Jasbi, Paniz, Mohr, Alex E, Shi, Xiaojian et al. · Scientific reports · 2022 · DOI
This study looked at gut bacteria and their chemical byproducts in 60 college students who spent either a lot of time on screens (more than 75 minutes daily) or very little time. The researchers found that students with high screen time had different gut bacteria and metabolites than those with low screen time. The findings suggest high screen time might be linked to problems with how cells produce energy and process amino acids, which could connect to conditions like chronic fatigue syndrome and inflammatory bowel disease.
This is the first molecular-level study linking screen time to microbiome and metabolic changes that may involve mitochondrial dysfunction—a process implicated in ME/CFS pathophysiology. The finding of a potential connection between screen time and chronic fatigue syndrome provides a new environmental factor to investigate in ME/CFS research, and the metabolomic approach offers testable hypotheses for future mechanistic studies.
This study does not prove that high screen time causes chronic fatigue syndrome or other diseases—it only shows associations in a healthy college population. The cross-sectional design captures only a moment in time and cannot establish causality or determine whether screen time changes the microbiome or vice versa. The results are based on self-reported screen time, which is prone to measurement error and bias.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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