Science and Technology
January 3, 2026DOOMED SCROLLING
Screen time may increase heart disease risks, recent study warns
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Minors around the globe remain hooked on the glare of their devices from sunrise to sunset. This pastime seen rising among the youth may heighten their risk of heart attacks and strokes, as a study published in the Journal of the American Heart Association suggested.
The results found a subtle and positive association between the screen time of children and adolescents and these health concerns. As each additional hour glued to these gadgets continues to pile up, driving forces toward cardiometabolic and cardiovascular conditions, such as waist circumference, insulin resistance, and arterial blood pressure.
In an assessment of the parental- and self-revealed device usage of more than 1000 young subjects followed by two observational studies over time, the habit—or in more severe cases classified as a “computer addiction”—shows the telling signs of a distinct blood-based metabolic signature. A machine learning prediction model in the study discovered 37 metabolite (i.e. sugar, fat, and amino acid) biomarkers predicting the screen time of both children and adolescent participants at a high rate. Many of these biomarkers have been previously linked to obesity‐related traits and lipid metabolism, such as elevated fat content in the blood.
“Adolescents with both obesity and excessive screen time had the highest hypertension prevalence (52.4%), significantly exceeding those with either risk factor alone.”
“More than 8 h of daily screen time was also associated with lower HDL cholesterol.”
The findings also indicate that how long a person sleeps is a significant moderating factor in the relationship of these health risks to the average media-called “doom scrolling.” The researchers explained that screen-light exposure in the evening reduces melatonin—the brain chemical regulating the human sleep and wake cycle—disrupting our natural sleep schedule.
In an age where screen time is leisure and resting while being unplugged from the digital space is a rare and anxious experience for younger generations, screen time might inflame the onset of heart conditions more than it can irritate one’s eyes in the middle of the night.



