yogurt containers, straws, water bottles, shopping bags, to-go cups, spoons, forks, knives, water glasses to accompany water dispensers, diapers, milk jugs, egg cartons, gum packages, sandwich bags, saran wrap, tupperware, garbage bags, dog poop bags, yard clipping bags, straw covers, condoms, cigarette pack wrapping, toy and tool packaging, chip bags, and the list goes on and on and on...... It's safe to assume that 75% of plastic is designated for a single use, and then it goes right into the garbage. It would be great if our garbage cans were black holes or vaporizers that could make anything disappear, but this is not the case. The general public seems to think "away" means "gone forever" when they use the phrase "throw it away". In reality, we're all contributing to a global crisis involving plastic pollution. We're reaching a threshold where all of a sudden, "away" isn't quite as far or permanent as we all assumed. Plastic never biodegrades, and its stubborn presence is making our planet very ill. Our land, water, animals and families are feeling the effect of years of living with an out-of-sight, out-of-mind philosophy, and this is something we can no longer afford.