Allison Ricciardi, LMHC examines the connection between sadness and depression. Is there a difference?

Allison Ricciardi, LMHC examines the connection between sadness and depression. Is there a difference?
We’ve seen since the 1960’s among both men and women an exponentially epidemic of depression in the United States and other Western countries. What’s at the heart of this epidemic of depression?
Facebook has this nifty feature in which you can view what happened in the past on that very day. Often I’ve forgotten what happened 6 or 7 years ago, sometimes even a year ago.