11:45 GMT27 September 2020
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    A new meta-analysis examining the link between the consumption or avoidance of meat and psychological health and well-being has found that a majority of studies observed showed an association between abstention from eating meat and poorer psychological health.

    “Dietary choices have been a powerful indicator of social class and subsequent mate selection (e.g., whom we marry) since antiquity. Consequently, ‘what we eat’ and ‘how we eat’ are integral parts of our identity and directly influence our health via physiological, social, and psychological pathways,” Dr. Urska Dobersek, author of the study and an assistant professor of psychology at the University of Southern Indiana, told PsyPost.

    “Therefore, given the dramatic surge in veganism and mental illness over the past two decades, a rigorous systematic review was a necessary first step in examining the relations between meat and mental health.”

    The systematic review, published in the journal Critical Reviews in Food Science and Nutrition on April 20, included an analysis of 18 studies, with a total of 160,257 participants represented from “multiple geographic regions.” Of the 85,843 women and 73,232 men examined, 149,559 were identified as meat-consumers, and 8,584 were meat-abstainers.

    According to research findings, 11 of the 18 studies showed an association between meat abstention and poorer psychological health. Four of the studies analyzed exhibited an equivocal association, and the remaining three studies showed that those who abstained from meat had better psychological health.

    Researchers contended that their findings show there is “clear evidence” that meat-abstainers tended to have greater rates of depression, self-harm and anxiety than their meat-eating counterparts.

    Dobersek stressed to PsyPost that “correlation does not imply a causal relation” and went on to provide a number of examples to make sense of the findings, such as “individuals struggling with mental illness may alter their diets as a form of self-treatment; vegan and strict vegetarian diets may lead to nutrient deficiencies that increase the risk of mental illness; and many individuals with eating disorders use veganism and vegetarianism as a ‘cover’ to hide their illness.”

    Overall, the analysis did not support the idea that avoiding meat was a good strategy to improve one’s psychological health.


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