EDF Health

A new power couple: The combined impact of the microbiome and chemical exposures on disease susceptibility (Part 1 of 2)

By Allison Tracy / Published: December 15, 2011

Allison Tracy is a Chemicals Policy Fellow.  EDF Health Scientist Dr. Jennifer McPartland and Senior Scientist Dr. Richard Denison contributed to this post.

When you’re standing at the kitchen counter this holiday season wrestling with the nebulous world of weight gain, think about synthetic chemicals.  A good number of them are in you.  And studies show that some of them are pretty busy in there, interacting with various biological systems – including your metabolism.

But they’re not the only show in town.  Microbes are busy in your gut doing important things like digesting food and degrading harmful compounds.  But could they also influence the size of your love handles?  New science suggests that these microbes—in concert with certain chemicals—may have just this effect.

It is becoming increasingly clear that it’s not just your genes and your self control that determine your risk for obesity and related complications like diabetes.  Environmental factors are a big part of the equation, and those factors just might extend to synthetic chemicals to which you’re exposed, such as the flame retardants in your furniture and the plasticizers in food can linings.  Read More »

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What are you, really? How our microbiome mediates chemical exposures

By Allison Tracy / Published: July 5, 2011

Allison Tracy is a Chemicals Policy Fellow. Richard Denison, Ph.D., is a Senior Scientist.

For millennia people have contemplated the question “who am I?”  But how about the even more fundamental question, “what am I”?  The human body is made up of about 10 trillion cells that form our tissues and organs.  But did you know that the human gut is the home to microbes that comprise 10 times more – that is, 100 trillion – cells?  And that, while the human genome contains about 23,000 genes, there are some 3 million genes in the microbes living in the human gut?  Obviously, this complicates things.  It arguably means we could be considered to be more microbe than human!

These numbers should tip us off to the importance of what is known as our “microbiome.”  New science is shedding light on the central function of the microbiome as a mediator between external agents to which we’re exposed and the impacts of those exposures.  Recent studies show, for example, that as chemicals pass through the gastrointestinal tract, they undergo major changes in bioavailability (i.e., how easily they are taken up into our bodies) and in their toxicity.  Recognition of the role of the microbiome is shifting the playing field for toxicology in fundamental ways.   Read More »

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More progress under REACH: 13 more chemicals en route to the Authorization list

By Allison Tracy / Published: June 20, 2011

Allison Tracy is a Chemicals Policy Fellow.

The European Chemicals Agency (ECHA), the agency responsible for implementation of the EU’s REACH Regulation, posted a press release last week listing 13 chemicals it proposes to advance from its list of “Substances of Very High Concern” (SVHCs), also known as the Candidate List for Authorization, to its list of chemicals subject to Authorization, also known as Annex XIV.

Authorization is one of the main pillars of REACH, via which use of designated SVHCs is limited to those uses specifically authorized by EU authorities. Following the public consultation period that is now underway, some or all of the 13 chemicals will move to the Authorization list.   Read More »

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ECHA adds seven more Substances of Very High Concern to REACH Candidate List

By Allison Tracy / Published: June 2, 2011

Allison Tracy is a Chemicals Policy Fellow. Richard Denison, Ph.D., is a Senior Scientist.

The European Chemicals Agency (ECHA) issued a press release on Tuesday announcing the addition of seven chemicals to the Candidate List of Substances of Very High Concern (SVHC) under the European Union’s REACH Regulation.  [Update 6/20/11:  The formal addition of these substances to the candidate list, the initial announcement of which this post addressed, happened today.  See ECHA’s press release, which also contains some additional information about the uses of these chemicals.  The full candidate list including these seven substances is available here.]

All of the chemicals are officially classified as Carcinogenic, Mutagenic or Reproductive toxicants (CMRs).  Their addition brings the total number of chemicals on the Candidate List to 53.  Adding a chemical to REACH’s Candidate List is the first step toward subjecting it to REACH’s Authorization process, whereby the chemical can be used only if specifically authorized by EU authorities.

In this brief post we present a bit more information on these latest seven SVHCs, including the extent of their presence in U.S. commerce and their main uses.  Read More »

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Ripples of REACH: Chemicals policy changes in Japan, Turkey and South Korea

By Allison Tracy / Published: April 5, 2011

Allison Tracy is a Chemicals Policy Fellow. Richard Denison, Ph.D., is a Senior Scientist.

The November 31st deadline for the first batch of registrations under REACH (the European Union’s Regulation for Registration, Evaluation, Authorization and Restriction of Chemicals) may have passed, but life is far from dull on the international scene of chemicals policy.  As discussed in a previous post, chemicals policy enhancements are ramping up across the globe, many of them mirroring the innovations introduced under REACH.

In this post, we’ll discuss significant advances in Japan, Turkey and South Korea that drive home the message that the ripples from REACH are ever-widening.  Read More »

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One solid step for REACH, one giant leap for chemicals policy

By Allison Tracy / Published: March 21, 2011

Allison Tracy is a Chemicals Policy Fellow. Richard Denison, Ph.D., is a Senior Scientist.

While efforts to improve U.S. chemical safety legislation have been at, shall we say, a stand-still for the past few months, our European counterparts have been buzzing with activity.  U.S. NGOs, industry, regulators and lawmakers should be paying really close attention to all that buzz as they deliberate the shape of U.S. chemicals policy in the new Congress.

The European Chemicals Agency (ECHA) is currently in the thick of processing registrations received by the first major deadline under REACH, the European Union’s chemicals regulation for the Registration, Evaluation, Authorization and Restriction of Chemicals.  November 30, 2010 was the first of three deadlines for registering existing chemicals (termed “phase-in substances” under REACH); it applied to the highest-volume and most hazardous chemicals on the market.  Some 4,700 new and existing chemicals have now been registered under REACH since it took effect in mid-2008, including about 3,500 existing chemicals subject to that first deadline based on high volume or toxicity.

In contrast to Las Vegas, what is happening in Europe is not staying in Europe.  That alone makes it worth paying attention to.  Read More »

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