This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Indicators of Health, Subject name: Social & Preventive Medicine
One DALY signifies? 
Select and explain. 
A. 1 year of disease free life, B. 1 lost year of healthy life, C. 1 month of bedridden life, D. None of these
B: 1 lost year of healthy life
Answer: B: 1 lost year of healthy life 
Explanation: ANSWER: (B) 1 lost year of healthy lifeREF: Park 20th edition page 26DISABILITY ADJUSTED LIFE YEAR (DALY):DALY 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"