The Longitudinal Ageing Study in India is the world’s largest and India’s first ever survey that provides a longitudinal database for designing policies and programmes for the older population in the broad domains of social, health, and economic well-being, in addition to understanding the science of ageing. In this paper, key findings from the baseline survey of LASI on a range of indicators that cover chronic health conditions, biomarkers (based on direct health examinations), healthcare utilisation, social and economic well-being of older adults in India and its states and union territories are presented.