Research
Hormonal
Omega-3 fatty acid supplementation does not enhance muscle protein synthesis in young men who are already consuming adequate protein and performing resistance exercise.
If you are a young man who eats enough protein and lifts weights, adding high-dose omega-3s (5g/day) likely won't give you extra muscle protein synthesis benefits beyond what you're already getting.
ModerateRefutesMEDIUM confidence
One study by McGlory et al. (44) failed to show any measurable effect of 8 weeks of 5 g/d EPA and DHA feeding on changes in myofibrillar MPS following either ingestion of 30 g protein or when protein feeding was combined with a bout of unilateral resistance exercise in young men.
Why this rating
Based on a single study in young men.
Source
The Influence of Omega-3 Fatty Acids on Skeletal Muscle Protein Turnover in Health, Disuse, and Disease
Chris McGlory et al. · Frontiers in Nutrition · 2019
DOI 10.3389/fnut.2019.00144
narrative_reviewCited 209×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Omega-3 fatty acid supplementation (EPA/DHA) potentiates muscle protein synthesis and increases lean mass/strength in older adults, particularly when baseline protein intake is suboptimal.Good
- Omega-3 fatty acid supplementation attenuates muscle loss and accelerates recovery during periods of muscle disuse (immobilization) in young women.Moderate
Related findings · Hormonal
- Initial treatment for type 2 diabetes should be a combination of metformin and either an SGLT-2 inhibitor or a GLP-1 receptor agonist to achieve cardiorenal protection, rather than monotherapy or older agents like sulfonylureas.Strong
- For patients with specific monogenic obesity syndromes (leptin deficiency, POMC/PCSK1/LEPR mutations), targeted pharmacotherapy (recombinant leptin or setmelanotide) is highly effective and should be prioritized, unlike in polygenic obesity.Strong
- Continued weekly administration of 2.4 mg subcutaneous semaglutide prevents weight regain and promotes further weight loss in adults with overweight or obesity, whereas switching to placebo results in significant weight regain.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →