Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Health & Baby

Font Size

Hot Liquid Ups BPA From Plastic Bottles

Study: Chemical Released More Quickly With Boiling Liquids; Risk to People Not Clear
WebMD Health News
Reviewed by Louise Chang, MD

Jan. 30, 2008 -- Pouring boiling liquid into reusable water bottles or baby bottles made of polycarbonate plastic causes a much faster release of the estrogen-mimicking chemical bisphenol A, new research shows.

University of Cincinnati researchers reported that exposure to boiling water caused polycarbonate drinking bottles to release bisphenol A (BPA) up to 55 times more rapidly than exposure to cool or temperate water.

The jury is still out on whether BPA exposure poses a health risk to humans, even though the question was the subject of two expert panel reviews in the U.S. last year.

More than 6 billion pounds of bisphenol A are produced and used each year in the manufacture of the resins used to line food cans and in polycarbonate products. Almost everyone has measurable amounts of the man-made chemical in their blood, the CDC says.

It has long been known that BPA can cause genetic damage in lab animals, but it is not clear if the levels of leached BPA from polycarbonate bottles and other products are high enough to pose a threat to humans.

BPA at High Temperatures

Scott M. Belcher, PhD, who led the study team, tells WebMD that while there is little direct evidence that BPA poses a risk to humans, many experts believe that it does.

"The consensus of the scientific community is that there is a clear reason to proceed cautiously," he says.

But Steven G. Hentges, PhD, who is executive director of the American Chemical Council's Polycarbonate/BPA Global Group, disagrees.

Hentges tells WebMD that the finding that BPA leaching accelerates at high liquid temperatures is nothing new, having been reported in numerous previous studies.

"The bisphenol A levels seen under heating conditions are still extraordinarily low and far below levels that have been determined to be safe by government bodies," he says.

The popularity of reusable, plastic polycarbonate drinking bottles has grown with rising concerns about the environmental impact of disposable plastic bottles.

Plastic water and soda bottles manufactured for one-time use are not made with polycarbonate plastic. But many baby bottles and those hard water bottles sold in outdoor and athletic stores are.

1 | 2 | 3

Baby's First Year Newsletter

Because every week matters, get expert advice and facts on what to expect in your baby's first year.

Today on WebMD

mother on phone holding baby
When you should call 911.
parents and baby
Unexpected ways your life will change.
baby acne
What’s normal – and what’s not.
baby asleep on moms shoulder
Help your baby get the sleep he needs.

mother holding baby at night
mother with sick child
Chinese mother breast feeding newborn baby girl
Track Your Babys Vaccines
Baby Napping 10 Dos And Donts
Woman holding feet up to camera
Father kissing newborn baby
baby gear slideshow