Nancy Dess: Occidental College

In a 2002 BEC talk, I described the working hypothesis that bittersweet taste is a marker for sensitivity to metabolic equanimity, manifested in ways ranging from responsiveness to energy balance to emotional reactivity and stress vulnerability; data from rats selectively bred on a saccharin phenotype and, to a lesser extent, humans, were presented in support of the hypothesis.  This talk provides an update on our research program, including social behavior and evidence of an association between the taste phenotype and the gut microbiome.  I will draw on others’ recent research with nonhuman primates (taste polymorphisms and behavioral ecology) and humans (embodied cognition) to advocate for refinement and testing of multilevel integrative models that link individual-level taste to processes at lower (gut-brain axis) and higher (sociality, culture) levels of organization.