Regularly watching short videos in TikTok, Reels, and Shorts formats is associated with poorer cognitive function and mental health. This conclusion was reached by the authors of a large systematic review and meta-analysis, published in the journal Psychological Bulletin (PB), synthesizing data from 71 studies with nearly 100 thousand people.
The analysis revealed a moderate negative relationship between engagement in short videos and attentional performance. The most pronounced effects noted were a decrease in concentration and impairment of inhibitory control – the ability to maintain concentration and suppress impulsive reactions. In other words, people who actively watch short videos are more likely to have difficulty concentrating and self-control.
Negative associations were also identified with indicators of mental health. Higher engagement with short videos is associated with increased anxiety and stress levels, as well as poorer sleep quality and overall health. These effects have been observed in both young and adult users.
In this case, the decisive factor, according to the authors, is not the viewing itself but the compulsive nature of the use. The most pronounced harm was seen in studies evaluating addiction to short videos, rather than just time spent on the app.
The authors emphasize that the identified connections do not prove a cause-and-effect relationship but point to the potential risks to cognitive and mental health of frequent and uncontrolled consumption of short video content.
Scientists have previously shown that using smartphones at night is linked to an increased risk of suicidal thoughts.
