Sedentary behavior linked to higher cancer death risk, study finds

Key Points:

• A University of Glasgow study found that regularly interrupting prolonged sitting with physical activity is linked to a lower risk of cancer death, based on data from over 91,000 UK volunteers tracked for about 12 years.
• Prolonged sedentary behavior, defined as sitting for at least 30 minutes with 90% inactivity, was associated with a 10% higher risk of cancer death per additional hour daily, while replacing sitting with light, moderate, or vigorous activity lowered the risk by up to 22%.
• The study is observational and cannot prove causality, with limitations including a short monitoring period and lack of context for sedentary behavior, but it supports public health advice to break up sitting time with movement.
• Experts highlight that not just the total sitting time, but the pattern of sitting and movement throughout the day, impacts cancer mortality risk, and recommend simple strategies like standing and walking every 30 to 60 minutes to improve health outcomes.
• Sedentary behavior has also been linked to other health issues such as obesity, diabetes, and cardiovascular disease, reinforcing the importance of incorporating regular physical activity into daily routines.