Effect of Omega-3 Polyunsaturated Fatty Acids on Cardiovascular Outcomes in Patients with Diabetes: A Meta-analysis of Randomized Controlled Trials

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#humans #dietary-supplements #randomized-controlled-trials-as-topic #fatty-acids-omega-3 #eicosapentaenoic-acid

Effect of Omega-3 Polyunsaturated Fatty Acids on Cardiovascular Outcomes in Patients with Diabetes: A Meta-analysis of Randomized Controlled Trials

Huang et al., 2023 | Adv Nutr | Meta Analysis

Citation

Huang Linlin, Zhang Fanjie, ... Long Yang. Effect of Omega-3 Polyunsaturated Fatty Acids on Cardiovascular Outcomes in Patients with Diabetes: A Meta-analysis of Randomized Controlled Trials. Adv Nutr. 2023-Jul;14(4):629-636. doi:10.1016/j.advnut.2023.04.009

Abstract

The current guidelines recommend that people consume 2 or more servings of fat-rich fish per week to obtain enough omega-3 (ω-3) polyunsaturated fatty acids to prevent cardiovascular events. However, the cardiovascular benefits of ω-3 polyunsaturated fatty acids in patients with diabetes are unclear, and related large-scale trials have produced conflicting results. We aimed to perform a meta-analysis of all randomized controlled trials that attempted to assess the effects of ω-3 fatty acid supplementation on cardiovascular outcomes in patients with diabetes. In PubMed, EMBASE, and the Cochrane Library, we searched for data from all randomized controlled trials on ω-3 fatty acids and cardiovascular outcomes in patients with diabetes published before July 2022. Eight eligible studies involving 57,754 participants were ultimately included. Meta-analysis showed that ω-3 fatty acid supplementation reduces cardiovascular disease (CVD) risk in patients with diabetes (rate ration [RR] = 0.93; 95% confidence interval [CI]: 0.90, 0.97; P = 0.0009). Among them, eicosapentaenoic acid (EPA), but not EPA plus docosahexaenoic acid (DHA), significantly reduced the risk of CVD in patients with diabetes (EPA [RR = 0.81; 95% CI: 0.73, 0.90; P=0.0001]). This meta-analysis suggests that ω-3 fatty acid supplementation is an effective strategy to prevent CVD in patients with diabetes, but further well-designed, large-scale randomized controlled trials are necessary to evaluate the safety of ω-3 fatty acid supplementation, and its effect on atrial fibrillation. This study was registered with PROSPERO as CRD42022346302.

Key Findings

This study was registered with PROSPERO as CRD42022346302.

Outcomes Measured

  • Requires manual extraction

Population

Field Value
Population diabetes are unclear
Sample Size 57754
Age Range See abstract
Condition diabetes

MeSH Terms

  • Humans
  • Dietary Supplements
  • Randomized Controlled Trials as Topic
  • Fatty Acids, Omega-3
  • Eicosapentaenoic Acid
  • Docosahexaenoic Acids
  • Diabetes Mellitus
  • Cardiovascular Diseases

Evidence Classification

  • Level: Meta Analysis
  • Publication Types: Meta-Analysis, Journal Article, Review, Research Support, Non-U.S. Gov't
  • Vertical: omega-3

Provenance

Source extracted via PubMed E-utilities API on 2026-04-09