Each daily hour of passive "screen time" has the same effect on arteriolar narrowing as a 10-mm-Hg increase in systolic blood pressure in children, a study of the retinal microvascular structure of six-year-olds shows...It is not the TV.
Previous studies in both adults and children show that narrower retinal arteriolar calibers and wider retinal venular calibers are markers of cardiovascular disease risk factors such as obesity and high blood pressure, and changes in retinal vessel caliber in adults mark subclinical cardiovascular disease and suggest a risk of future vascular events, according to Dr Bamini Gopinath (University of Sydney, Australia).
It is too many Calories in and not enough out.
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