The vegetable divide: Americans' knowledge of dietary guidelines and willingness to make healthy changes.

We aimed to (a) better understand Americans' awareness and attitudes towards the Dietary Guidelines for Americans (DGA) from 2005-2015; (b) identify how the public obtains that knowledge, (c) measure their willingness to make healthy changes; and (d) identify important contextual factors that impact knowledge of DGA and nutrition. Quantitative survey data from nationally-representative online panel samples indicate the already low awareness of DGA declined over the last decade. This study fills a gap in the literature and can help guide communication strategies employed by the DGA governing bodies (USDA and HHS), including a consistent brand image incorporating updates over time.