Physical activity breaks linked to lower cancer mortality risk

New research published in BMC Medicine and PLOS Medicine suggests that brief periods of physical activity can significantly reduce the risk of cancer mortality. Studies involving tens of thousands of participants indicate that interrupting prolonged sedentary behavior—defined as sitting or reclining for 30 minutes or more—can lower the risk of up to 13 types of cancer, including breast, lung, and colorectal cancers.

One study led by researchers at University College London and another from the University of Glasgow tracked participants over several years using movement-tracking devices. Findings showed that every additional hour of prolonged sitting per day was associated with a 10 percent increase in the risk of cancer death.

Researchers noted that even ‘elementary’ movements, such as climbing stairs for three minutes or standing up from a desk every half hour, can provide protective benefits. While the studies are observational and cannot definitively prove causality, they highlight the importance of replacing sedentary time with light or vigorous activity to improve metabolic health and reduce cancer risks.