Smartphone addiction ruins sleep, study says, but you can fight back

(CNN)Addiction to smartphones will result in poor sleep, according to a new study.

The study, published Tuesday in Frontiers in Psychiatry, looked at smartphone use among 1,043 students between the ages of 18 and 30 at King's College London. Researchers asked the students to complete two questionnaires on their sleep quality and smartphone usage, in person and online.
Using a 10-question validated scale that was developed to assess smartph