Vegetarianism and veganism compared with mental health and cognitive outcomes: a systematic review and meta-analysis

Context Vegetarian and vegan diets are increasing in popularity. Although they provide beneficial health effects, they may also lead to nutritional deficiencies. Cognitive impairment and mental health disorders have a high economic burden. Objective A meta-analysis was conducted to examine the relationship between vegan or vegetarian diets and cognitive and mental health. Data Sources PubMed, Scopus, ScienceDirect, and Proquest databases were...