Which eating disorder has people concerned with extreme food restriction and weight loss? bulimia nervosa binge-eating disorder anorexia nervosa orthorexia

## Step 1<br />The question is asking us to identify the eating disorder that is characterized by extreme food restriction and weight loss. <br /><br />## Step 2<br />Let's analyze each option:<br /><br />1. Bulimia nervosa: This disorder is characterized by episodes of binge eating followed by compensatory behaviors such as purging, fasting, or excessive exercise. While it involves food restriction, it is not primarily about extreme weight loss.<br /><br />2. Binge-eating disorder: This disorder involves episodes of eating large amounts of food, but it does not involve compensatory behaviors. It is not characterized by extreme food restriction or weight loss.<br /><br />3. Anorexia nervosa: This disorder is characterized by a fear of gaining weight, leading to severe food restriction and significant weight loss. This aligns with the description given in the question.<br /><br />4. Orthorexia: This is not a recognized eating disorder. It refers to an obsession with eating "right" or healthy, but it does not necessarily involve extreme food restriction or weight loss.<br /><br />## Step 3<br />Based on the above analysis, the correct answer is anorexia nervosa.