Correcting Metabolic Deficiencies May Improve Depression Symptoms

A nurse assistant at the mental hospital told me how none of their patients have a normal temperature - they're all 96 or 97 degrees. That's quite a clue to one of the causes of mental problems.

I'm curious about the intervention this link reports on. I wonder if it's an amino acid supplement. My bottle of L-Tyrosine says it's used for the production of neurotransmitters...