AUTHOR=Chen I-Wen , Wang Wei-Ting , Lai Yi-Chen , Chang Ying-Jen , Lin Yao-Tsung , Hung Kuo-Chuan TITLE=Association between vitamin D deficiency and major depression in patients with chronic kidney disease: a cohort study JOURNAL=Frontiers in Nutrition VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2025.1540633 DOI=10.3389/fnut.2025.1540633 ISSN=2296-861X