Living With Depression (this site has some good pages if you know someone with depression and want to know more, also good if you have depression and want to share this info with friends & family)
Depression is one of the most common mental disorders affecting 340 million people in the world today, accounting for a full 10% of productive years lost throughout the world.
About half of all cases of depression is unrecognized and untreated.
...depression affects at least one in 50 children under 12 and one in 20 teenagers.
"Major depression is the leading cause of disability (measured by the number of years lived with a disabling condition) worldwide among persons age five and older."
Of the many millions of Americans who suffer from depression in any given year, 80% can be effectively treated, but only 30% seek help. -SAVE (Suicide Awareness Voices of Education)
Depression is common, affecting about 121 million people worldwide. Depression is among the leading causes of disability worldwide. Depression can be reliably diagnosed and treated in primary care. Fewer than 25 % of those affected have access to effective treatments.