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A rapid review of meta-analyses and systematic reviews of environmental footprints of food commodities and diets
Stockholm University, Sweden; WorldFish Organization, Malaysia; Royal Swedish Academy of Science, Sweden.
Leiden University, Netherlands.
Leiden University, Netherlands.
Leiden University, Netherlands; Vrije Universiteit Amsterdam, Netherlands.
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2021 (English)In: Global Food Security, ISSN 2211-9124, Vol. 28, article id 100508Article in journal (Refereed) Published
Abstract [en]

Systematic reviews, sometimes including meta-analyses, are often presented as an approach for identifying healthy and sustainable diets. Here we explore to which extent systematic review protocols have been adopted by studies comparing environmental impacts of foods based on Life Cycle Assessment (LCA) results, and to which extent they comply with the PRISMA protocol for transparent reporting. Out of 224 studies screened, seven explicitly define themselves as systematic reviews, and/or claim to carry out meta-analyses. Of these, only one acknowledges a review protocol, while none complies with all the PRISMA criteria. Neither do we believe that reviews of LCA results can comply with all the criteria or carry out meta-analyses, due to underreporting on standard deviations and artificial sample sizes in LCAs. Nonetheless, reviews of food commodities and diets based on LCA results would benefit from better aligning with criteria in systematic review protocols. 

Place, publisher, year, edition, pages
Elsevier B.V. , 2021. Vol. 28, article id 100508
Keywords [en]
Diets, Footprint, Life cycle assessment, Meta-analysis, Systematic review
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-52515DOI: 10.1016/j.gfs.2021.100508Scopus ID: 2-s2.0-85100887120OAI: oai:DiVA.org:ri-52515DiVA, id: diva2:1538258
Note

 Funding details: 00454; Funding details: Svenska Forskningsrådet Formas, 2016–00227; Funding details: Consortium of International Agricultural Research Centers, CGIAR; Funding text 1: This work was funded by FORMAS SeaWin project (2016–00227) and undertaken as part of the CGIAR Research Programs on Fish Agri-Food Systems (FISH) led by WorldFish and on Climate Change, Agriculture, and Food Security (CCAFS). These programs are supported by contributors to the CGIAR Trust Fund. PH was also co-funded by FORMAS Inequality and the Biosphere project (2020–00454).; Funding text 2: This work was funded by FORMAS SeaWin project (2016?00227) and undertaken as part of the CGIAR Research Programs on Fish Agri-Food Systems (FISH) led by WorldFish and on Climate Change, Agriculture, and Food Security (CCAFS). These programs are supported by contributors to the CGIAR Trust Fund. PH was also co-funded by FORMAS Inequality and the Biosphere project (2020?00454).

Available from: 2021-03-18 Created: 2021-03-18 Last updated: 2023-05-17Bibliographically approved

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Ziegler, Friederike

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