Prolonged Sitting Linked to Higher Risk of Dying From Cancer
Researchers found each extra hour of prolonged sitting raised cancer death risk 9%, while replacing it with light activity lowered risk 12%.
- A new Glasgow University study of more than 91,000 British participants found that each additional hour of prolonged, uninterrupted sedentary behavior is associated with a 9% higher risk of dying from cancer.
- Researchers defined prolonged sedentary behavior as bouts lasting at least 30 minutes with at least 90% of time sedentary, while interrupted sedentary behavior showed an opposite pattern associated with lower risk.
- Replacing one hour per day of prolonged sedentary behavior with light physical activity was associated with a 12% lower risk of cancer death, according to the study published in PLOS Medicine.
- Study co-author Frederick Ho, of the University of Glasgow's School of Health & Wellbeing, said experimental studies show breaking up sitting can improve metabolic responses compared with uninterrupted sitting.
- Moving forward, clinical trials will help researchers develop personalized strategies for breaking up sitting time, as current health guidelines focus heavily on moderate or vigorous exercise rather than light movement.
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Why Long, Uninterrupted Sitting May Matter for Cancer Prevention
Public health advice has long emphasized exercise: move more, meet weekly activity targets, reduce time spent sitting. But a growing body of evidence suggests that the pattern of inactivity may also matter. Sitting for long, uninterrupted periods may not carry the same health implications as the same amount of sedentary time broken up by movement. A new study published in PLOS Medicine adds cancer outcomes to that discussion. Researchers analyze…
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Frequent and long sitting phases can increase the risk of cancer. The good news: Even small seat interruptions have a protective effect.
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