Balance cholesterol
An aqueous Nigella sativa extract not only exhibited cholesterol-lowering benefits on animal subjects but also had anti-diabetic properties, according to a 2017 study utilizing an animal model. Low dosages of black seed were administered to diabetic animal animals for six weeks, and the levels of total cholesterol, LDL ("bad") cholesterol, and glucose all decreased while HDL ("good") cholesterol rose. Another earlier randomized, double-blind, placebo-controlled experiment used mildly hypertensive human participants. A placebo group, a group that consumed 100 milligrams of black seed twice daily, and a group that consumed 200 milligrams twice daily all participated in the study.
Researchers discovered that after eight weeks of supplementation, those who took the black seed supplement saw a "dose-dependent drop" in both their systolic and diastolic blood pressure. Additionally, both total cholesterol and LDL cholesterol "significantly declined" as a result of the black seed extract treatment. Overall, it seems that black seed may help reduce blood pressure, blood sugar, and cholesterol.