This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
The disability adjusted life years (DALY)s lost due to neoropsychiatric disorders is highest in - 
Select and explain. 
A. Bipolar effective disorders, B. Unipolar depressive disorders, C. Panic disorders, D. Obsessive compulsory disorder
B: Unipolar depressive disorders
Answer: B: Unipolar depressive disorders 
Explanation: The disability-adjusted life year (DALY) is a measure of overall disease burden, expressed as the number of years lost due to ill-health, disability or early death. It was developed in the 1990s as a way of comparing the overall health and life expectancy of different countries. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 26