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Posted 7 months ago
(October 11, 2012)
“Women who reported on average before diagnosis fewer hours of sleep per night had a higher likelihood of recurrence, so therefore a more aggressive breast tumor.”
These more dangerous tumors were more common among women who reported 6 hours or less of sleep per night.
Thompson says more data are needed to discover what accounts for the association, but she says 7 to 8 hours of sleep should still be a good thing.
The study in the journal Breast Cancer Research and Treatment was supported by the National Institutes of Health.