I thought this article from December 28, 2005, http://news.yahoo.com/s/nm/20051228/hl_ ... al_dcwould be of interest. Excerpts:
People who are obese around the middle and are physically inactive have poor odds of survival after a diagnosis of colorectal cancer, according to a new report. ... Patients who reported regular exercise before their colorectal cancer was found were 31 percent less likely to die from the cancer than were non-exercisers, the investigators report in the medical journal Gut. In fact, 73 percent of exercisers survived at least five years, compared with 61 percent of non-exercisers. ... we cannot say that increasing physical activity or losing weight post diagnosis is of any proven benefit at this stage