Anorexia Recovery & Treatment

my friend is 288 pounds and shes in the 9th grade.
she hasn’t ate for a day and half because shes depressed her boyfriend of a year and a half broke up with her. Shes considering Anorexia, and i would like to know the side affects to help her and also how long. she thinks she can loose 40 pounds in two weeks by not eating nothing at all and also not exercising. please help.

Most websites say that anorexia is treated by health professionals, but I need to know how!

How common is it for someone to have recovered from anorexia to relapse?

Like when does your teeth start to rot and when does your hair start to fall out and when do you start to feel blackouts etc..

Health class.

I found that I have been quite weight conscious recently. I haven’t binged or purged or started dieting yet, but I’m planning to start dieting. I’m just afraid that I won’t be able to handle it.