Black Seed Oil for High Cholesterol
Clinical trials show modest cholesterol-lowering effects. Here are the details.
Key takeaways
- A meta-analysis of placebo-controlled trials found black seed lowered total cholesterol, LDL and triglycerides.
- Seed powder appeared to have more effect on HDL; oil had a stronger effect on triglycerides.
- Effects are smaller than statins — don't stop prescribed medicine.
What the research says
A meta-analysis of 17 randomised placebo-controlled trials found Nigella sativa significantly reduced total cholesterol, LDL cholesterol and triglycerides.[1] A separate review in type 2 diabetes found similar lipid improvements.[2]
How much was used?
Most studies used 1–2 grams of seed powder or around 1–5 ml of oil daily for 4–12 weeks.
Black seed oil vs statins
Statins lower LDL much more and prevent heart attacks and strokes. Black seed oil may be a modest add-on, but it's not a replacement.
Other ways to lower cholesterol
- More soluble fibre (oats, beans)
- Less saturated fat
- Regular exercise
- Not smoking
When to see a doctor
Black seed oil and oregano oil are not a substitute for diagnosis or prescribed treatment. See a healthcare professional if symptoms are severe, getting worse or not improving.
Frequently asked questions
How long does black seed oil take to lower cholesterol?
Studies typically saw changes after 4–12 weeks of daily use.
The bottom line
Black seed oil may modestly improve cholesterol levels. It works best as part of a heart-healthy lifestyle and alongside prescribed treatment.
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Sources
- Sahebkar A, Beccuti G, Simental-Mendía LE, et al. Nigella sativa (black seed) effects on plasma lipid concentrations in humans: a systematic review and meta-analysis of randomized placebo-controlled trials. Pharmacol Res. 2016;106:37-50.
- Daryabeygi-Khotbehsara R, Golzarand M, Ghaffari MP, Djafarian K. Nigella sativa improves glucose homeostasis and serum lipids in type 2 diabetes: a systematic review and meta-analysis. Complement Ther Med. 2017;35:6-13.
