Olive Leaf Extract May Help Lower Blood Pressure, Cholesterol
Cardiovascular disease is the leading cause of death in the United States and high blood pressure is one of the contributing factors. A recent study suggests that taking a daily supplement of polyphenol-rich olive leaf extract may help improve blood pressure and lower cholesterol levels in people who are at risk of high blood pressure.
Participants in the study included 60 pre-hypertensive men who had systolic blood pressure levels between 121 and 140 mmHg and diastolic blood pressure levels between 81 and 90 mmHg. Every day for six weeks, they were given either an olive leaf extract containing 136 mg oleuropein and 6 mg hydroxxytyrosol or a placebo. The intervention was followed by a four-week washout period, after which the men switched interventions for another six weeks.
At the conclusion of the study, the researchers noted a 3.33 mmHg 24-hour reduction and a 3.95 mmHg day time value reduction in systolic blood pressure in the olive leaf extract group. They also noted a 2.42 mmHg 24-hour reduction and a 3.00 mmHg day time reduction in diastolic blood pressure. Additionally, they noted a 0.32 mmol/L decrease in cholesterol, a 0.19 mmol/L decrease in LDL cholesterol, and a 0.18 decrease in triglycerides.
Researchers from the University of Reading led the study. It was published in the June 2017 issue of the European Journal of Nutrition.
Previous studies suggest that olive leaf extract may help lower blood pressure, triglycerides, and cholesterol. It is available in supplement form.