AUTHOR=Merchant Anwar T. TITLE=Grand challenges in oral health and nutrition: We are what we eat JOURNAL=Frontiers in Oral Health VOLUME=3 YEAR=2022 URL=https://www.frontiersin.org/journals/oral-health/articles/10.3389/froh.2022.999817 DOI=10.3389/froh.2022.999817 ISSN=2673-4842