About 5 percent of American adults experience seasonal affective disorder, typically in the fall and winter months.

Postpartum depression is the most prevalent psychological post-childbirth condition, affecting as many as 1 in 7 women and 1 in 10 men.

About 9 percent of American children have attention-deficit/hyperactivity disorder (ADHD), and one-third of those will continue to have it in adulthood.

These fatty acids are crucial for eye, neurological, and psychological health, but is supplementing heart-healthy? Explore both sides of the argument.

Eating disorders, which often develop in adolescence, affect an estimated 28.8 million people in the United States.

Afflicting 5 in 100 American adults annually, PTSD more often affects women than men and veterans more than civilians.

It is estimated that 21 percent of women and 11 percent to 13 percent of men in the United States have dealt with major depression at some point.