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Earth Talk

by The Editors of The Environmental Magazine


Dear EarthTalk: Is it true that some baby bottles contain chemicals that can cause health problems for babies? If so, how can I find alternatives that are safer? -- Amy Gorman, Berkeley, CA

No links connecting specific human illnesses to chemicals oozing out of baby bottles have been proven definitively. Nonetheless, many parents are heeding the call of scientists to switch to products with less risk. A 2008 report by American and Canadian environmental researchers entitled “Baby’s Toxic Bottle” found that plastic polycarbonate baby bottles leach dangerous levels of Bisphenol-A (BPA), a synthetic chemical that mimics natural hormones and can send bodily processes into disarray, when heated.

All six of the leading brands of baby bottles tested—Avent, Disney/The First Years, Dr. Brown’s, Evenflo, Gerber and Playtex—leaked what researchers considered dangerous amounts of BPA. The report calls on major retailers selling these bottles—including Toys “R” Us, Babies “R” Us, CVS, Target, Walgreens and Wal-Mart—to switch to safer products.

According to the report, BPA is a “developmental, neural and reproductive toxicant that mimics estrogen and can interfere with healthy growth and body function.” Researchers cite numerous animal studies demonstrating that the chemical can damage reproductive, neurological and immune systems during critical stages of development. It has also been linked to breast cancer and to the early onset of puberty.

So what’s a concerned parent to do? Glass bottles are a tried-and-true chemical-free solution, and they are widely available, though very breakable. To the rescue are several companies making BPA-free plastic bottles (out of either PES/polyamide or polypropylene instead of polycarbonate). Some of the leaders are BornFree, thinkbaby, Green to Grow, Nuby, Momo Baby, Mother’s Milkmate and Medela’s. These brands are available at natural foods stores, directly from manufacturers, or from online vendors.

Most of the major brands selling BPA-containing bottles are now also offering or planning to offer BPA-free versions of their products. Consumers should read labels and packaging carefully to make sure that any product they are considering buying says unequivocally that it does not contain the chemical.

Unfortunately, switching to a BPA-free bottle is no guarantee the chemical won’t make its way into your baby’s bloodstream anyway. BPA is one of the 50 most-produced chemicals in the world. According to the Natural Resources Defense Council (NRDC), it is used in everything from plastic water jugs labeled #7 to plastic take-out containers, baby bottles and canned food liners. It is so omnipresent that the Centers for Disease Control & Prevention (CDC) has found that 95 percent of Americans have the chemical in their urine.

Also, nursing mothers—especially those who haven’t discarded their old BPA-containing Nalgene water bottles—may be passing the chemical along through their breast milk. And if that weren’t enough, BPA is also used in the lining of many metal liquid baby formula cans. The nonprofit Environmental Working Group (EWG) has posted email links to the consumer affairs offices of the major formula manufacturers so concerned parents can ask them to remove BPA from their product offerings and packaging.

CONTACTS: Baby’s Toxic Bottle Report, www.chej.org/documents/BabysToxicBottleFinal.pdf; NRDC, www.nrdc.org; CDC, www.cdc.gov; EWG, www.ewg.org.

GOT AN ENVIRONMENTAL QUESTION? Send it to: EarthTalk, c/o E/The Environmental Magazine, P.O. Box 5098, Westport, CT 06881; submit it at: www.emagazine.com/earthtalk/thisweek/, or e-mail: earthtalk@emagazine.com. Read past columns at: www.emagazine.com/earthtalk/archives.php.


EarthTalkTM
From the Editors of E/The Environmental Magazine

Dear EarthTalk: How much “old growth” forest is left in the United States and is it all protected from logging at this point? -- John Foye, via e-mail

As crazy as it sounds, no one really knows how much old growth is left in America’s forested regions, mainly because various agencies and scientists have different ideas about how to define the term. Generally speaking, “old growth” refers to forests containing trees often hundreds, sometimes thousands, of years old. But even when there is agreement on a specific definition, differences in the methods used to inventory remaining stands of old growth forest can produce major discrepancies. Or so complains the National Commission on Science for Sustainable Forestry (NCSSF) in its recent report, “Beyond Old Growth: Older Forests in a Changing World.”

In 1991, for example, the U.S. Forest Service and the nonprofit Wilderness Society each released its own inventory of old-growth forests in the Pacific Northwest and northern California. They both used the Forest Service’s definition based on the number, age and density of large trees per acre, the characteristics of the forest canopy, the number of dead standing trees and fallen logs and other criteria. However, because each agency used different remote sensing techniques to glean data, the Forest Service came up with 4.3 million acres of old-growth and the Wilderness Society found only two million acres.

The NCSSF also studied the data, and they concluded that 3.5 million acres (or six percent) of the region’s 56.8 million acres of forest qualified as old growth—that is, largely trees over 30 inches in diameter with complex forest canopies. By broadening the definition to include older forest with medium-diameter trees and both simple and complex canopies, NCSSF said their figure would go up substantially.

In other parts of the country, less than one percent of Northeast forest is old growth, though mature forests that will become old growth in a few decades are more abundant. The Southeast has even less acreage—a 1993 inventory found about 425 old growth sites across the region, equaling only a half a percent of total forest area. The Southwest has only a few scattered pockets of old-growth (mostly Ponderosa Pine), but for the most part is not known for its age-old trees. Old-growth is even scarcer in the Great Lakes.

It is hard to say whether the remaining pockets of scattered old-growth in areas besides the Pacific Northwest will remain protected, but environmentalists are working hard to save what they can in northern California, Oregon and Washington. The outgoing Bush administration recently announced plans to increase logging across Oregon’s remaining old-growth reserves by some 700 percent, in effect overturning the landmark Northwest Forest Plan of 1994 that set aside most of the region’s remaining old growth as habitat for the endangered spotted owl.

Protecting remaining old-growth is important for many reasons. “These areas provide some of the cleanest drinking water in the world, critical salmon and wildlife habitat, world-class recreational opportunities and critical carbon storage in our fight against global warming,” says Jonathan Jelen of the nonprofit Oregon Wild, adding that as much as 20 percent of the emissions related to global warming can be attributed to deforestation and poor forest management. “A growing body of evidence is showing the critical role that forests—and old-growth forests in particular—can play in mitigating climate change.”

CONTACTS: NCSSF, http://ncseonline.org/NCSSF/; Oregon Wild, www.oregonwild.org

GOT AN ENVIRONMENTAL QUESTION? Send it to: EarthTalk, c/o E/The Environmental Magazine, P.O. Box 5098, Westport, CT 06881; submit it at: www.emagazine.com/earthtalk/thisweek/, or e-mail: earthtalk@emagazine.com. Read past columns at: www.emagazine.com/earthtalk/archives.php
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