In 2007 Mr Blumenthal and couple more smart people published a paper in which they compared outcomes of different treatments for patients with major depression. They were trying to find out if after weeks of treatment (1 -medication, 2 - supervised exercise program, 3- home based exercise program and 4 - placebo pill) patients will still meet criteria for major depression.
Medication had 47% remission of symptoms, supervised exercise 45% and home-based exercise 40%. And to my surprise even placebo did it's job - 31% remission.
What did I take from here:
Good thinking will help (placebo), but most importantly the exercise seems to be as effective as antidepressant medication.
Obviously there is no single treatment that is good for everyone, but shouldn't we try more to exercise?