This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Major Depression, Subject name: Psychiatry
[{'content': "What is the most common cause of DALY'S in world? \nSelect and explain. \nA. Schizophrenic, B. Mania, C. Depressive Disorder, D. Alzheimer's", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Depressive Disorder* DALY s is Disability Adjusted Life years.* It is a measure of the burden of disease in a population and the effectiveness of the intervention.* DALYs express years of life lost to premature death and years lives with disability adjusted for the severity of the disability.* One DALY is "one lost year of healthy life"* According to Park 21st ed. Most common cause of DALYs is depressive disorder.', 'role': 'assistant'}]