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Is left-handedness a sensitive marker of prenatal exposures or indicators of fetal growth?

Jørn Olsen, From the Steno Institute of Public Health, Dept. of Epidemiology and Social Medicine, University of Aarhus, Aarhus, Denmark, Correspondence Address: Jorn Olsen, professor, M.D., Ph.D. The Steno Institute of Public Health Dept. of Epidemiology and Social Medicine University of Aarhus Bldg. 2C, Nørrebrogade 44 DK-8000 Aarhus C

Left-handedness has been suggested as a sensitive marker of neurotoxic exposures or of the hormonal environment in fetal life.

The prevalence of left-handedness was the subject of a follow-up study in children aged 5 to 9 years and correlated to exposures recorded by their mothers during pregnancy. Altogether 965 children were studied by means of questionnaires completed by the mothers. The response rate was 91%. Smoking, head circumference, Apgar score and indicators of fetal growth retardation were found not to be associated with increased prevalence of left-handedness.

Key Words: pregnancy • left-handedness.

Scandinavian Journal of Public Health, Vol. 23, No. 4, 233-235 (1995)
DOI: 10.1177/140349489502300403


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