I experienced similar things too when I was anorexic, though my family intervened when it became noticable that something was wrong. My hair became extremely dry and started breaking off in the middle of the hair shaft. I also had a hard time holding food down when I tried to eat normally for the first two months. After that, my hair slowly returned to normal.
3b/c, medium-coarse, low porosity, low density
HG: Jessicurl Too Shea and Kinky Curly Curling Custard
Shampoo: nonsulfate shampoo and Suave Naturals sulfate shampoo when needed