BPA From Plastic Baby Bottles: A Growing Health Menace

May 22, 2009

(ChattahBox)—An alarming new study from the Harvard School of Public Health, proves that the toxic chemical bisphenol A or BPA leaches from hard plastic bottles into the drinking liquid and enters urine at high levels.

With many plastic baby bottles made from polycarbonate plastics containing BPA, the results of this study point to a growing health menace that cries out for government intervention at the federal level.

Numerous studies have shown that exposure to BPA affects reproductive development in animals and is linked to cardiovascular disease, diabetes and breast cancer in humans.

BPA has been shown to act as an endocrine-disruptor in animals, causing early onset of sexual maturation, altered development and decreased sperm production in offspring. The chemical is believed to be particularly harmful in the early stages of development.

Scientists are concerned that Infants are highly susceptible to BPA’s harmful endocrine-disrupting qualities.

Head researchers Jenny Carwile, doctoral student and Karin B. Michels, professor of epidemiology at Harvard Medical School, conducted the study by recruiting 77 Harvard College students. They were made to first flush out their systems by drinking all cold beverages from stainless steel bottles for seven days. Urine samples were obtained from the students.

The study participants were then provided with two polycarbonate bottles to drink all cold beverages from for the following week. Additional urine samples were obtained and compared with the previous samples, which were tested for BPA levels before drinking from plastic bottles.

The results showed urinary BPA concentrations increased a whopping 69 percent after drinking from the polycarbonate bottles.

Previous studies proved that BPA could leach from polycarbonate bottles into the drinking liquid. This is the first study to show an increase in urinary BPA concentrations in humans. And it’s alarming.

Studies have shown that heating the plastic bottles increases the level of BPA released into the bottle’s contents. Many plastic baby bottles are heated.

Canada banned BPA in polycarbonate baby bottles in 2008 and many states are now considering instituting bans.

The students in the study were told to not wash their bottles in dishwashers nor put hot liquids in them. If they had, the levels of BPA in their urine would have been much higher.

Plastic bottles with the recycling number 7 on the bottom contain BPA. The chemical is also found in dentistry composites and sealants and in the lining of aluminum food and beverage cans.

The full study is available in recent edition of the journal for Environmental Health Perspectives.

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One Response to “BPA From Plastic Baby Bottles: A Growing Health Menace”

  1. Dentistry - Q&A: NHS dentistry - BBC News « Dentistry on May 22nd, 2009 6:21 pm

    […] BPA From Plastic Baby Bottles: A Growing Health Menace – Chattahbox.com(ChattahBox)—An alarming new study from the Harvard School of Public Health, proves that the toxic chemical bisphenol A or BPA leaches from hard plastic bottles into the drinking liquid and enters urine at high levels. With many plastic baby […]

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