If you've ever had a concussion, you may have heard that you should take it easy for two weeks or so before easing back into your regular activities.

American men are having children at increasingly older ages, according to a new study.

Staying friends with an ex is a "very pervasive phenomenon," says one psychologist. But these friendships aren't always successful.

School-age kids may be biased against their peers who are overweight or obese and not even know it, a new study finds.

When people feel lonely, they may become more self-centered, which, in turn, can make them even lonelier, thus fueling a vicious cycle.

It's a fact of life that newborns cry, but a new analysis of nearly 8,700 infants reveals that babies cry and fuss more in certain countries than in others.

The brain center that links breathing and calmness has been found.

Model Chrissy Teigen recently revealed that she had postpartum depression, a condition that often left her with too little energy to leave the house.

People with symptoms of depression may see temporary improvements to their mood by following the age-old advice to sit up straight.

The popular child's teething toy Sophie the Giraffe can grow mold inside, according to reports from some parents.