Dietary consumption of beef and red meat: a scoping review and evidence map on cognitive outcomes across the lifespan

Author:

Paul Tristen LORCID,Fleming Stephen AORCID

Abstract

AbstractObjective:Mixed evidence exists on the impact of beef consumption on cognition. The goal was to create an evidence map capturing studies assessing beef consumption and cognition to reveal gaps and opportunities in the body of literature.Design:A scoping review was conducted to locate studies up to March 2022 using PubMed and backwards citation screening. Data were extracted by two independent reviewers with conflict resolution, and a database was created and made publicly available.Setting:Intervention and observational studies.Participants:Humans of any age, sex and/or health status, without moderate to severe cognitive impairment and/or abnormalities.Results:Twenty-two studies were identified that quantified beef or red meat intake and assessed cognition. Six studies assessed beef intake, with the remaining studies describing intake of red meat that may or may not include beef. Nine articles described randomised controlled trials (RCT), mostly conducted in children. Thirteen described observational studies, primarily conducted on adults and seniors. The most common cognitive domains measured included intelligence and general cognition, and memory. The majority of controlled studies were rated with high risk of bias, with the majority of observational trials rated with serious or greater risk of bias.Conclusions:Red meat and beef intake and cognition is largely understudied. There is a significant lack of replication across study designs, populations, exposures and outcomes measured. The quality of the research would be considerably enhanced by focused assessments of beef intake (and not red meat in general) and specific cognitive domains, along with improved adherence to reporting standards.

Publisher

Cambridge University Press (CUP)

Subject

Public Health, Environmental and Occupational Health,Nutrition and Dietetics,Medicine (miscellaneous)

Reference77 articles.

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