Researchers from Hanyang University in Korea found that people aged 13 to 18 who used their phone for less than two hours a day had a lower risk of depression, sleep issues, stress, suicidal thoughts and alcohol addiction than their peers who did not use one at all.
'One to two hours of usage time was protective against suicide attempts... From our results, using smartphones for less than two hours a day even seems beneficial for mental health outcomes compared to non-use,' the researchers said.
'Our study showed that adverse effects of health outcomes manifested after four hours of smartphone usage time, which corresponds with previous studies,' they added.
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