a red beaded bracelet that is worn by anorexics who are proud of their eating disorder. It is a symbol known by almost all anorexics. An anorexic can easily identify another one if they are wearing this bracelet. The pro-ana bracelet is also worn by anorexics as a constant reminder to always stay strong and avoid eating.
Girl 1: Maria looks too skinny. I didn't see her eat anything except a carrot stick for lunch. I wonder if she has an eating disorder.
Girl 2: Obviously Maria has anorexia and is proud of it, she is wearing a red beaded pro-ana bracelet.