 The in-depth WHO SAGE collaboration provides valuable insight into the health and well-being of older adults in low- and middle-income countries. The collaboration has produced a dataset of over 46,000 individuals aged 50 and above from eight health and demographic surveillance system, HDSS, sites across Asia and Africa. The dataset includes self-reported health, health status, functioning from the WHO Disability Assessment Scale, who desires and well-being from the WHO Quality of Life Instrument, WHO COAL. The HDSS databases contribute age, sex, marital status, education, socioeconomic status, and household-sized variables. The collaboration also plans to release a second dataset containing additional HDSS variables and VINET-adjusted health variables. This article was authored by Paul Kovall, Kathleen Kahn, Nawee Ng, and others.