Sitting Over 30 Minutes Increases Cancer Death Risk, Study Finds

A new longitudinal study of more than 90,000 adults tracked over ten years has found that sitting or lying down while awake for periods longer than 30 minutes each day is linked to a higher risk of death from cancer. The researchers observed that each additional hour of uninterrupted inactivity corresponded with a measurable increase in cancer‑related mortality, suggesting that even modest extensions of sedentary time can have serious health consequences.

The analysis also indicated that incorporating light physical tasks—such as ironing, standing while cooking, or brief walks—may offset some of the risk associated with prolonged sitting. While the study does not establish a causal relationship, it underscores the potential benefits of breaking up sedentary periods with low‑intensity activity. Health officials are advised to consider these findings when updating guidelines aimed at reducing the adverse effects of sedentary behaviour.