Prolonged Sitting Linked to Increased Cancer Risk, Experts Advise Regular Movement

A recent study published in the medical journal PLOS Medicine highlights the health risks associated with prolonged uninterrupted sitting, particularly an increased risk of cancer incidence and mortality. The research, which followed over 90,000 participants for more than 12 years, found that longer continuous sitting periods correlated with higher cancer mortality rates. Conversely, individuals who regularly interrupted their sitting with standing, short walks, or light activity showed lower risks.

The study explains that extended sitting reduces muscle activity, slows blood flow, decreases energy expenditure, and disrupts the regulation of blood sugar and fats. It may also affect inflammatory processes and metabolic functions, all of which can contribute to disease development over time. However, the research is observational and does not establish a direct cause-and-effect relationship between sitting and cancer.

Dr. Valeria Smanisty, a senior oncologist at Maccabi Healthcare and director of oncology institutes in northern Israel, emphasizes that even small changes can improve health outcomes. She recommends standing up at least every 30 minutes for a few minutes, walking during phone calls, using reminders to move, choosing stairs over elevators, parking farther away, and taking short movement breaks during computer work.

Importantly, regular exercise alone does not fully counteract the negative effects of prolonged sitting. Combining consistent physical activity with frequent movement breaks throughout the day is the best strategy to reduce health risks associated with sedentary behavior.

This advice comes amid growing awareness of the modern lifestyle’s impact on health, as many people spend most of their workdays sitting at computers or watching television. Incorporating simple habits to break up sitting time can significantly contribute to cancer prevention and overall well-being.