Black seed oil has been studied for its effects on blood-pressure readings. An eight-week trial in healthy adults reported lower measurements compared with placebo.
Study design
Randomised, double-blind, placebo-controlled trial; 70 healthy volunteers aged 34–63; oil, 2.5 mL twice daily; eight weeks.
Reported findings
A 2013 study enrolled 70 healthy adults aged 34–63, with baseline systolic pressure of 110–140 mmHg and diastolic pressure of 60–90 mmHg. After eight weeks, the Nigella oil group had lower systolic and diastolic measurements than the placebo group.
Interpreting the result
Baseline blood pressure was restricted to specified ranges, and the trial involved healthy volunteers. Short-term reductions do not establish long-term cardiovascular protection or effectiveness for severe hypertension. Small trials cannot rule out uncommon adverse effects.
Why this study is useful
The participants were healthy adults with specified starting blood-pressure ranges. The result concerns readings over eight weeks rather than long-term cardiovascular events. Anyone managing blood pressure with medication should keep supplement decisions within their existing care plan.
Source
Fallah Huseini H, Amini M, Mohtashami R, Ghamarchehre ME, Sadeqhi Z, Kianbakht S, Fallah Huseini A. Blood pressure lowering effect of Nigella sativa L. seed oil in healthy volunteers: a randomized, double-blind, placebo-controlled clinical trial. (2013).
Read the published study · Publisher / DOI
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