The definition of toxin can be somewhat surprising if you have - TopicsExpress



          

The definition of toxin can be somewhat surprising if you have grown accustomed to hearing the word in the context of flame retardants and parabens. Though toxin is now often used to refer to man-made chemicals, the most precise meaning of the term is still reserved for biologically produced poisons. The pertussis toxin, for example, is responsible for damage to the lungs that can cause whooping cough to linger for months after the bacteria that produce it have been killed by antibiotics. The diphtheria toxin is a poison potent enough to cause massive organ failure, and tetanus produces a deadly neurotoxin. Vaccination now protects us against all these toxins. I remember feeling agony when my son drank water for the first time. Unclean! Unclean! my mind screamed. Toxoid is the term for a toxin that has been rendered no longer toxic, but the existence of a class of vaccines called toxoids probably does not help quell widespread concerns that vaccination is a source of toxicity. The consumer advocate Barbara Loe Fisher routinely supports these fears, referring to vaccines as “biologicals of unknown toxicity” and calling for nontoxic preservatives and more studies on the “toxicity of all other vaccine additives” and their potential “cumulative toxic effects.” The toxicity she speaks of is elusive, shirting from the biological components of the vaccines to their preservatives, then to an issue of accumulation that implicates not just vaccines, but also toxicity from the environment at large. In this context, fear of toxicity strikes me as an old anxiety with a new name. Where the word filth once suggested, with its moralist air, the evils of the flesh, the word toxic now condemns the chemical evils of our industrial world. This is not to say that concerns over environmental pollution are not justified—like filth theory, toxicity theory is anchored in legitimate dangers—but that the way we think about toxicity bears some resemblance to the way we once thought about filth. Both theories allow their subscribers to maintain a sense of control over their own health by pursuing personal purity. For the filth theorist, this means a retreat into the home, where heavy curtains and shutters might seal out the smell of the poor and their problems. Our version of this shuttering is now achieved through the purchase of purified water, air purifiers, and food produced with the promise of purity. ~D.
Posted on: Sat, 04 Oct 2014 03:02:28 +0000

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