Sudden and severe weight loss. This is the symptom that most people think of when they hear the word anorexia, but really it just one of many signs of anorexia-preoccupation with or obsession about food and/or weight. Withdrawal from social situations, especially those involving food. People with anorexia often avoid eating in public. Lying about their weight and how much food they eat. People with anorexia may pretend to eat in order to avoid confrontations about their condition. Strange eating habits, such as cutting food a certain way or only eating one food. Anorexic people may experience severe anxiety if their rituals are interrupted or questioned. Health problems. People with anorexia are subject to a large number of health problems, including weakness, dizziness, and lethargy. These problems are likely due in part to low blood pressure. Another sign you might notice is lack or menstruation. Abusing diet pills and/or laxatives. Exercising excessively. Restrictive eating habits.