Claim: Reusing, freezing, or heating plastic water bottles will cause them to break down into carcinogenic compounds or release dioxins.
|FALSE: Reusing single-use PET bottles causes them to release carcinogenic DEHA into the fluids they contain.|
|FALSE: Freezing plastic water bottles causes them to release carcinogenic dioxins into the fluids they contain.|
|UNDETERMINED: Heating up some types of plastic bottles could increase the leaching of harmful phthalates into the fluids they contain.|
No water bottles in freezer. A dioxin chemical causes cancer, especially breast cancer. Dioxins are highly poisonous to the cells of our bodies. Don't freeze your plastic bottles with water in them as this releases dioxins from the plastic.
[Collected via e-mail, 2004]
Many are unaware of poisoning caused by re-using plastic bottles. Some of you may be in the habit of using and re-using your disposable mineral water bottles (eg. Evian, Aqua, Ice Mountain, Vita, etc), keeping them in your car or at work. Not a good idea. In a nutshell, the plastic (called polyethylene terephthalate or PET) used in these bottles contains a potentially carcinogenic element (something called diethylhydroxylamine or DEHA).
The bottles are safe for one-time use only; if you must keep them longer, it should be or no more than a few days, a week max, and keep them away from heat as well. Repeated washing and rinsing can cause the plastic to break down and the carcinogens (cancer-causing chemical agents) can leach into the water that YOU are drinking. Better to invest in water bottles that are really meant for multiple uses. This is not something we should be scrimping on. Those of you with family — please advise them, especially for their children's sake.
[Collected via e-mail, 2007]
Do Not Drink Water Bottles Left in the Car
This information was given to me by my husband and I know all the ladies in my life should know and please forward it to all the ladies in your life.
My husband has a friend whose mother recently got diagnosed with breast cancer. The doctor told her women should not drink bottled water that has been left in a car. The doctor said that the heat and the plastic of the bottle have certain chemicals that can lead to breast cancer. So please be careful and do not drink that water bottle that has been left in a car and pass this on to all the women in your life.
[Collected via e-mail, 2009]
On the Ellen show, Sheryl Crow said this is what caused her breast cancer. It has been identified as the most common cause of the high levels of dioxin in breast cancer tissue. Sheryl Crow's oncologist told her: women should not drink bottled water that has been left in a car. The heat reacts with the chemicals in the plastic of the bottle which releases dioxin into the water. Dioxin is a toxin increasingly found in breast cancer tissue. So please be careful and do not drink bottled water that has been left in a car. Pass this on to all the women in your life.
Origins: Sorting out the various claims made about potential health issues associated with plastic water bottles is a difficult process, both because so many different claims about them are circulated and because the generic term "plastic bottle" can in fact
Water, soda, and juice are typically sold in bottles made from polyethylene terephthalate, also known as PET or PETE. These containers are intended to be disposable, single-use bottles, although many consumers wash them and re-use them to hold drinking water or other beverages. Some of the example items reproduced above claim that freezing or
In 1991, on the basis of very limited data, the U.S. Environmental Protection Agency classified DEHA as a "possible human carcinogen." However, in 1995, EPA again evaluated the science and concluded that " ... overall, the evidence is too limited to establish that DEHA is likely to cause cancer."
Further, DEHA is not inherent in PET as a raw material, byproduct or decomposition product.
Moreover, DEHA has been cleared by FDA for food-contact applications and would not pose a health risk even if it were present.
Finally, in June 2003, the Swiss Federal Laboratories for Materials Testing and Research conducted a scientific study of migration in new and reused plastic water bottles from three countries. The Swiss study did not find DEHA at concentrations significantly above the background levels detected in distilled water, indicating DEHA was unlikely to have migrated from the bottles. The study concluded that the levels of DEHA were distinctly below the World Health Organization guidelines for safe drinking water.
A: This is an urban legend. There are no dioxins in plastics. In addition, freezing actually works against the release of chemicals. Chemicals do not diffuse as readily in cold temperatures, which would limit chemical release if there were dioxins in plastic, and we don't think there are.
Last updated: 13 April 2014
Cassutt, Melissa. "Glass Bottles Pacify Fear of Chemical." The [Colorado Springs] Gazette. 25 June 2007. Merle, Renae and Ylan Q. Mui. "For Parents, Bottle Safety Still Unclear." The Washington Post. 22 August 2007 (p. D1). Pelletier, Jenna. "A User's Guide to Plastic." The Boston Globe. 28 September 2008. Associated Press. "FDA: BPA banned in Baby Bottles." NBCNews.com. 17 July 2012. CBC News. "Study Links Plastics Chemical with Cancer." 28 August 2006.