Women's Health Weekly
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American Academy of Sleep Medicine
Insomnia in women with breast cancer linked to heart rate dysregulation
October 30th, 2008
A study in the October 15 issue of the Journal of Clinical Sleep Medicine shows that respiratory sinus arrhythmia (RSA) is a significant predictor of insomnia in women with breast cancer and confirmed that longer nocturnal wake episodes were associated with a flatter diurnal cortisol slope. Results of this study confirmed a relationship between frequent awakenings and abnormal cortisol (a steroid hormone that regulates blood pressure), rhythms in metastatic breast cancer, thus concluding that a disrupted cortisol rhythm may have serious medical implications in women with breast cancer. With the addition of demographics, disease severity and...
Source: Women's Health Weekly (2008-10-30)
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