Food that is good for your mood is also good for every cell in your body. The best way to understand how that works, is to shift our perception of how our bodies use food. Food is much more than fuel or calories.
Depression is a difficult companion. For me it is like having an unwanted and malevolent daemon, sometimes lurking on the periphery of my consciousness, sometimes right up close and tripping me up and sometimes smothering me completely. It can stalk me stealthily for weeks, edging closer and closer, or it can swoop upon me suddenly.