We all know the heart-healthy staples: vegetables, low-fat dairy, and lean protein like fish. Fatty fish like salmon boast an extra benefit – omega-3 fatty acids, thought to improve good cholesterol and lower triglycerides. But recent research suggests a more nuanced picture for fish oil supplements and heart disease prevention.
A new study in BMJ throws a curveball. While fish oil has been linked to positive outcomes for those already with heart disease, the study found that people with no existing heart problems who took regular fish oil supplements actually saw an increased risk of atrial fibrillation (irregular heartbeat) by 13% and stroke by 5%.
This doesn’t necessarily mean fish itself is bad. However, for those without a history of heart disease, fish oil supplements might not offer the same preventive benefits we previously thought.