Most of us have been told that exercise is good for us. For anyone who has been through a cancer diagnosis, the question is sharper. Does moving really change what happens next?
A new analysis in the British Journal of Sports Medicine pulled together 21 randomized trials with 8,449 cancer patients. People put into structured exercise programs were about 23 percent less likely to die than those who did not.
They were also 17 percent less likely to see their cancer come back. Death from cancer specifically dropped by 26 percent in the exercising groups.
Who the study looked at
The patients averaged 54 years old, and 88 percent of them were women. Most had breast cancer. The rest mainly had bowel or pancreas cancers.
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They were followed for an average of about five years. The trials came from North America, Europe, Australia, and Asia.
Which type of exercise worked
Aerobic exercise on its own, like brisk walking or cycling, showed the strongest link to survival. Combining aerobic work with strength training also helped.
Strength training by itself showed no clear benefit, but that finding rested on a single small trial of 129 people.
The authors wrote that aerobic exercise reshapes how the heart and blood vessels work, moves immune cells around the body, and changes how blood flows through tumors. These are the same systems cancer treatments act on.
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Where the benefits were clearest
Benefits were strongest in people with early-stage disease. The reviewers found less evidence on advanced-stage cancer.
They also cautioned that some non-exercise groups adopted healthier habits on their own during the trials, which can blur the comparison.
What the researchers now recommend
The authors wrote that doctors can now reasonably recommend structured exercise as part of standard cancer care, while noting that important questions remain.
Outside experts told Medical News Today that regular physical activity acts across many organ systems at once.
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Diana Garrett, a physical therapist at Providence Saint John's Health Center in Santa Monica, California, said regular exercise can boost immune activity. That may matter especially for people with a history of cancer.
The effect was strongest in patients who completed at least 70 percent of the exercise program assigned to them.
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This article is made and published by Jesper Bengtson, who may have used AI in the preparation.