Anorexia Before After Photos How Long Does It Take Before Noticable Effects Of Anorexia Appear?

How long does it take before noticable effects of anorexia appear? - anorexia before after photos

One of my friends have stopped eating .. And try to help myself and other friends before things get really bad. The only fear of side effects before supporting it enough. How long does it without food, to take someone seriously affected? O noticeable impact?