Women who suffer with migraines are 26 per cent less likely to develop breast cancer, researchers have found.
"A study of 4,500 women found the link remained significant even when factors that are known to trigger migraines and are linked to breast cancer, such as alcohol and hormone replacement therapy, were taken into account.
The findings are intriguing but it is still not clear why and researchers have suggested it may be due to differences in a woman's hormones.
The research was conducted by the Fred Hutchinson Cancer Research Centre in Seattle and is published in the journal Cancer Epidemiology, Biomarkers and Prevention.
Significantly the protective effect of migraines was true for women who have been through the menopause and those who had not.
Dr Christopher Li, a breast-cancer epidemiologist said: 'We were able to look at whether this association was seen among both pre-menopausal and post menopausal women."
"We know that migraine is definitely related to hormones and that's why we started looking at this in the first place.
"We have different ideas about what may be going on but it's unclear exactly what the biological mechanisms are."
Read More:Migraines reduce breast cancer risk in women - Telegraph:
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