Study: Lots of TV, little exercise may slow young adult brains

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INDIANAPOLIS (WISH) — A new study says young adults who watch a lot of TV and rarely exercise may slow down their young adult brains.

JAMA Psychiatry followed more than 3,000 people for 25 years. Researchers studied people around the age of 25, then after 25 years they took a cognitive test.

Those who participated in the study, filled out questionnaires about their TV habits and physical activity. Those who reported watching more than three hours of TV on a daily basis and exercised very little were twice as likely to score below average on two thinking tests.

Researchers said the tests measured thinking speed and the ability to plan and complete tasks.

Ronald Petersen, director of the Mayo Clinic Alzheimer’s Disease Research Center in Rochester, said the good news is people can do something about it by stepping away from the TV and getting more exercise.

Tina Hoang, a researcher at the Veterans Affairs Medical Center in San Francisco said if the study were to happen today, it would include all the time young adults spend with screens other than TVs.

She said playing a challenging video game or to read a book might on a screen might not be as bad for the brain as it is to sit and binge watch TV.

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