According to the Health Alert newsletter, and biochemistry textbooks, the symptoms for neuropsychiatric disorders are the same as those listed for Vitamin B deficiencies! Who knew?!
Also, another fact about Vitamin B: most B vitamins sold in US are derived from coal tar…really, from India or China. One place in US makes it; Reilly Tar and Chemical, in Indiana, I think. The vitamins are left after tar and creosote are extracted. Makes you want to look for more whole food sources of nutrients, doesn’t it?