Most replayed moment: Omega-3: heart health hero or overhyped? | Dr. Bill Harris and Professor Sarah Berry

Omega-3 fatty acids, specifically EPA and DHA, function as bioactive compounds that enhance cell membrane flexibility, facilitating efficient nutrient intake and waste removal. While not strictly essential for survival, these fatty acids contribute significantly to cardiovascular health by thinning blood, reducing heart rate, and improving vascular elasticity. Contrary to common misconceptions, fish oils primarily lower triglycerides rather than cholesterol. Although high-dose pharmaceutical supplementation—exceeding three grams daily—may correlate with a slight increase in atrial fibrillation risk, standard dietary intake and moderate supplementation remain safe. Optimal dietary sources are best remembered through the SMASH acronym: salmon, mackerel, anchovies, sardines, and herring. For those avoiding animal products, microalgae-derived supplements offer a direct, effective source of EPA and DHA. Dr. Bill Harris and Professor Sarah Berry provide this evidence-based perspective to clarify the role of Omega-3s in long-term health.