Posted on 13 July 2020
The extract of olive leaves, as distinct from olive oil, contains high levels of phenols that constitute the main bioactive component of this supplement.
As the immune system ages, it not only becomes less capable of recognising and eliminating pathogens, but also switches to a more inflammatory state. This is a problem because inflammation drives many chronic diseases such as atherosclerosis. Olive phenols exert anti-oxidant and anti-inflammatory effects, and can reduce the oxidation of LDL cholesterol, which is a key step in the development of atherosclerosis.
Leaf phenols also appear to lower blood pressure and improve LDL/HDL cholesterol balance, and may also lower somewhat.
Olive leaf extract: https://examine.com/supplements/olive-leaf-extract/
Olive Leaf Extract Attenuates Inflammatory Activation and DNA Damage in Human Arterial Endothelial Cells: https://doi.org/10.3389/fcvm.2019.00056
Olive Oils High in Phenolic Compounds Modulate oxidative/antioxidative Status in Men: DOI: 10.1093/jn/134.9.2314
Antioxidant Activity of Olive Polyphenols in Humans: A Review: doi: 10.1024/0300-98126.96.36.199.
Changes in the Phenolic Content of Low Density Lipoprotein After Olive Oil Consumption in Men. A Randomized Crossover Controlled Trial: DOI: 10.1017/S0007114507778698
Olive (Olea Europaea) Leaf Extract Effective in Patients With stage-1 Hypertension: Comparison With Captopril: DOI: 10.1016/j.phymed.2010.08.016
Olive (Olea Europaea L.) Leaf Polyphenols Improve Insulin Sensitivity in Middle-Aged Overweight Men: A Randomized, Placebo-Controlled, Crossover Trial: DOI: 10.1371/journal.pone.0057622