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Related Experiment Videos

Handedness and allergic response

S Coren1

  • 1Psychology Department, University of British Columbia, Vancouver, Canada.

The International Journal of Neuroscience
|June 1, 1994
PubMed
Summary
This summary is machine-generated.

Nonright-handed individuals, including left-handers, have a higher frequency of allergies like asthma and eczema. Consistent right-handedness is a more sensitive indicator for detecting allergies than simple left- or right-handedness.

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Area of Science:

  • Allergy and Immunology
  • Neuroscience
  • Human Genetics

Background:

  • Previous research suggests a correlation between non-right-handedness and allergic conditions such as hay fever, asthma, eczema, and urticaria.
  • Understanding this association may offer insights into immune system regulation and neurodevelopmental factors.

Purpose of the Study:

  • To investigate the relationship between handedness and allergic reactions to a wide range of common allergens.
  • To determine if different criteria for assessing handedness influence the observed association with allergies.

Main Methods:

  • A sample of 430 subjects was assessed for reactions to 20 common allergens.
  • Handedness was evaluated using stringent criteria (consistent right-handedness vs. non-right-handedness) and a simple left- vs. right-handed dichotomy.

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  • The presence and number of allergies were recorded for each subject.

    • Main Results:

    • Individuals who were left-handed or not consistently right-handed exhibited a higher frequency of allergic reactions.
    • The stringent criterion of consistent right-handedness versus non-right-handedness proved more sensitive in identifying allergic individuals.
    • The association between non-right-handedness and allergies was more pronounced in subjects with multiple allergic conditions.

    Conclusions:

    • Non-right-handedness is associated with an increased prevalence of allergies.
    • The definition of handedness criteria significantly impacts the detection of this association.
    • Further research may explore the underlying biological mechanisms linking handedness and immune system responses.