Wintergirls by Laurie Halse Anderson

This is a seriously intense book about 18 year old Lia, who suffers from anorexia. Her best friend Cassie, whom she has been estranged from for the past 6 months, has been found dead in a hotel room.
Lia's cell phone shows that Cassie had called her repeatedly in the last two days of her life.
As Lia spirals further into anorexia, she remembers her relationship with Cassie, who suffered and died from bulimia.
The book is raw and chilling, and shows the insanity that goes on in the thoughts of anorexic girls as it is written in a lyrical, slightly insane sounding style of writing.
Thought provoking discussion questions are included at the end of the book.