Exercise and Mortality Risk in Childhood Cancer Survivors
Study Overview
Researchers from the United States and Canada have investigated the link between increased physical activity and mortality risk among survivors of childhood cancer. Each week, over 3,000 Canadians receive a cancer diagnosis, and individuals battling cancer have a significantly higher risk of mortality, with their life expectancy averaging ten years shorter than that of the general population.
Changing Factors in Mortality
As time progresses, cancer itself or its progression becomes less of a mortality factor. Instead, treatment-related effects, such as the emergence of new cancerous growths and heart disease, may lead to higher mortality rates than cancer itself.
The Importance of a Healthy Lifestyle
Adopting a healthy lifestyle is crucial for reducing mortality from heart disease and other causes. Key components of a healthy lifestyle include nutritious eating, weight management, regular exercise, and effective stress control. For instance, engaging in regular physical activity may not only decrease the initial risk of cancer but also lower the likelihood of cancer recurrence. However, the impact of exercise on adult survivors of childhood cancer remains unclear.
Research Methodology
To address this gap, a research team conducted a multi-center cohort study involving 15,450 cancer survivors who were diagnosed before the age of 21. These individuals were recruited from pediatric hospitals across the United States and Canada between 1970 and 1999 and participated in the Childhood Cancer Survivor Study, which included follow-ups until December 31, 2013. The results of this study were published in JAMA Oncology.
Key Findings
The researchers utilized a questionnaire to assess physical activity levels over an eight-year period, revealing that increased exercise was associated with a 40% reduction in all-cause mortality among childhood cancer survivors compared to those who maintained low levels of exercise. These findings are significant given the rapidly expanding population of adult cancer survivors from childhood who are at a heightened risk of mortality.
Conclusion
This research underscores the importance of physical activity in improving survival outcomes for childhood cancer survivors, highlighting a critical area for focus in post-cancer care and lifestyle management.
Reference
Scott JM, Li N, Liu Q, Yasui Y, Leisenring W, Nathan PC, Gibson T, Armenian SH, Nilsen TS, Oeffinger KC, Ness KK, Adams SC, Robison LL, Armstrong GT, and Jones LW. “Association of Exercise With Mortality in Adult Survivors of Childhood Cancer.” JAMA Oncol. (2018).