The Study
The Role of Omega-3 Polyunsaturated Fatty Acids on Sarcopenia and Aging Muscle
This study didn't do its own experiments — it looked at lots of other studies and tried to put the pieces together. It says omega-3s might help muscles in older people, but it can't prove they cause the improvement because some studies were weak or mixed with exercise.
Analysis score
Maximum 5 for a narrative review.
Where the score came from
This study looked at whether taking fish oil pills helps older adults keep their muscles strong as they age.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 52 / 100
Quality score
Systematic reviews and meta-analyses of cohort studies. They sit above a single cohort study but below a single randomized trial, because the underlying evidence is still observational.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — this means fish oil could help older people walk better, avoid falls, and stay independent, but only if they take enough and combine it with lifting weights.
- 2Taking more than 2 grams of fish oil daily for 6 months increased thigh muscle by 3.6% and boosted leg strength by up to 20% more than exercise alone — especially in women.
- 3Taking less than 1 gram daily for 3 years did nothing.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
International Journal of Environmental Research and Public Health
Year
2026
Authors
Behzad Varamini, Jonah O. Yang, Be Merry, Daniel J. Dau
Related Content
Claims (10)
Taking fish oil supplements containing EPA and DHA may lead to very small or negligible gains in muscle size and strength for most people, and these changes are not large enough to be meaningful in a clinical or practical sense.
Taking omega-3 supplements along with leg workouts helps older women get stronger in their legs more than just doing leg workouts alone — it’s like the supplements make the exercise work better.
Taking omega-3 supplements might help lower inflammation in older people, especially if they also exercise, which could help them keep their muscles stronger as they age.
Taking omega-3 supplements might help prevent muscle loss when you're stuck in bed or not moving much, like after an injury, by keeping your muscles from breaking down too fast.
When older women take omega-3 supplements and do strength training, they tend to get stronger and move better than older men doing the same thing — suggesting men and women’s bodies respond differently to these supplements.
Eating lots of omega-3 fatty acids, like those found in fish oil, may help your body hold onto muscle when you're eating fewer calories, like during a diet.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.