Nutritional Changes and Contributing Factors in Iran: A Comprehensive Study From PERSIAN Cohort Study (2015–2017 and 2021–2023). - Najafi, Farid; Izadi, Neda; Rezaeian, Shahab; Pasdar, Yahya; Shadmani, Fatemeh Khosravi; Bagheri, Amir; Poustchi, Hossein; Eghtesad, Sareh; Pourfarzi, Farhad; Nejatizadeh, Azim; Farjam, Mojtaba; Joukar, Farahnaz; et al. (Food Science & Nutrition, 2026)