According to the Mood Disorder Society of Canada, about 1.3 million Canadians suffer from depression.

Countless movies and TV shows make light of women’s so-called “moodiness”, often jokingly attributing it to their menstrual cycle or, conversely, to menopause. In fact, mood disorders are a serious and pervasive health problem, and large-scale population studies have found women are 1.5 to 3 times more likely to suffer from major depressive disorder than are men.

The discovery of a novel molecular switch that powerfully modulates nerve cell activity offers the potential for new mood disorder and epilepsy treatments, University of California, Irvine researchers report.

There’s depression, and then there’s double depression.
Sound bad" It is, according to Thomas Joiner, Florida State University Distinguished Research Professor and the Bright-Burton Professor of Psychology, who has identified hopelessness as a distinguishing feature of double depression in a new paper published in the Journal of Affective Disorders.