I just returned from an inspirational week-long conference on the science and application of integrative medicine. Highly informative, the theme heard again and again was that mitigating stress through a combined approach of mind-body work, proper sleep, exercise, reducing toxin load and eating a nutritious diet was highly effective in combating illness—and had a much greater impact on prognosis than traditional western medical treatments—whether that “illness” be mental or physical.
What I didn’t hear much of (or at least not enough of) was the impact of screen-time on stress and illness severity, particularly in regards to mental disorders, which are highly sensitive to stressors of any kind. A primary goal of the integrative medicine approach is to take the body out of fight or flight mode and into healing mode as much as possible. How can we ignore the impact of screens which assault us daily? Screen-time has a lot of negative health effects, but this post will focus on studies that link screen-time to stress markers.
Study Findings on Electronic Screen Media Associated with Physiological Stress Markers
1. Computer game playing assessed as valid psychological stressor to induce physiological effects of stress, including changes in autonomic tone (heart rate and blood pressure), EMG (muscular activity), Galvanic Skin Response (skin conductivity) and cortisol levels. (Sharma et al, 2006)
2. Computerized games can impair blood sugar control and delay digestion (Blair et al, 1991)
4. Screen-time associated with narrowed vasculature of the retina (narrowed vessels at the back of the eye—a cardiovascular risk) in children, while time spent outdoors associated with healthy retinal vasculature (Gopinpath et al 2011)
5. Screen-time associated with metabolic syndrome (high blood pressure, blood sugar dysregulation, high lipids, obesity) in adolescents independent of physical inactivity (Kang et al, 2010)
6. Video game playing associated with increased food intake in adolescents (Chaput et al, 2011)
7. Exposure to EMFs (electromagnetic fields) from cell tower is associated with perceptual speed increase and accuracy decrease (consistent with fight or flight response), and sleep problems (Hutter et al, 2006)
Hopefully these studies provide some food for thought. Advising parents to severely limit screen-time is often met with resistance, and part of that resistance I believe is due to an under-appreciation of screen-time’s potent effects on the stress response. Looking at evidence clearly linking screens to stress markers can help fill that gap and push all of us to remember that strict limitation of screen-time should be an essential component of an integrative approach to mental wellness.