New Study Finds Fish Oil Benefits Heart Rate Variability in CHD Patients
Abstract
Objective: This study investigates the effects of fish oil supplementation on heart rate variability in patients with coronary heart disease.
Context: Heart rate variability is linked to cardiac mortality. Fish oil has anti-inflammatory effects that may improve autonomic function. However, evidence on heart rate variability is inconclusive.
Methods Used: A double-blind randomized controlled trial was conducted with 120 CHD patients. The treatment group received 3 grams of fish oil daily for 12 weeks. 24-hour heart rate variability was measured at baseline and end of study.
Researchers' Summary of Findings: Fish oil significantly increased SDNN, RMSSD, pNN50, and high frequency power. These metrics indicate improved cardiac autonomic function. No changes occurred in the placebo group.
Health Implications: Fish oil improves heart rate variability in CHD patients, suggesting cardioprotective benefits. Increasing omega-3 intake may help modulate autonomic tone and reduce mortality risk.
DOI: 10.1161/01.CIR.0000118642.28419.F4