what causes mental illness?

Many studies on the relationship between nutrients and mood have been done with interesting results.
From the research it is clear that no one single nutrient, with the exception of Lithium, can provide a reliably effective treatment for mood disorders. Rather the evidence implies that a broad range of nutrients are involved in achieving optimum mental stability.

clinical trials

mechanism of nutrient action

nutrient & genetic factors in brain function

nutrient-dependent brain functions

references