Project description:This concerns a cross-sectional cohort study of 356 Dutch community-dwelling older adults to study the association of the oral microbiota with poor taste, poor smell, poor appetite and undernutrition. Data-collection consisted of body measurements (incl. body weight, height, and body impedance analysis), extensive appetite and food frequency questionnaires, taste and smell tests, and a tongue swab. The oral microbiota composition was assessed with 16S rRNA sequencing.