This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Thiamine deficiency is known to occur in all of the following except: \nSelect and explain. \nA. Food Faddist, B. Homocystinemia, C. Chronic alcoholic, D. Chronic hea failure patient on diuretics', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer is B (Homocystinemia): All options other than homocyctinemia have been clearly mentioned as causes of thiamine deficiency. Causes of thiamine deficiency -Harrison Malnutrition Dietry habits paicularly in the far-east where polished rice e deficient in thiamine is the major dietry component. Alcoholics and food faddists c):In western nations the wide spread use of thiamine enriched flour limits the presence of cleliciency primarily to alcoholic andPod faddists - Harrison 15th/ 14th Chronic hea failure (): The measurement of thiamine pyrophosphate effect can biochemically quantitate thiamine stores. An elevated TPPE indicative of thiamine deficiency has been found in 20 to 90% of patients with chronic hea failure. The deficiency appears to result from both, reduced dietry intake and a diuretic induced increase in urinary excretion of thiamine - Harrison', 'role': 'assistant'}]