Has anyone tried Niacin or eating more protein for depression?

[asdfg]

One of the symptoms of Niacin deficiency is depression. The body can make Niacin from the amino acid tryptophan (amino acids form protein). Now I don't mean to be crude here, but maybe some people here are lacking in Niacin or protein in their diet? Just trying to help.

[asdfg]

did i mention the body can also convert tryptophan into serotonin...im assuming most of the people here know the effect of serotonin on happiness