Hi i am 16 years old how many grams or mg of zinc per day i need to grow taller or helps all body to grow well?

American Diet: I am not sure where you got the notion you need extra zinc or magnesium to grow taller. That is a false myth. The american diet provides plenty of what you need as a teenager to reach the height your genes will allow. The bigger question here is do you get enough protein in your diet. That is the really only thing that could hinder the growth if you were not eating plenty of protein in one day.