Do you have a good citation for "Too little fat in the diet causes depression"? I did a quick search, and turned up a study in PLoS ONE[1] which found trans fa

Do you have a good citation for "Too little fat in the diet causes depression"? I did a quick search, and turned up a study in PLoS ONE[1] which found trans fatty acids correlate with increased depression, while there is a weak inverse relation to mono- and polyunsaturated fat intake. But a blog reviewing the study[2] points out some limitations. And some research mentioned at [3] apparently concluded there is a link between depression and DHA specifically, but if that's true it wouldn't affect only vegetarians: "Most people in the Western world do not get enough omega-3 fatty acids [such as DHA] in their diet."[4] Your claim is new to me, and as someone on a low-fat vegan diet, if you have a more conclusive reference I'd be curious to see it. [1] http://www.plosone.org/article/info:doi/10.1371/journal.pone.0016268 http://www.plosone.org/article/info:doi/10.1371/journal.pone... [2] http://evolutionarypsychiatry.blogspot.com/2011/01/dietary-fat-intake-and-depression-risk.html http://evolutionarypsychiatry.blogspot.com/2011/01/dietary-f... [3] http://www.fi.edu/learn/brain/fats.html http://www.fi.edu/learn/brain/fats.html [4] http://www.umm.edu/altmed/articles/docosahexaenoic-acid-000300.htm http://www.umm.edu/altmed/articles/docosahexaenoic-acid-0003...