AUTHOR=Brandt Kirsten TITLE=Commentary: Vitamin C and Metabolic Syndrome: A Meta-Analysis of Observational Studies JOURNAL=Frontiers in Nutrition VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2021.810716 DOI=10.3389/fnut.2021.810716 ISSN=2296-861X