Can healthcare do better for people with multiple chemical sensitivities?

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  1. Arthur Leznoff MD. FRCP(C)

    The existing “Taskforce ” on MCS, fibromyalgia and chronic fatigue is flawed. The Canadian society of allergy &clinical Immunology has sent letters about this “taskforce” If a new panel will be considering MCS, I am willing to serve on the panel.I am considered (by orthodox,evidence based medicine) to be expert in “MCS”
    Arthur Leznoff MD, FRCP(C)

  2. Varda Burstyn

    I really welcome this article, and its encouragement of healthy debate on the broad but incredibly neglected issue of MCS. Many thanks to the authors.

    Unfortunately, the historic failure of allergy and immunology to understand and develop treatment modalities to assist patients with MCS has been a big part of the problem, especially here in Canada. Dr. Leznoff’s reference to ‘orthodox, evidence based medicine’ may have right with respect to ‘orthodoxy’ but not to ‘evidence based.’ That discussion will need a longer space than is available here.

    In the United States, a significant number of allergists have added more effective approaches to their practices by becoming expert in the field of environmental medicine, about which more can be learned from the American Academy of Environmental Medicine Denial of real disorders and refusal to expand knowledge has left hundreds of thousands of Canadians and their families without help.

    To see the types of diagnostic and treatment modalities that are available south of the border, and that should be made available here, visit a clinic that has helped 40,000 patients over many years (including me, 9/11 first responders, Exxon Valdes and Deepwater Horizon victims and many others):

    The same attitude of denial also sustains the general use (and the non-regulation) of many toxic ‘everyday chemicals’ that are harming everyone’s health in serious ways over time. There is a huge literature on this subject by now, but those not yet familiar with this reality can certainly get a good start by visiting

    We need to develop strong public health standards for chemicals in daily use – from building materials to baby toys, from furniture to cosmetics – that protect everyone’s health. This will create a much safer environment for those with MCS too, reducing their disability by improving air quality and creating safe spaces for all. And we need to modernize the practice of medicine here, not retrench and look backwards.

    As far as CBT is concerned, MCS refers to symptoms – but not to cause or severity. In case of low toxicity, absence of pernicious infections and other biophysicial problems, some form of ‘amygdala retraining’ may be helpful. And it should be provided where it can help. But it cannot – and does not – resolve MCS when other important biophysical factors are part of the clinical picture. So it cannot responsibly be advanced as a cure for all, or even most, people with MCS.

  3. Varda Burstyn

    Just clicking on the links here and noticed that the research cited is out of date, unrepresentative and limited. Instead, check out

    Chronic, Complex Conditions: Academic and Clinical Perspectives, John Molot, MD, FRCFP, 2013. This document presents current thinking by physicians and researchers, and recommendations for clinical services.


  4. Tina

    All I can say is that I have FM and MCS and a handful of autoimmune syndromes. When you are disabled by a migraine like headache and can’t function with vomiting all you can do is curl up in a ball waiting in the ER for half a day for treatment, I know it isn’t in my head or can be cured with therapy. I work hard and succeed in spite of my disability and because it is invisible suffer stigma from others that think it is in my head or I am a malingerer. If either of those were true I wouldn’t have put myself through university 3 times.


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