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Title : Scary New Study: Plastic Bottles Left in the Sun Leach Cancer-Causing Chemicals Into Water
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Scary New Study: Plastic Bottles Left in the Sun Leach Cancer-Causing Chemicals Into Water

Plastic Water Bottles exposed to Heat can be Toxic

Takeaway First

Don’t drink water from plastic bottles left in a hot place for a long time. Chemicals in plastics, mainly antimony (Sb) and Bisphenol A (BPA) can leach into any liquid in a plastic bottle according to new research, and those chemicals can potentially cause diseases (such as cancer) when consumed, based on other research.

Study Details

•    16 plastic water bottles were exposed to different temperatures: 39°F (4°C), 77°F (25°C), and 158°F (70°C).
•    Levels of BPA and antimony were checked after one, two, and four weeks.
•    Antimony concentrations in the water from plastic water-bottles averaged 3.18 ng/L at 39.2°F (4°C), and 6.88ng/L at 77°F (25°C).
•    At 158°F (70°C) (about the temperature in a car on a hot summer day), levels of antimonyin water increased significantly to 38.5 ng /L.
•    Levels of antimony in one of the sixteen water bottles increased to 2604 ng/L.

What does this mean to you?

The surge of plastic as a commodity was highlighted in the 1967 film The Graduate. Do you remember The Graduate, starring a young Dustin Hoffman as Benjamin? There is a scene in this film where Benjamin, a recent college graduate with no well-defined aim in life, is pulled aside by a businessman, Mr. McGuire, where this dialogue takes place:

Mr. McGuire: I just want to say one word to you. Just one word.
Benjamin: Yes, sir.
Mr. McGuire: Are you listening?
Benjamin: Yes, I am.
Mr. McGuire: Plastics.
Benjamin: Exactly how do you mean?
Mr. McGuire: There’s a great future in plastics. Think about it. Will you think about it?

Indeed, plastics is big business.  But what is the real price of this cheap material?

Virtually all plastic water bottles are made from polyethylene terephthalate (PET) and typically contain 190–300 mg/kg of antimony. Bottled waters become contaminated during storage due to a release of antimony from PET plastic. Actually, almost all packaged drinks are made from PET plastic.  This includes milk, coffee, and acidic juice, among types of food containers.

I am guilty of leaving water bottles in my car, but this past summer I wised up and left them in a cooler filled with ice.  And yes, I changed the ice weekly after it melted. The temperature in the car can reach 167°F (75°C) at an ambient temperature of 91°F (33°C) in the summer.  This research shows that storing water in plastic bottles at high temperatures may enhance contaminant release into water from PET bottles.

Antimony (Sb)

Antimony is classified as a possible carcinogen to humans by the International Agency for Research on Cancer.  Long-term exposure to elevated antimony can also lead to increased blood cholesterol and decreased blood sugar.

A guideline value of 20 µg/liter (rounded figure) can be derived from this TDI by assuming a 60-kg adult drinking 2 liters of water per day and allocating 10% of the TDI to drinking-water. It should be noted that this value could be highly conservative because of the nature of the end-points and the large uncertainty factor; further data could result in a lower uncertainty factor.

Bisphenol A (BPA)

BPA in all sixteen bottles rose significantly amount increased at 158 F (70 C) to an average of 23.4/ ng/L.

BPA is a key ingredient in modern plastics found and the inner lining of canned foods, and it may act as hormone disrupter where synthetic chemicals called xenoestrogens (synthetic estrogen) mimic estrogen and attach to estrogen receptors (fooling the body into thinking its estrogen). This process interferes with the normal functioning of hormones. One study in prostate cancer cells showed that very low concentrations of BPA activated the androgen receptor and initiated proliferation of cancer cells, independent of testosterone (Wetherill et al. 2002).

BPA is found in plastics and canned goods. Canned goods of tomato sauce, vegetables and soups may contain the chemical in the inner lining called epoxy resins to avoid corrosion of the metal. Epoxy resins are filled with BPA.

BPA enters the body when, let’s say, a plastic water bottle, is washed, heated or stressed, allowing the chemical to leach into the liquid and then enter the body.

Source : 

http://theheartysoul.com/

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