Marine fatty acids altered inflammatory markers during a calorie-restricted diet
In adults with obesity, a randomized trial found changes in an immune-cell receptor and inflammatory markers, without establishing longer-term clinical benefits.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
The trial reported increased activation of an inflammation-related receptor after marine fatty acid supplementation, alongside changes in inflammatory markers. Both groups also followed a calorie-restricted diet and improved in body composition and biochemical measures. The abstract does not show that the receptor changes led to better symptoms, fewer illnesses or lasting metabolic benefits.
The abstract gives no numerical effect sizes and does not clearly identify the comparator for every marker change. Shared calorie restriction also means improvements seen in both groups cannot be attributed specifically to marine supplements.
What the researchers investigated
The main question concerned receptor activation and inflammation in peripheral blood mononuclear cells. These laboratory outcomes describe a biological response; the abstract does not report whether changing them improved participants' health or daily functioning.
Diet was part of both regimens
Both groups received fatty acid supplements while following progressively tighter calorie limits. Body composition and biochemical measures improved in both groups, so those shared changes do not demonstrate an added benefit from the marine supplement.
The original publication
Marine ω-3 PUFA Supplementation Enhances FFAR4 Activation and Reduces Inflammatory Markers in PBMC of Subjects with Obesity: A Randomized Controlled Trial (EPICO).
Reyes-Pérez SD, Cambron-Mora D, Torres-Vanegas J et al.
Nutrients · 2025
- PubMed ID
- 41373925
- Record checked
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