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A positive attitude does not improve the chances of surviving cancer and doctors who encourage patients to keep up hope may be burdening them, according to new research.
Optimism made no difference in the fate of most of the 179 cancer patients that researchers followed over five years in Australia.
Only eight people were still living by the time the study ended in 2001.
All the patients studied were suffering from a common form of lung cancer. Although the study was small and dealt with a kind of cancer that offers little chance for survival (about 12% of patients live beyond five years), health experts say it is the first scientifically valid look at optimism and cancer.
The results surprised researchers, who expected optimistic patients to live longer than their counterparts.
But patients are burdened by trying to maintain a positive outlook during their difficult situations, said researchers from the Peter MacCallum Cancer Centre in Melbourne, Australia, and five other health centres in an article published today in the journal Cancer.