Marine Omega‐3 Supplementation and Cardiovascular Disease: An Updated Meta‐Analysis of 13 Randomized Controlled Trials Involving 127 477 Participants

Background Whether marine omega‐3 supplementation is associated with reduction in risk of cardiovascular disease (CVD) remains controversial. Methods and Results This meta‐analysis included study‐level data from 13 trials. The outcomes of interest included myocardial infarction, coronary heart disea...

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Main Authors: Yang Hu, Frank B. Hu, JoAnn E. Manson
Format: Article
Language:English
Published: Wiley 2019-10-01
Series:Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
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Online Access:https://www.ahajournals.org/doi/10.1161/JAHA.119.013543
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author Yang Hu
Frank B. Hu
JoAnn E. Manson
author_facet Yang Hu
Frank B. Hu
JoAnn E. Manson
author_sort Yang Hu
collection DOAJ
description Background Whether marine omega‐3 supplementation is associated with reduction in risk of cardiovascular disease (CVD) remains controversial. Methods and Results This meta‐analysis included study‐level data from 13 trials. The outcomes of interest included myocardial infarction, coronary heart disease (CHD) death, total CHD, total stroke, CVD death, total CVD, and major vascular events. The unadjusted rate ratios were calculated using a fixed‐effect meta‐analysis. A meta‐regression was conducted to estimate the dose–response relationship between marine omega‐3 dosage and risk of each prespecified outcome. During a mean treatment duration of 5.0 years, 3838 myocardial infarctions, 3008 CHD deaths, 8435 total CHD events, 2683 strokes, 5017 CVD deaths, 15 759 total CVD events, and 16 478 major vascular events were documented. In the analysis excluding REDUCE‐IT (Reduction of Cardiovascular Events with Icosapent Ethyl‐Intervention Trial), marine omega‐3 supplementation was associated with significantly lower risk of myocardial infarction (rate ratio [RR] [95% CI]: 0.92 [0.86, 0.99]; P=0.020), CHD death (RR [95% CI]: 0.92 [0.86, 0.98]; P=0.014), total CHD (RR [95% CI]: 0.95 [0.91, 0.99]; P=0.008), CVD death (RR [95% CI]: 0.93 [0.88, 0.99]; P=0.013), and total CVD (RR [95% CI]: 0.97 [0.94, 0.99]; P=0.015). Inverse associations for all outcomes were strengthened after including REDUCE‐IT while introducing statistically significant heterogeneity. Statistically significant linear dose–response relationships were found for total CVD and major vascular events in the analyses with and without including REDUCE‐IT. Conclusions Marine omega‐3 supplementation lowers risk for myocardial infarction, CHD death, total CHD, CVD death, and total CVD, even after exclusion of REDUCE‐IT. Risk reductions appeared to be linearly related to marine omega‐3 dose.
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spelling doaj-art-4fe2df5c4b01434d8887b849dc3368682025-08-20T02:34:10ZengWileyJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease2047-99802019-10-0181910.1161/JAHA.119.013543Marine Omega‐3 Supplementation and Cardiovascular Disease: An Updated Meta‐Analysis of 13 Randomized Controlled Trials Involving 127 477 ParticipantsYang Hu0Frank B. Hu1JoAnn E. Manson2Department of Nutrition Harvard T.H. Chan School of Public Health Boston MADepartment of Nutrition Harvard T.H. Chan School of Public Health Boston MADepartment of Epidemiology Harvard T.H. Chan School of Public Health Boston MABackground Whether marine omega‐3 supplementation is associated with reduction in risk of cardiovascular disease (CVD) remains controversial. Methods and Results This meta‐analysis included study‐level data from 13 trials. The outcomes of interest included myocardial infarction, coronary heart disease (CHD) death, total CHD, total stroke, CVD death, total CVD, and major vascular events. The unadjusted rate ratios were calculated using a fixed‐effect meta‐analysis. A meta‐regression was conducted to estimate the dose–response relationship between marine omega‐3 dosage and risk of each prespecified outcome. During a mean treatment duration of 5.0 years, 3838 myocardial infarctions, 3008 CHD deaths, 8435 total CHD events, 2683 strokes, 5017 CVD deaths, 15 759 total CVD events, and 16 478 major vascular events were documented. In the analysis excluding REDUCE‐IT (Reduction of Cardiovascular Events with Icosapent Ethyl‐Intervention Trial), marine omega‐3 supplementation was associated with significantly lower risk of myocardial infarction (rate ratio [RR] [95% CI]: 0.92 [0.86, 0.99]; P=0.020), CHD death (RR [95% CI]: 0.92 [0.86, 0.98]; P=0.014), total CHD (RR [95% CI]: 0.95 [0.91, 0.99]; P=0.008), CVD death (RR [95% CI]: 0.93 [0.88, 0.99]; P=0.013), and total CVD (RR [95% CI]: 0.97 [0.94, 0.99]; P=0.015). Inverse associations for all outcomes were strengthened after including REDUCE‐IT while introducing statistically significant heterogeneity. Statistically significant linear dose–response relationships were found for total CVD and major vascular events in the analyses with and without including REDUCE‐IT. Conclusions Marine omega‐3 supplementation lowers risk for myocardial infarction, CHD death, total CHD, CVD death, and total CVD, even after exclusion of REDUCE‐IT. Risk reductions appeared to be linearly related to marine omega‐3 dose.https://www.ahajournals.org/doi/10.1161/JAHA.119.013543cardiovascular diseasesfish oilmarine omega‐3 supplementationmeta‐analysisrandomized controlled trials
spellingShingle Yang Hu
Frank B. Hu
JoAnn E. Manson
Marine Omega‐3 Supplementation and Cardiovascular Disease: An Updated Meta‐Analysis of 13 Randomized Controlled Trials Involving 127 477 Participants
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
cardiovascular diseases
fish oil
marine omega‐3 supplementation
meta‐analysis
randomized controlled trials
title Marine Omega‐3 Supplementation and Cardiovascular Disease: An Updated Meta‐Analysis of 13 Randomized Controlled Trials Involving 127 477 Participants
title_full Marine Omega‐3 Supplementation and Cardiovascular Disease: An Updated Meta‐Analysis of 13 Randomized Controlled Trials Involving 127 477 Participants
title_fullStr Marine Omega‐3 Supplementation and Cardiovascular Disease: An Updated Meta‐Analysis of 13 Randomized Controlled Trials Involving 127 477 Participants
title_full_unstemmed Marine Omega‐3 Supplementation and Cardiovascular Disease: An Updated Meta‐Analysis of 13 Randomized Controlled Trials Involving 127 477 Participants
title_short Marine Omega‐3 Supplementation and Cardiovascular Disease: An Updated Meta‐Analysis of 13 Randomized Controlled Trials Involving 127 477 Participants
title_sort marine omega 3 supplementation and cardiovascular disease an updated meta analysis of 13 randomized controlled trials involving 127 477 participants
topic cardiovascular diseases
fish oil
marine omega‐3 supplementation
meta‐analysis
randomized controlled trials
url https://www.ahajournals.org/doi/10.1161/JAHA.119.013543
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AT frankbhu marineomega3supplementationandcardiovasculardiseaseanupdatedmetaanalysisof13randomizedcontrolledtrialsinvolving127477participants
AT joannemanson marineomega3supplementationandcardiovasculardiseaseanupdatedmetaanalysisof13randomizedcontrolledtrialsinvolving127477participants