A major clinical trial funded by the Canadian Cancer Society (CCS) has revealed that structured physical activity can significantly improve survival outcomes for people with colon cancer—marking a pivotal shift in how exercise may be integrated into cancer treatment.

Presented at the American Society of Clinical Oncology’s annual conference and published in the New England Journal of Medicine, the 17-year international study followed 889 individuals post-surgery and chemotherapy. Participants who followed a structured exercise program—adding 2.5 hours of moderate activity per week—saw a 28% reduction in cancer recurrence and a 37% decrease in overall mortality.

“This is the first clinical trial in the world designed to answer whether exercise can improve cancer survival, and the results are clear,” said Dr. Chris Booth, study co-chair and medical oncologist at Kingston Health Sciences Centre.

Dr. Kerry Courneya, study co-chair and professor at the University of Alberta, emphasized that exercise should no longer be viewed as an optional quality-of-life measure but rather a critical component of cancer care: “It is a treatment for colon cancer that must be made available to all patients.”

For Canada’s fitness professionals and gym operators, the findings underscore a growing opportunity to support clinical outcomes through accessible, tailored movement programs—especially for populations recovering from or living with chronic disease. The trial’s results may soon influence clinical guidelines and open doors for new partnerships between healthcare providers and the fitness industry.

A full health economic analysis is underway, with early indications that the program will be highly cost-effective compared to traditional drug therapies.

As fitness becomes increasingly central to public health, this landmark study reinforces the life-saving role the fitness industry can play in supporting structured, inclusive activity for all Canadians.