Over the past year, a woman has cooked gourmet meals for her family but eats only tiny servings. This person wears layered loose clothing. Her current weight is 42 kg, a loss of 14 kg. Which medical diagnosis is most likely?

Choice A reason: Anorexia nervosa is characterized by significant weight loss (42 kg is very low for an adult), a preoccupation with food (cooking gourmet meals for others), and attempts to hide the body (wearing layered, loose clothing). These behaviors are classic indicators of the intense fear of weight gain seen in this disorder. Choice B reason: Eating disorder not otherwise specified (now often categorized as OSFED) is used when a patient's symptoms cause significant distress but do not meet the full, strict criteria for Anorexia or Bulimia. This patient’s dramatic weight loss and specific behavioral patterns fit the primary diagnostic criteria for Anorexia Nervosa. Choice C reason: Major Depressive Disorder can cause weight loss due to anorexia (loss of appetite). However, the specific behaviors of cooking elaborate meals for others while restricting one's own intake and wearing layered clothing to hide weight loss are specific to the psychopathology of an eating disorder rather than depression. Choice D reason: Bulimia Nervosa involves episodes of binge eating followed by compensatory behaviors like purging. Patients with bulimia usually maintain a weight that is within or slightly above the normal range. The patient's extremely low weight of 42 kg and restrictive eating habits point toward the restrictive type of Anorexia.