Vit B12 deficiency: mental disorders, including irrational anger. B-12 is found only in animal foods. Liver is rich source.
Replying to @DietHeartNews
@DietHeartNews @rhh it's true that vegans need to supplement B12, but not true that it's only in animal foods. B12 is bacterial in origin.
12:20 PM - 19 Jan 2014
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