Study
Omega-3 fatty acids and tear cytokines modulation in dry eye patients with low omega-3 index. Have the beneficiaries been pinpointed?
In 102 dry-eye patients with a low omega-3 index, 6 months of omega-3 supplementation lowered tear inflammatory cytokines.
Summary Can omega-3 supplements reduce eye inflammation in people with dry eye? Show / hide ↓
Researchers randomly assigned 102 people with dry eye and a low omega-3 index, meaning low levels of omega-3 fats in their blood, to receive omega-3 capsules or an olive-oil placebo, a dummy treatment. They took the capsules twice daily for six months. The researchers measured cytokines, which are chemical signals linked to inflammation, in participants’ tears, along with symptoms and other measures of eye health. The report says omega-3 supplements reduced some tear inflammatory signals, but the available results do not show the exact changes or whether symptoms improved.
What this means for you: This provides limited evidence that omega-3 supplements may reduce eye inflammation in people who already have low omega-3 levels. It is not enough to justify buying supplements for everyone with dry eye, especially because the detailed results are missing.
early evidenceInvestigators randomised 102 people with dry eye and an omega-3 index below 4%. Participants received omega-3 capsules or olive-oil placebo twice daily for six months. Each omega-3 capsule contained 325 mg eicosapentaenoic acid and 175 mg docosahexaenoic acid; participants took four capsules at each dosing time. The primary endpoint was tear cytokines, including IL-1beta, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IFN-gamma and TNF-alpha. Secondary assessments included symptoms, Nelson grade, goblet-cell density, Schirmer test values and tear-film breakup time. At baseline, impression cytology found raised IL-1beta, IL-6, IL-8 and TNF-alpha mRNA in both groups, with no between-group difference stated (p=0.123). The supplied abstract text is truncated in the results section, so it does not provide the specific cytokine changes, their p-values, or the secondary-outcome results. Its conclusion states that supplementation decreased tear inflammatory cytokines in this selected dry-eye population. That is a local biomarker result, not evidence of a systemic longevity effect. The low baseline omega-3 index also limits how directly this result applies to people with adequate omega-3 status.
Omega-3 fatty acid supplementation decreased tear inflammatory cytokines in dry-eye patients with an omega-3 index below 4%.
The endpoint was tear cytokines, a surrogate marker, in patients with dry eye and low omega-3 status. The supplied results text is incomplete, so its numerical effect estimates and secondary outcomes cannot be assessed here.
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