The CNP Plant-Based, Vegetarian, Vegan, and Mental Health Research Category consolidates research exploring plant-based and vegetarian diets within the field. To view each original study on the open internet, click “Original.” To view the CNP summary of the study, click “CNP Summary.” While a small portion of the studies in this research category is available below for free, the full set of studies (and their summaries) are available to CNP members through the CNP Library Membership.