This study shows that watching television accelerates aging

Watching television could speed up the aging process, according to a new study. This discovery might change how we approach sedentary behavior and healthy aging.


Dr. Molin Wang of the TH Chan School of Public Health at Harvard, the lead author of the study, highlights the importance of replacing sedentary time with even light physical activity. This also includes adequate sleep for those who lack it. Such an approach could be crucial for optimal aging.

Dr. Andrew Freeman of National Jewish Health in Denver supports these findings, noting that sedentary behavior has always had negative health consequences. Although he was not involved in this study, he confirms that numerous other studies support this perspective.

The study in question, published in JAMA Network Open, followed more than 45,000 people aged 50 and older over 20 years. These individuals, initially free from chronic diseases, had their lifestyles analyzed in detail, including their time spent sitting and their physical activities.

Researchers defined healthy aging as living to the age of 70 without major chronic diseases while maintaining good mental and physical health. It appears that every two hours spent watching television reduces the chances of healthy aging by 12%, while two hours of light activity increase these chances by 6%.

Dr. Andrew Freeman explains that sedentary behavior often leads to unhealthy habits such as junk food consumption and disrupted sleep, which are aggravating factors for cardiovascular health and blood pressure. Replacing this time with physical activity can therefore have significant beneficial effects.

To combat sedentary behavior, active individuals are advised to stand up regularly when working at a desk, use a standing desk or even a treadmill desk if possible. Physically attending meetings and avoiding sitting for more than 30 minutes at a time are also recommended strategies.

Combining television viewing with physical activities or healthy snacks, and using apps to track activity and screen time, are other tips to improve overall health and increase the chances of aging well.