Black seed oil’s relationship with inflammation has been studied in people as well as laboratories. A rheumatoid-arthritis trial examined changes in specific inflammatory markers.
Study design
Randomised, double-blind, placebo-controlled trial; 42 participants with rheumatoid arthritis; oil capsules, 500 mg twice daily; eight weeks.
Reported findings
In a 2016 trial, 42 people with rheumatoid arthritis received Nigella oil capsules or placebo for eight weeks. The authors reported changes in selected inflammatory and oxidative-stress markers. Not every marker showed a significant response.
Interpreting the result
The study focused on biomarkers over a short period. Within-group changes must not be confused with between-group treatment effects. Results were not uniformly positive across the measured markers and do not establish reduced structural joint damage.
Why this study is useful
Inflammation research uses several different markers. This trial’s results varied across them, and some comparisons were with baseline rather than directly with placebo. Naming the markers keeps the evidence more informative than a broad anti-inflammatory label.
Source
Hadi V, Kheirouri S, Alizadeh M, Khabbazi A, Hosseini H. Effects of Nigella sativa oil extract on inflammatory cytokine response and oxidative stress status in patients with rheumatoid arthritis: a randomized, double-blind, placebo-controlled clinical trial. (2016).
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