Lukas Schwingshackl1, Jasmin Zähringer1, Jessica Beyerbach1, Sarah S Werner1, Helmut Heseker2, Berthold Koletzko3, Joerg J Meerpohl1,4. 1. Institute for Evidence in Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany. 2. Department of Sports and Health, Paderborn University, Paderborn, Germany. 3. Division of Metabolic and Nutritional Medicine, Department Paediatrics, Dr. von Hauner Children's Hospital, University of Munich Medical Center, LMU - Ludwig-Maximilians-Universität Munich, Munich, Germany. 4. Cochrane Germany, Cochrane Germany Foundation, Freiburg, Germany.
Abstract
INTRODUCTION: We conducted a scoping review of systematic reviews (SRs) on dietary fat intake and health outcomes in human adults within the context of a position paper by the "International Union of Nutritional Sciences Task force on Dietary Fat Quality" tasked to summarize the available evidence and provide dietary recommendations. METHODS: We systematically searched several databases for relevant SRs of randomized controlled trials (RCTs) and/or prospective cohort studies published between 2015 and 2019 assessing the association between dietary fat and health outcomes. RESULTS: Fifty-nine SRs were included. The findings from SRs of prospective cohort studies, which frequently compare the highest versus lowest intake categories, found mainly no association of total fat, monounsaturated fatty acid (MUFA), polyunsaturated fatty acid (PUFA), and saturated fatty acid (SFA) with risk of chronic diseases. SRs of RCTs applying substitution analyses indicate that SFA replacement with PUFA and/or MUFA improves blood lipids and glycemic control, with the effect of PUFA being more pronounced. A higher intake of total trans-fatty acid (TFA), but not ruminant TFA, was probably associated with an increased risk of mortality and cardiovascular disease based on existing SRs. CONCLUSION: Overall, the available published evidence deems it reasonable to recommend replacement of SFA with MUFA and PUFA and avoidance of consumption of industrial TFA.
INTRODUCTION: We conducted a scoping review of systematic reviews (SRs) on dietary fat intake and health outcomes in human adults within the context of a position paper by the "International Union of Nutritional Sciences Task force on Dietary Fat Quality" tasked to summarize the available evidence and provide dietary recommendations. METHODS: We systematically searched several databases for relevant SRs of randomized controlled trials (RCTs) and/or prospective cohort studies published between 2015 and 2019 assessing the association between dietary fat and health outcomes. RESULTS: Fifty-nine SRs were included. The findings from SRs of prospective cohort studies, which frequently compare the highest versus lowest intake categories, found mainly no association of total fat, monounsaturated fatty acid (MUFA), polyunsaturated fatty acid (PUFA), and saturated fatty acid (SFA) with risk of chronic diseases. SRs of RCTs applying substitution analyses indicate that SFA replacement with PUFA and/or MUFA improves blood lipids and glycemic control, with the effect of PUFA being more pronounced. A higher intake of total trans-fatty acid (TFA), but not ruminant TFA, was probably associated with an increased risk of mortality and cardiovascular disease based on existing SRs. CONCLUSION: Overall, the available published evidence deems it reasonable to recommend replacement of SFA with MUFA and PUFA and avoidance of consumption of industrial TFA.
Authors: Ana Isabel Rodríguez-Guerra; Nancy López-Olmedo; Catalina Medina; César Hernández-Alcaraz; Ana G Ortega-Avila; Simón Barquera Journal: Front Public Health Date: 2022-08-05
Authors: Lyndal Wellard-Cole; Alyse Davies; Juliana Chen; Jisu Jung; Kim B Bente; Judy Kay; Wendy L Watson; Clare Hughes; Anna Rangan; Kalina Yacef; Irena Koprinska; Kathy Chapman; Nim Ting Wong; Luke Gemming; Cliona Ni Mhurchu; Adrian Bauman; Margaret Allman-Farinelli Journal: Nutrients Date: 2021-05-21 Impact factor: 5.717