This is a small study but there have been others.  Sometimes depression needs to be treated in ways other than antidepressants and therapy.   https://www.sciencedaily.com/releases/2016/08/160812073656.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fmind_brain%2Fdepression+%28Depression+News+–+ScienceDaily%29