Marta Favara, Maria De Los Ángeles Molina, Alan Sánchez, Kauser Mohsini, Tassew Woldehanna, Alula Pankhurst, Ellanki Revathi, Antonio Campos, Katherine Curi-Quinto, Vanessa Rojas, Cohort Profile Update: The Young Lives study, International Journal of Epidemiology, Volume 55, Issue 3, June 2026, dyag087, https://doi.org/10.1093/ije/dyag087

The original Young Lives cohort profile was published in 2012. It describes the study participants, the data collected in Rounds 1–3 of both the quantitative and qualitative surveys, and the attrition rates. An update was published in 2021. It describes Rounds 4 and 5 of the quantitative surveys and the data collected through three phone calls (Calls 1–3) in 2020, as part of Round 6. This paper describes the latest survey, Round 7, conducted in 2023 to capture participants’ transition into adulthood. Round 7 was administered through in-person interviews, except at two sites in the Amhara region of Ethiopia, where phone interviews were conducted due to armed conflict.