Dieting depresses me. From personal experience, I believe that depression and low carb dieting do not mix well. I stupidly did Medifast (very low carb + very low calorie) and while the weight fell off of me at a rapid rate I ended up severely depressed. I don't have a history of depression at all (anxiety and ptsd is my thing) so this threw me for a loop. I read The Serotonin Power Diet, which is actually intended for people on SSRIs, but the information about carbs and how they correlate to serotonin production is interesting. I'm full Paleo now, but I eat white potatoes and other starchy vegetables with reckless abandon.