Non-addictive painkiller shows promise

Preliminary research on animals shows potential, but human studies have yet to be done.

Gamers lose out on sleep

Willingness to delay bedtime may point to addiction.

Prince’s painkiller spotlights danger of synthetic drugs

Opioid fentanyl and related street drugs highly lethal, addictive.

Smartphone addiction dials up concerns

Dependency on mobile devices negatively impacts sleep, school work and social skills.