The persistent fatigue that plagues one out of every three breast cancer survivors may be caused by one part of the autonomic nervous system running in overdrive, while the other part fails to slow it down. That imbalance of a natural system in the body appears linked to the tiredness and exhaustion that can burden cancer patients as much as a decade after their successful treatment. The effect is so great, researchers indicate, that it may be a sign of accelerated aging in fatigued patients, causing them to seem as much as 20 years older compared with patients who are not fatigued, note researchers from Ohio State University, Columbus.
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