This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sleep Disorders, Subject name: Psychiatry
Which of the following statement is false regarding bulimia nervosa? 
Select and explain. 
A. Weight is normal, B. Common in females, C. Onset in early adulthood, D. Mortality is high
D: Mortality is high
Answer: D: Mortality is high 
Explanation: Ans. D. Mortality is highCommon Characteristics of Anorexia Nervosa and Bulimia Nervosa Anorexia NervosaBulimia NervosaClinical CharacteristicsOnsetMid-adolescenceLate adolescence/early adulthoodFemale: male10:110:1Lifetime prevalence in women1%1-3%WeightMarkedly decreasedUsually normalMenstruationAbsentUsually normalBinge eating25-50%Required for diagnosisMortality5% per decadeLowPhysical and Laboratory FindingsSkin/extremitiesLanugoAcrocyanosisEdema CardiovascularBradycardiaHypotension GastrointestinalSalivary gland enlargementSlow gastric emptyingConstipationElevated liver enzymesSalivary gland enlargementDental erosionHematopoieticNormochromic,normocytic anemiaLeukopenia Fluid/ElectrolyteIncreased BUN,creatinineHypokalemiaHypokalemiaHypochloremiaAlkalosisEndocrineHypoglycemiaLow estrogen or testosteroneLow LH and FSHLow-normal thyroxineNormal TSHIncreased cortisol BoneOsteopenia