Celebrity doctor Sanjay Gupta writes a remarkably candid report on the profusion of chemicals in our lives and why we should be concerned about them, for CNN:
This morning, I will be testifying before the U.S. Senate Committee on Environment & Public Works. When I received the call to do this, truthfully, I was a little nervous. The topic is “Risks of toxic chemicals to children’s health,” something I have been interested in for a long time, and moreso after having three kids of my own. In fact, for the last year, I investigated the interplay between toxic chemicals and human health for a pair of documentaries on CNN.
I learned more than a series of text books could’ve taught me. I spent time with citizens in Mossville, Louisiana, arguably one of the most toxic cities in America. For countless hours, I spoke to government officials and private sector expert scientists both on and off camera. And, I looked carefully at the research about the toxics we live with everyday. The most eye-opening part was how much we don’t know.
While I am not a toxicologist or chemist by training, as a neurosurgeon, I have spent most of my life learning and trying to perfect the scientific method. Here is what I can tell you: In science, we expect absolute proof. What’s the old adage? In God we trust; everyone else bring data. But, the reality is, we don’t always have that proof. And, it is the area of potential impact of toxics on human health where the conventional scientific method is thoroughly challenged.
As things stand now: Out of the roughly 80,000 chemicals in commerce, only around 200 have been tested, and only five have been restricted. I guess I always assumed watchdog groups and the government had evaluated and signed off on the safety of the chemicals we encounter in our lives. It’s not to say that all chemicals are bad. Again, it is how much we don’t know.
Make no mistake, learning things too late can be wildly dangerous. In the 1940s, the pesticide DDT was declared harmless to humans and animals. Advertisements showed housewives cheerfully spraying it all around the house, on the couches, even spraying the dog. Today, DDT is banned in this country. We sometimes find out chemicals we thought were harmless are not safe at all.
Lead is another example. Over the last 50 years, the acceptable levels of lead in the human body have been lowered every decade. Now, we know no amount of lead is safe. So many adults exposed to lead as children who suffered a whole range of damage to the brain and nervous system wish they would’ve known then’ what they know now.
Experts all over the country told me a similar thing. In the United States, chemicals are innocent until proven guilty. And, the only way they are proven guilty is by health effects turning up in people who have been exposed, often years later. In some ways, that makes us all guinea pigs…
[continues at CNN]
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