Neuropsychologia
Psychobiologie des comportements adaptatifs, INSERM Unité 259, Bordeaux, France.
Published: April 1990
There are conflicting reports in the literature about the possible association between left-handedness and immune disorders, including autoimmune diseases as well as allergies. In this study we compared the distribution of right- and left-handers, assessed with the Edinburgh Handedness Inventory, in a group of patients consulting an allergy clinic and a control population with a similar sex and age distribution. There was no overall association between left-handedness and allergies, although we found a tendency towards left-handedness in patients whose allergic symptoms started before puberty, suggesting that left-handers may have an increased predisposition to allergic disease that manifests itself during early life.
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http://dx.doi.org/10.1016/0028-3932(90)90104-v | DOI Listing |
Ther Adv Med Oncol
December 2024
Department of Anatomy and Department of Biomedical Informatics, Pusan National University, 49 Busandaehak-ro, Yangsan 50612, Republic of Korea.
Background: Given the widespread prevalence of breast cancer as a global malignancy, there is a compelling need to delve into its risk determinants.
Objective: This study aims to investigate the potential relationship between indicators of left-handedness and breast cancer, employing systematic review, meta-analysis, and Mendelian randomization methods.
Design: Systematic review and meta-analysis.
Arch Sex Behav
November 2024
Institute of Psychology, Jagiellonian University, Kraków, Poland.
Biological mechanisms proposed to play a role in the development of sexual orientation in men include hormonal, genetic, and immunological factors. The posited roles of these factors are not mutually exclusive; instead, they may be at play to different degrees in different individuals. Direct measurement of these influences is challenging; thus, researchers rely on putative markers.
View Article and Find Full Text PDFCommun Biol
September 2024
Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands.
Language is supported by a distributed network of brain regions with a particular contribution from the left hemisphere. A multi-level understanding of this network requires studying its genetic architecture. We used resting-state imaging data from 29,681 participants (UK Biobank) to measure connectivity between 18 left-hemisphere regions involved in multimodal sentence-level processing, as well as their right-hemisphere homotopes, and interhemispheric connections.
View Article and Find Full Text PDFEvol Hum Sci
August 2024
School of Biology, University of St Andrews, Dyers Brae, St Andrews KY16 9TH, UK.
The frequency of left-handedness in humans is ~10% worldwide and slightly higher in males than females. Twin and family studies estimate the heritability of human handedness at around 25%. The low but substantial frequency of left-handedness has been suggested to imply negative frequency-dependent selection, e.
View Article and Find Full Text PDFPsychophysiology
December 2024
Laboratoire de Psychologie des Cognitions, Department and faculty of Psychology, University of Strasbourg, Strasbourg, France.
Several neurodevelopmental disorders are associated with a higher prevalence of atypical laterality (e.g., left-handedness).
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