Black seed oil is being explored across several aspects of metabolic health. An eight-week trial measured glucose control, lipids, blood pressure and body measurements.
Study design
Randomised, double-blind, placebo-controlled trial; 43 adults with type 2 diabetes; oil-extract capsules versus sunflower-oil placebo; eight weeks.
Reported findings
A 2021 placebo-controlled trial studied 43 adults with type 2 diabetes for eight weeks. The oil-extract group showed improvements in HbA1c, fasting glucose, several lipid measures, blood pressure and waist circumference. HDL and the HOMA-IR insulin-resistance measure did not change significantly.
Interpreting the result
The sample was small and the study was short. Several markers improved, but not all. These findings do not provide a basis for changing diabetes medication or establish long-term complication prevention.
Why this study is useful
Metabolic research looks at connected measurements such as blood glucose, lipids and waist circumference. Studying several of them together can reveal a broader pattern, provided positive and unchanged results are reported side by side. This trial is one reason black seed oil continues to attract research attention.
Source
Hadi S, Daryabeygi-Khotbehsara R, Mirmiran P, McVicar J, Hadi V, Soleimani D, Askari G. Effect of Nigella sativa oil extract on cardiometabolic risk factors in type 2 diabetes: A randomized, double-blind, placebo-controlled clinical trial. (2021).
Read the published study · Publisher / DOI
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