**Core Concept**
Binge eating disorder is a serious mental health condition characterized by recurring episodes of excessive food consumption accompanied by feelings of guilt, shame, or self-criticism. It is distinct from other eating disorders like anorexia nervosa and bulimia nervosa in terms of its symptoms and demographic prevalence.

**Why the Correct Answer is Right**
Binge eating disorder is the most common eating disorder, affecting approximately 2.8 million adults in the United States. This condition is marked by recurrent episodes of binge eating, which is typically accompanied by feelings of loss of control, self-criticism, and guilt. The pathophysiology of binge eating disorder involves complex interactions between genetic, neurobiological, and environmental factors, including stress, anxiety, and trauma. The disorder often co-occurs with other mental health conditions, such as depression and anxiety disorders.

**Why Each Wrong Option is Incorrect**
**Option A:** Anorexia nervosa is a more severe and less common eating disorder characterized by restrictive eating patterns, significant weight loss, and a distorted body image. While anorexia nervosa is a serious condition, it affects a smaller percentage of the population compared to binge eating disorder.
**Option B:** Bulimia nervosa is another eating disorder marked by recurrent episodes of binge eating followed by compensatory behaviors, such as self-induced vomiting or laxative use. Although bulimia nervosa is a significant concern, its prevalence is lower than that of binge eating disorder.
**Option D:** The statement that all eating disorders have the same prevalence is incorrect, as binge eating disorder is the most common eating disorder among the options listed.

**Clinical Pearl / High-Yield Fact**
Binge eating disorder often co-occurs with other mental health conditions, such as depression, anxiety disorders, and substance use disorders. A thorough evaluation of the patient's mental health history and current symptoms is essential for accurate diagnosis and treatment planning.

✓ Correct Answer: C. Binge eating disorder