Medical Notes: Week of September 12, 2021

A new study shows that naps don't make up for lost sleep. Then, research finds that people who have someone they can count on to listen to them have brains that age much slower than others. Next, a study suggests that for teens, a close, supportive bonds with their fathers is even more important than previously thought. And finally... a study says social media 'shares' and 'likes' have altered conversations by encouraging outrage and anger.