Science has finally uncovered the evolutionary reason why we tend to bite our nails, touch our face, or fidget when under stress.

Too much screen time increases the risk of behavioral problems in kids such as ADHD, aggression, anxiety and depression, according to new research.

One in four respondents deal with anxiety at least once per week, and 40 percent deal with muscle aches on most days.

Previous studies have found that binge drinking during adolescence actually alters a person's brain chemistry.

Researchers say disulfiram, an FDA-approved alcoholism treatment, also has the ability to reduce anxiety levels in mice.

Adults regularly meeting the recommended amount of exercise weekly were 17 percent less at risk of suffering a major adverse cardiovascular event.