Children and young adults who spend excessive hours on electronic devices or watching TV may face higher risks of developing cardiometabolic diseases, such as high blood pressure, high cholesterol, and insulin resistance, according to new research published in the Journal of the American Heart Association. The study, which analyzed data from over 1,000 participants in Denmark, found a significant association between increased recreational screen time and higher cardiovascular and cardiometabolic risks among youth.
The research underscores the potential health implications of screen time, particularly for those who sleep fewer hours, suggesting that screen use may harm health by reducing sleep duration. "Limiting discretionary screen time in childhood and adolescence may protect long-term heart and metabolic health," said study lead author David Horner, M.D., PhD., highlighting the importance of balanced daily routines for young people.
Further analysis revealed that each additional hour of screen time was linked to a slight increase in cardiometabolic risk scores, with the effect being more pronounced in adolescents. The study also identified a unique metabolic signature in the blood associated with screen time, offering new insights into the biological impact of screen habits on heart health.
Amanda Marma Perak, M.D., M.S.CI., FAHA, emphasized the role of sleep in mitigating screen time's effects, advising parents to model healthy screen use and encourage activities that do not involve electronic devices. The findings call for a broader discussion on screen habits during pediatric appointments, akin to advice on diet and physical activity, to safeguard the heart health of future generations.
