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Different lifestyle factors and health conditions determine olfactory function; however, there is limited knowledge on the association with diet quality. We investigated the association between various dietary patterns and olfactory function, as well as hyposmia, in a general population study using cross-sectional data from 6,690 participants of the Cooperative Health Research in South Tyrol (CHRIS) study. We assessed self-reported dietary intake through the GA2LEN semiquantitative Food Frequency questionnaire, which was used to derive 5 established dietary pattern indices (Alternate Healthy Eating Index 2010, Mediterranean diet index, Plant-based dietary index, Healthy Plant-based dietary index, and Unhealthy plant-based dietary index), as well as various food groups. Olfactory function was measured through the Sniffin\u2019Sticks odor identification test, which allowed us to determine hyposmia with a score \u226412\/16. Multivariable ordinal and logistic regression models were fitted to investigate associations between each dietary pattern, food groups, and olfaction. Higher adherence to all healthy dietary patterns was associated with better olfactory function and lower rates of hyposmia, whereas the opposite pattern was observed for an unhealthy plant-based diet. Specifically, higher consumption of fruits, vegetables, coffee, and tea was beneficially associated with both outcomes. Higher adherence to healthy dietary patterns that are rich in plant-based foods was associated with better olfactory function and lower rates of hyposmia.<\/jats:p>","DOI":"10.1093\/chemse\/bjag028","type":"journal-article","created":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T11:50:22Z","timestamp":1790855422000},"source":"Crossref","is-referenced-by-count":0,"title":["Adherence to healthy plant-rich diets is associated with better olfactory function in the general population\u2014findings from the Cooperative Health Research in South Tyrol (CHRIS) study"],"prefix":"10.1093","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4155-2894","authenticated-orcid":false,"given":"Essi","family":"Hantikainen","sequence":"first","affiliation":[{"name":"Institute for Biomedicine, Eurac Research , Bolzano 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