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Br J Cancer. 2007 Sep 3;97(5):686-7. Epub 2007 Aug 7.

Left-handedness and risk of breast cancer.

Author information

  • 1Western Australian Institute for Medical Research, Nedlands, Perth, Western Australia 6009, Australia. fritschi@waimr.uwa.edu.au

Abstract

Left-handedness may be an indicator of intrauterine exposure to oestrogens, which may increase the risk of breast cancer. Women (n=1786) from a 1981 health survey in Busselton were followed up using death and cancer registries. Left-handers had higher risk of breast cancer than right-handers and the effect was greater for post-menopausal breast cancer (hazard ratio=2.59, 95% confidence interval 1.11-6.03).

PMID:
17687338
[PubMed - indexed for MEDLINE]
PMCID:
PMC2360366
Free PMC Article
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