What are first signs of anorexia?

Odd Food Behaviors: Preoccupation with food or dieting are generally the earliest signs of anorexia nervosa. The following are also early warning signs: refusing to eat, denying hunger, poor concentration, skipping meals, limiting intake to only certain foods, excuses for not eating, obsession with body size and shape, excessive exercise, wearing baggy clothes, and repeated weighing of themselves.

Age dependent: A great deal depends on the age of the patient. Children and adolescents will often present with social withdrawal as their first symptom, followed by gradual restriction of types and amounts of food. They may also begin to obsess about feeding others: cooking and especially baking, but refusing to eat what they make. Weight loss is a serious, inevitable consequence, often ignored by their md.