16 April 2009

Sleep may cause cancer issues

Researchers have found that sleep seems to cause pain and depression in people with cancer, rather than be an effect of them.


The pain and depression reported by people with cancer has often led to trouble sleeping - or so people believed. But researchers have found that, in fact, sleep seems to cause those problems rather than be an effect of them.

Their study suggests that interventions such as cognitive behavioural therapy aimed at eliminating the sleep issues could improve and decrease the pain and fatigue felt by people with cancer.

The researchers found that more than a quarter of the 11 445 people receiving cancer treatment at a Memphis clinic had severe to moderate trouble sleeping.

Not a consequence of pain
"We believed we would find a bi-directional relationship between insomnia and pain, but instead found that trouble sleeping was more likely a cause, rather than a consequence, of pain in patients with cancer," the study's lead author, Edward J. Stepanski, chief operational officer at the Accelerated Community Oncology Research Network in Memphis, US, said in a news release from the Journal of Clinical Sleep Medicine. The study is in the journal's April 15 issue.

The study also noted that younger people with cancer, and those whose cancer treatment started more recently, had greater problems with sleep than others did. The authors noted that more aggressive chemotherapy is given to younger patients, possibly causing toxicity issues. - (HealthDay News, April 2009)

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