Research
Hormonal
Supplemental fish oil (4 g/d providing 1,600 mg EPA and 800 mg DHA) for 6 weeks significantly increases fat-free mass and decreases fat mass in healthy adults.
Take 4 grams of fish oil daily (providing 1,600 mg EPA and 800 mg DHA) for 6 weeks. This specific dose was shown to increase lean mass and decrease fat mass in healthy adults, likely by lowering cortisol levels. Maintain your normal diet and exercise habits.
ModerateSupportsMEDIUM confidence
6 wk of supplementation with FO significantly increased lean mass and decreased fat mass.
Why this rating
Randomized controlled trial with a small sample size (n=44) and short duration (6 weeks).
Source
Effects of supplemental fish oil on resting metabolic rate, body composition, and salivary cortisol in healthy adults
Eric E. Noreen et al. · Journal of the International Society of Sports Nutrition · 2010
DOI 10.1186/1550-2783-7-31
rct · n=44Cited 113×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Fish oil supplementation reduces salivary cortisol levels, and this reduction is significantly correlated with increased fat-free mass and decreased fat mass.Moderate
- Fish oil supplementation does not significantly alter resting metabolic rate (RMR) or respiratory exchange ratio (RER) in healthy adults over 6 weeks.Moderate
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