sleep

People struggling with insomnia often turn to apps to help them fall asleep. But scientists say only some apps use proven methods that can help address the underlying causes of sleeplessness.

Tech evangelists say consumer electronics that sense, stream and interpret vital signs will lead to better health and lower costs. But skeptics say reliability and privacy issues still loom.

As people get older, brain waves that occur during deep sleep become less synchronized. This appears to disrupt a system that saves new memories.

Lots of phone and tablet apps promise to improve sleep by filtering out the blue light from device screens. But that won't help if the reason you're not getting enough shut-eye is caffeine or stress.

A high school in New Mexico is experimenting with light-shielding lounge chairs where frazzled students can rest. Research suggests it leads to calmer, less anxious teens who do better in school.

Findings provide new evidence pushing back school start times, to let adolescents sleep and wake up when it's more natural, researchers say. It's going to bed late that creates problems.