Varadarajan, S., Venguidesvarane, A.G., Rajamohan, M., Varadarajan, S. and Balaji, T.M. 2026. Changes in physical activity, dietary behaviours, and BMI among undergraduate health students before, during, and after the COVID-19 lockdown: a follow-up study. International Journal of Nutrology. 19, 1 (Jan. 2026). DOI:https://doi.org/10.54448/ijn26104.