The notoriously short night's sleep that many tired adolescents get isn't all about surging hormones and too much homework, according to a sociologist who looked at shifting sleep patterns from ages 12 to 15. Teens who report good relationships with family and schoolmates tend to sleep better.
There's never been more information about how to live a healthy life, yet the goal sometimes seems impossible to reach. We sort through the latest news on how to eat better, live longer and stay well.
A new kind of mammogram that takes many X-rays to make a three-dimensional image can help doctors find cancer and reduce false alarms. But it's still unclear who might benefit from the technique, and whether it's worth the higher cost and double dose of radiation.
The proposition that some extra weight may not be a health worry has sparked a heated medical debate. Some studies have found that a little extra fat might have benefits. A new analysis suggests that for almost all people excess weight increases the risk of death and disease.
Left-handedness has been linked to everything from early death to schizophrenia over the past 150 years. While the associations spark curiosity and sometimes concern, it's been difficult to draw solid scientific conclusions, one way or the other.
KHNThe technological trials for the online health insurance exchanges have turned an enrollment period that was supposed to be a leisurely three-month stroll into a last-minute sprint for millions of Americans. People who want coverage that starts at the beginning of 2014 need to sign up no later than Dec. 23.
Scientists agree that teenagers naturally go to bed late and sleep late, too. But high school start times are traditionally very early. Proponents of later start times say they're finally getting traction. The result, they say, will be happier kids who do better in school.
Teenagers say their parents often don't realize how overwhelmed they feel about school. Psychologists say parents can help children manage their expectations and live a more balanced life, even if it means not racking up as high a GPA as their friends.
Scientists have identified special cells in the brain's hippocampus that mimic a trick of some digital cameras. These cells automatically 'tag' the memory of each event in our lives with information about where that event took place — the better to recall, perhaps, where we left our lost keys.
Women with naturally higher levels of estrogen after menopause don't have better memory or mental skills, Stanford researchers say. It's yet another dent in the long-held belief that the hormone is linked to mental sharpness.
Developmental psychologists are trying to figure out what very small children know and when they know it. The answer: a lot, and a lot earlier than you think. One experiment finds that 18-month-olds can reason abstractly when sorting blocks, well before they are able to explain it.