Haven't read this whole thing, but I have tried to cut out processed foods. Right now I'm at a point where if I eat processed foods, especially fast food or restaurant foods I feel like I'm dying the next day (in and out of the bathroom, sick to my stomach, headaches, mood swings). I cut out soda a long time ago, and junk food early this year. The only time I drink soda now is with booze, which isn't that often. I haven't cut out things like pasta or dairy, but I've cut back on pastas and breads... I just can't part with cheese! But, I'm trying to eat a mostly meat and plant diet. It's nice, and makes me feel much better physically and mentally.

Vitamine b complex has also helped me with my fatigue problems, kind of. They're not gone, but I'm not about to fall asleep on the bus. It helps with mood as well.

Things like breads and pastas can really mess with your mood. And (apparently) a mostly raw food (plant) diet also helps with mood, though I haven't tracked this.

ps, check out the documentary "food matters" it's on (Canadian) Netflix and it gives good insight in to using vitamins to treat health problems including depression.