Getting a smartphone before age 13 may drastically increase the risk of poor mental health later in life, according to data from more than 100,000 people. Early use is linked to suicidal thoughts, ...

Too little sleep has long been linked to poor health. But a sweeping new study suggests the picture is more symmetrical than most people realize. Sleeping too much is also associated with faster ...

Share on Pinterest Research suggests that older adults with stronger rest-activity rhythms display signs of slower biological aging. Image credit: MNT Design/EyeEm ...