Incorporating short bursts of vigorous daily activity may significantly lower the risk of developing up to 13 different cancers, according to a July study published in BMC Medicine. The research suggests that even three minutes of intense movement, such as jogging or rushing upstairs, can make a substantial difference in overall well-being.
The study observed that for every 30 minutes of movement replaced by sitting, cancer risks increased by 8%. John J. Mitchell, the study's lead author and a senior research fellow at University College London’s Institute of Sport, Exercise & Health, emphasized that “every movement counts in the day.” He added that overall movement throughout a 24-hour period accumulates, with each behavior having a cumulative effect.
To assess the benefits of daily movement, researchers utilized smartwatches to track the activity levels of nearly 60,000 adult participants for a week. The devices measured movement speed and distinguished between sitting, reclining, and standing. Eight years later, the researchers analyzed participants' medical records to identify cases of 13 cancers linked to physical inactivity, including bladder, breast, bowel, kidney, and stomach cancers. Statistical models were then developed to determine how replacing sedentary time with increased daily movement could theoretically reduce these cancer risks.
The findings indicate that any form of movement, even standing, is more beneficial than remaining sedentary. However, more vigorous activities were found to be the most effective in lowering cancer risks. Mitchell noted that while replacing sitting with any movement or standing can contribute to risk reduction, incorporating a few minutes of more intensive activities appears to offer the most significant theoretical benefits.
This research builds upon existing studies that highlight the health advantages of daily walks and short periods of moderate activity. Alan Hedge, an ergonomics expert and professor emeritus at Cornell University, who was not involved in the study, stated that human physiology is designed for intermittent movement and varied postures throughout the day. He commented that this new research further strengthens the arguments against sedentary lifestyles and the negative health impacts of excessive sitting.
Mitchell suggested that moderate to vigorous physical activities may lower cancer risk by triggering positive physiological responses, such as reduced inflammation, decreased diabetes risk, and improved cardiovascular function. The study emphasizes that achieving these benefits does not require formal gym workouts. Everyday activities that increase physical exertion, like rushing to catch a bus, climbing stairs, or playing with children, can be equally important for risk reduction.