Physicians, professors and research scientists affiliated with Health and Aging in Africa: Longitudinal Studies in South Africa (HAALSA)—the ten-year (and counting) project that has been following a cohort that started as 5,000 men and women aged 40 and over—have penned three pieces in The Conversation that delve into unique aspects of this burgeoning population: Pioneering researchers Stephen Tollman and Kathleen Kahn from the University of the Witwatersrand reflect back on…