i doubt whether you want my advice, because i am against fasting and juicing. i think it is detrimental to the body. keep in mind that vitamins and minerals work synergistically, so if you are deficient in one, it can affect how the others work. you need balance as much as possible. our digestive system was meant to be used. if we do not use it (and that means eating solid food), it can screw things up. yes, deficiencies often show up via the teeth.