Is MCS a learned response? methodological weaknesses revealed

Discussion in 'Fibromyalgia Main Forum' started by tansy, Nov 27, 2008.

  1. tansy

    tansy New Member

    Is multiple chemical sensitivity a learned response? A critical evaluation of provocation studies

    Authors: Ellen Goudsmit; Sandra Howes

    DOI: 10.1080/13590840802443133

    Publication Frequency: 4 issues per year
    Published in: Journal of Nutritional & Environmental Medicine, Volume 17, Issue 3 2008 , pages 195 - 211

    First Published: 2008


    Background. A systematic review of provocation studies concluded that while persons with multiple chemical sensitivities (MCS) react to chemical challenges, these responses occur more often when they can discern differences between active and sham substances. The authors of the review interpreted these findings as evidence that the symptoms may not be specific to the chemical but related to expectations and prior beliefs. Given the complexity of the subject matter, the studies were re-examined using additional criteria.

    Results: Our analysis revealed a number of methodological weaknesses which do not appear to have been given due consideration by the authors when interpreting the findings.

    Conclusions. In light of these shortcomings, we believe that their conclusions may have over-stated the role of psychological factors in the aetiology of MCS.

    [This Message was Edited on 11/27/2008]