Omega-3

Does it work?

• -A little, and mostly for general health. EPA/DHA reliably nudge down post-exercise soreness and inflammation markers — but the effect on soreness is too small to actually feel, and it won't build muscle or boost performance on its own. The stronger case is cardiovascular and brain health, plus topping up a low intake if you rarely eat oily fish.

How much · when

• -2-3 g combined EPA+DHA per day — check the label for the actual EPA+DHA numbers, not the total fish oil weight (a '1000 mg' capsule is often only ~300 mg EPA+DHA).
• -Take with a meal that contains fat; it absorbs better and causes fewer fishy burps.
• -It's a daily habit, not a pre-workout — benefits come from weeks of consistent intake, so timing around training doesn't matter.
• -If you already eat oily fish (salmon, sardines, mackerel) two-plus times a week, you likely don't need a supplement at all.

The catch

• -The soreness reduction is statistically real but lands below the threshold you'd actually notice — a meta-analysis put it under the minimal clinically important difference.
• -It doesn't increase strength, muscle, or performance by itself; any strength signal is small, slow, and dose-dependent.
• -Lower-omega-3 markers don't equal real-world recovery — most trials show better blood markers without better outcomes you can feel.

Safety

• -Generally well tolerated; common side effects are fishy aftertaste, burps, and mild GI upset, reduced by taking with food or using enteric-coated capsules.
• -High doses (around 4 g/day or more) modestly raise atrial fibrillation risk in some trials — stay near 2-3 g unless a doctor directs otherwise.
• -If you take blood thinners or have a bleeding disorder, check with your doctor first, as high doses can mildly affect clotting.
• -Choose a third-party-tested product (IFOS, NSF) to limit oxidation and contaminant concerns.

Key research

• International Society of Sports Nutrition Position Stand: Long-Chain Omega-3 Polyunsaturated Fatty AcidsJ Int Soc Sports Nutr · 2025 · Position stand
• Omega-3 fatty acids for the primary and secondary prevention of cardiovascular diseaseCochrane Database Syst Rev · 2018 · Meta-analysis
• The effects of omega-3 polyunsaturated fatty acids on muscle and whole-body protein synthesis: a systematic review and meta-analysisNutrition Reviews · 2024 · Meta-analysis
• Effect of omega-3 fatty acids supplementation on indirect blood markers of exercise-induced muscle damage: Systematic review and meta-analysis of randomized controlled trialsFood Science & Nutrition · 2021 · Meta-analysis

Related