If you aim for 2 hours or less of screen-time a day you'll eliminate most or all of the the risk (assuming no other risk factors).

The more time you spend being screen-free the greater the investment in your brain--especially when you're young. I always suggest to people to do a 3-4 week electronic fast to reset the brain and to form new habits. Trying to simply "moderate" does not work in young people in my experience, without doing the fast first.

Dr Dunckley

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