Scientific American reviews the effect of exercise on depression, the effect of encouragement to exercise on exercising, the effect of bias on the consumption of information, and the effect the media can have on what people think they know.
Bastian, Hilda. “Holy sacred cow! Why reactions to the exercise and depression trial go to the heart of scientific controversy.” Scientific American. June 13, 2012
Exercise and Depression part the second: a critique of a critique, Scientific American, June 14, 2012