| | Conditions & Treatments | Anorexia What percentage of girls have anorexia? The estimated prevalence of anorexia nervosa in females is approximately 0.5% to 1% worldwide, although it may vary across countries and communities. Anorexia - Related Articles How to Use Blood Tests to Detect Anorexia What restriction does an person have if there intolerant? What is a compulsive gambler? What usually have anorexia? Why does anorexia and bulimia exist? How can you tell if someone is becoming anorxic? What Is Pro Ana Weight Loss?