Effects of canola oil on body weight and composition in adults: an updated systematic review and meta-analysis of 32 randomized controlled trials

Abstract Objective We aim to provide an overview and update the current documents regarding the effect of canola oil (CO) compared to other dietary oils on body weight and composition in adults. Methods PubMed, Scopus, Google Scholar, and ISI Web of Science were searched until Sepetember 2024 for ra...

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Main Authors: Abbas Mohtashamian, Masoumeh Mahabady, Fatemeh Bagheri, Hanieh Barghchi, Azadeh Aminianfar
Format: Article
Language:English
Published: BMC 2025-04-01
Series:Nutrition Journal
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Online Access:https://doi.org/10.1186/s12937-025-01117-5
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author Abbas Mohtashamian
Masoumeh Mahabady
Fatemeh Bagheri
Hanieh Barghchi
Azadeh Aminianfar
author_facet Abbas Mohtashamian
Masoumeh Mahabady
Fatemeh Bagheri
Hanieh Barghchi
Azadeh Aminianfar
author_sort Abbas Mohtashamian
collection DOAJ
description Abstract Objective We aim to provide an overview and update the current documents regarding the effect of canola oil (CO) compared to other dietary oils on body weight and composition in adults. Methods PubMed, Scopus, Google Scholar, and ISI Web of Science were searched until Sepetember 2024 for randomized clinical trials (RCTs) that assessed the effect of CO on anthropometric measures. Results In this systematic review and meta-analysis thirty-two studies were included. CO consumption significantly increased WHR (MD: 0.003 cm, 95% CI: 0.001, 0.005, P value: 0.003) and significantly decreased BMI (mean difference (MD): -0.127 kg/m2, 95% C: -0.231, -0.024, P value: 0.016) However, it did not significantly affect other anthropometric measures (P > 0.05). Based on subgroup analysis, CO supplementation significantly reduced BW in studies on T2DM patients, with parallel design, on patients over 50 years old and with a dose of more than 30 g/d. It also significantly increased WC in trials with parallel design and on hyperlipidemia patients. In addition, CO supplementation significantly increased WHR in the majority of subgroups. Conclusions Compared to other oil supplementation, CO could decrease BW, BMI and increase WHR, and WC in general or subgroup analysis. Further studies are needed to provide additional insight into how canola oil affects BW and composition in adults.
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spelling doaj-art-981b0dda80c74703a7dc49ca59b2defd2025-08-20T03:10:14ZengBMCNutrition Journal1475-28912025-04-0124112910.1186/s12937-025-01117-5Effects of canola oil on body weight and composition in adults: an updated systematic review and meta-analysis of 32 randomized controlled trialsAbbas Mohtashamian0Masoumeh Mahabady1Fatemeh Bagheri2Hanieh Barghchi3Azadeh Aminianfar4Research Center for Biochemistry and Nutrition in Metabolic Diseases, Basic Science Research Institute, Kashan University of Medical SciencesResearch Center for Biochemistry and Nutrition in Metabolic Diseases, Basic Science Research Institute, Kashan University of Medical SciencesResearch Center for Biochemistry and Nutrition in Metabolic Diseases, Basic Science Research Institute, Kashan University of Medical SciencesDepartment of Clinical Nutrition, Faculty of Medicine, Mashhad University of Medical SciencesResearch Center for Biochemistry and Nutrition in Metabolic Diseases, Basic Science Research Institute, Kashan University of Medical SciencesAbstract Objective We aim to provide an overview and update the current documents regarding the effect of canola oil (CO) compared to other dietary oils on body weight and composition in adults. Methods PubMed, Scopus, Google Scholar, and ISI Web of Science were searched until Sepetember 2024 for randomized clinical trials (RCTs) that assessed the effect of CO on anthropometric measures. Results In this systematic review and meta-analysis thirty-two studies were included. CO consumption significantly increased WHR (MD: 0.003 cm, 95% CI: 0.001, 0.005, P value: 0.003) and significantly decreased BMI (mean difference (MD): -0.127 kg/m2, 95% C: -0.231, -0.024, P value: 0.016) However, it did not significantly affect other anthropometric measures (P > 0.05). Based on subgroup analysis, CO supplementation significantly reduced BW in studies on T2DM patients, with parallel design, on patients over 50 years old and with a dose of more than 30 g/d. It also significantly increased WC in trials with parallel design and on hyperlipidemia patients. In addition, CO supplementation significantly increased WHR in the majority of subgroups. Conclusions Compared to other oil supplementation, CO could decrease BW, BMI and increase WHR, and WC in general or subgroup analysis. Further studies are needed to provide additional insight into how canola oil affects BW and composition in adults.https://doi.org/10.1186/s12937-025-01117-5Canola oilWeightBody compositionRandomized clinical trialsSystematic reviewMeta-analysis
spellingShingle Abbas Mohtashamian
Masoumeh Mahabady
Fatemeh Bagheri
Hanieh Barghchi
Azadeh Aminianfar
Effects of canola oil on body weight and composition in adults: an updated systematic review and meta-analysis of 32 randomized controlled trials
Nutrition Journal
Canola oil
Weight
Body composition
Randomized clinical trials
Systematic review
Meta-analysis
title Effects of canola oil on body weight and composition in adults: an updated systematic review and meta-analysis of 32 randomized controlled trials
title_full Effects of canola oil on body weight and composition in adults: an updated systematic review and meta-analysis of 32 randomized controlled trials
title_fullStr Effects of canola oil on body weight and composition in adults: an updated systematic review and meta-analysis of 32 randomized controlled trials
title_full_unstemmed Effects of canola oil on body weight and composition in adults: an updated systematic review and meta-analysis of 32 randomized controlled trials
title_short Effects of canola oil on body weight and composition in adults: an updated systematic review and meta-analysis of 32 randomized controlled trials
title_sort effects of canola oil on body weight and composition in adults an updated systematic review and meta analysis of 32 randomized controlled trials
topic Canola oil
Weight
Body composition
Randomized clinical trials
Systematic review
Meta-analysis
url https://doi.org/10.1186/s12937-025-01117-5
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