Psoriasis
Can fish oil improve psoriasis severity?
Fish oil alone has not shown a clear severity benefit in pooled trials. Reviews suggest possible adjunctive effects with conventional treatment, but those findings do not establish stand-alone efficacy.
Updated September 24, 2026 · Editorial attribution: PV Griscom, M.Sc. · Independent clinical review pending
The question behind the headline
People with psoriasis; fish oil alone or added to standard treatment.
What the finding does—and doesn’t—tell us
Oral, topical and intravenous interventions should not be combined into one consumer-supplement claim.
Read the underlying research.
- Effects of fish oil supplement on psoriasis: a meta-analysis of randomized controlled trials. · 2019 ↗
- Efficacy of fish oil and its components in the management of psoriasis: a systematic review of 18 randomized controlled trials. · 2020 ↗
Selected sources, not an exhaustive reference list. Rating draws on published results and review summaries; no independent full systematic review has been conducted. Source publication dates may precede this page’s update date.
Three questions to take forward
- Was the study population similar to the person or situation I have in mind?
- Did it measure an outcome people feel or experience, or only a laboratory marker?
- How do formulation, usual care, absolute benefit and adverse effects change the interpretation?
Study doses describe experiments; they are not personal dosing advice. Explore safety and limitations ↗