For much of its history, television has had a mixed reputation, because as other inventions, along a positive, educational potential, broadcast important information and related functions, is another rather negative aspect of mass manipulation, numbness collective wisdom, voluntary distraction of entire societies and more. In short, we can see a documentary about life on Earth, but also lose 4 or 6 continuous hours watching an entertaining series but perhaps no further value-and the most common is to do the latter.
But beyond the social impact, it seems that television also has an individual effect, specifically in the brain. According to a study published in the journal JAMA Psychiatry, the habit of watching TV is related to poor cognitive performance in adults.
The research included 25 years and analyzed data corresponding to 3,247 people between 18 and 30 years, who answered questions about their lifestyle, the daily time spent on television and some other related physical activity habits. This questionnaire was answered at baseline and after periods of 5 years to complete the 25. In addition, the sample included both different age groups and gender, race and education level, with an average age of onset of 25.1 years.
Among the preliminary findings, it was found that at least 353 people watched more than three hours of TV a day, followed by two thirds of the participants were categorized as high consumers of television programming; the rest rated as moderate or low consumers.
The effect of cognitive spend much time watching television is associated with a sedentary lifestyle. Their specific consequences can be, for example, not having the ability to know how to manage time to achieve a goal or to recall words or abstract concepts. People in the study who spent 3 hours or more watching television showed a poor performance in studies that measure these skills.
According to the researchers, “physical activity during youth could preserve cognitive functions and contribute to cognitive reserve by increasing neurogenesis and synaptic plasticity. “
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