All you ever wanted to know about Vitamin B6 but were afraid to ask …

Thanks to Lakshmi, you have the answers to all the questions you never asked:

Deficiency of vitamin B6 causes a wide range of physical and physiological symptoms including irritability, nervousness, insomnia, general weakness, skin changes such as dermatitis, even dandruff and acne and lowered resistance to irritants and diseases. …

But here’s the clincher: “There is also a medical school of thought that B6 supplements merely have a placebo effect.”