Why Fish Oil Supplements Can Be Dangerous for the Heart.

This article focuses on recent research regarding the effects of omega-3 fish oil supplements on heart health. A large observational study using data from the UK Biobank found that people without prior heart disease who regularly took fish oil supplements had a 13% higher risk of atrial fibrillation and a 5% greater risk of stroke, while those with existing heart disease experienced a 15% lower risk of severe heart events. Experts note that the study’s observational design, lack of dosage information, and variability in supplement types limit definitive conclusions, and randomized controlled trials suggest that lower doses (1g/day or less) do not significantly increase atrial fibrillation risk. The American Heart Association does not recommend fish oil supplements for heart disease prevention in healthy individuals, advising instead a balanced diet including fish consumption, exercise, and other healthy lifestyle practices.