All of the following are true regarding anorexia nervosa except: A. mean age of onset is 17 years B. prevalence in late adolescence and early adulthood is 0.5% to 1.0% C. about 70% of anorexia nervosa patients are females D. genetic and environmental factors are responsible E. more common in industrial countries 2. All of the following are true about bulimia nervosa except: A. usually begins in adolescence or early adult life B. prevalence in adolescence and young adult females is 1% to 3% C. about 90% of bulimia nervosa patients are female D. patients are typically obese E. two subtypes: purging and nonpurging type
The Correct Answer and Explanation is :
For the first question regarding anorexia nervosa:
Answer: C. about 70% of anorexia nervosa patients are females
Explanation:
Anorexia nervosa is a severe eating disorder characterized by a restrictive diet and an intense fear of gaining weight. While it predominantly affects females, the figure of 70% is an exaggeration. Research suggests that approximately 90% of individuals diagnosed with anorexia nervosa are female, with males making up only a smaller percentage of cases. The other statements are accurate in describing anorexia nervosa:
- A: The mean age of onset is typically between 16 and 17 years.
- B: Prevalence is around 0.5% to 1.0%, especially in adolescents and young adults.
- D: Both genetic and environmental factors contribute to the development of anorexia nervosa.
- E: Anorexia nervosa is more common in industrialized countries, likely due to sociocultural pressures related to body image.
For the second question about bulimia nervosa:
Answer: D. patients are typically obese
Explanation:
Bulimia nervosa is an eating disorder involving episodes of binge eating followed by compensatory behaviors like vomiting, excessive exercise, or the use of laxatives. The majority of patients with bulimia nervosa are not obese; rather, they tend to have a normal weight or may even be underweight. Obesity is not typical for this disorder. The other options are correct:
- A: Bulimia nervosa typically begins in adolescence or early adulthood.
- B: Prevalence in young females is about 1% to 3%.
- C: Approximately 90% of those affected by bulimia nervosa are female.
- E: There are two subtypes of bulimia nervosa: purging (vomiting or using laxatives) and nonpurging (restricting food intake or exercising excessively).
Both anorexia nervosa and bulimia nervosa are serious conditions with significant physical and psychological consequences, requiring proper treatment and support.