LOS ANGELES: Spending long hours watching television may have negative effects on brain health over time, according to a new study conducted in the United States.
Researchers from the University of Southern California (USC) found that prolonged television viewing is associated with changes in the brain that may increase the risk of cognitive decline as people age.
The study involved more than 1,700 adults with an average age of 53 years, making it one of the larger investigations into the relationship between sedentary screen time and brain health.
According to the researchers, participants who spent extended periods watching television showed signs of adverse changes in brain structure and function over time.
The findings suggest that television viewing differs from other forms of sedentary behavior because it often involves long periods of uninterrupted sitting combined with relatively low levels of mental engagement.
Researchers believe that replacing some television time with physical activity, reading, social interaction, or mentally stimulating activities may help support long-term brain health.
The study also emphasized that regular exercise, a balanced diet, adequate sleep, and staying socially active remain important factors in reducing the risk of age-related cognitive decline.
While the research found an association between prolonged TV viewing and changes in brain health, it does not prove that watching television directly causes brain damage. The authors noted that additional studies are needed to better understand the relationship and the underlying biological mechanisms.
Health experts recommend limiting prolonged periods of sedentary behavior by taking regular breaks, engaging in physical movement, and maintaining an active lifestyle to support both physical and cognitive well-being.
The findings add to growing evidence that lifestyle habits in midlife can have a significant impact on brain health and cognitive function in later years.
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