1.  a.  On the leading British Cancer Charity website, Macmillan Cancer Support, they state that "there's   some evidence to show that being active at the recommended levels and maintaining a healthy weight can reduce the risk of some cancers progressing or coming  back".

     b.  A leading British cancer charity sponsored a study called, Move More, which compiled the findings of sixty studies that measured the effects of exercise on cancer patients. In this study they found that "some patients should view light exercise almost as a form of treatment itself, the report noted that two and a half hours of exercise a week could lower a breast cancer patient's risk of dying or cancer recurrence by 40 percent".

2.  a..The associate director for applied research at the National Cancer Institute, Dr. Rachel Ballard-Barbash, in a recent study which concluded that regular physical activity "decreases the risk of cancer-related mortality and of all cause mortaliy. This research is also supported by the Nurses Health Society that found that "women who walked briskly at least 3-5 hours per week were 50  percent lower risk of death from the disease".

b. When speaking about research that has been concerning how phyiscal activity effected those diagnosed with cancer, Dr. Ballard-Barbash, associate director for applied research at the National Cancer Institute, suggested that the majority of research had to do with woman breast cancer survivors because "there's a lot of research money in that feild" which means that there has been more focus on that area of research. Though, there a very large study in the Netherlands was done recently that involved colorectal cancer survivors. In that study, Laurien M. Buffart, a professor at the VU University Medical Center in Amsterdam, reported that "fatigue and the fear of tiredness may be a barrier to physical activity for some people". Yet on the other hand, "exercise energizes people who are undergoing or have completed cancer treatment".