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OLIVE LEAF EXTRACT BENEFITS:
Oleuropein provides the pungent flavor found in Extra Virgin olive oils. It’s also responsible for most of olive oil’s antioxidant, anti-inflammatory, and disease-fighting characteristics.
The olive tree (Olea europaea) produces oleuropein abundantly in its leaves as well as in the olive fruit itself, and special extraction techniques now allow for the extraction of a stable, standardized form of oleuropein. That means that consumers can have access to one of the most beneficial components of olive oil without the necessity of consuming excessive amounts of olive oil.
Olive leaf extracts and their oleuropein constituents are best known for their blood pressure-lowering effects, but the latest studies reveal their health benefits extend well beyond that. Additional anti-inflammatory and antioxidant properties offer promise in fighting atherosclerosis, diabetes, neurodegenerative diseases, and even arthritis.
Some studies (scroll down for details) demonstrate that olive leaf extracts lead to significant drops in elevated blood pressure. These effects are evident when supplementation occurs either before or after the organism develop hypertension. This means that the extracts have the ability to both prevent and treat high blood pressure.
The drop in blood pressure is accompanied by reduced pressure in the heart’s left ventricle. This results in improved blood flow to the heart’s own coronary blood vessels. Additional human studies demonstrate the ability of olive leaf extracts to significantly reduce blood pressure measurements.
A human study compared olive leaf extract against Captopril, one of the conventional drugs used for treating hypertension. In this study, patients with stage-1 hypertension (140-159 mmHg over 90-99 mmHg) took either 500 mg of olive leaf extract twice daily, or 12.5 mg of captopril twice daily, which was increased as needed to 25 mg twice daily. After 8 weeks of treatment, both groups experienced a drop in mean blood pressure from baseline (11.5 and 13.7 mmHg systolic; 4.8 and 6.4 mmHg diastolic, respectively), with no significant difference between the two groups. In other words, the olive leaf extract performed as well as the prescription drug.
If under medical supervision always consult your GP before taking health supplements. If pregnant or nursing consult your GP before taking health supplements.
Blood pressure is only one measure of Cardiovascular Health; Arterial Health is equally important. Olive leaf extracts fight endothelial dysfunction at multiple levels. They increase the production of nitric oxide, a signaling molecule that helps relax blood vessels. They also help prevent the oxidation of LDL-cholesterol, which is one of the earliest events in developing Atherosclerosis. Oxidized LDL triggers inflammation, further damaging arteries, and olive leaf extract has multi-targeted anti-inflammatory effects.
Olive extracts help protect the brain and central nervous system from the destruction brought on by strokes and age-related degenerative conditions such as Alzheimer’s and Parkinson’s diseases. They accomplish this by suppressing inflammation and reducing the damage done by oxidative stress.
IMMUNE SYSTEM BOOST
Oleuropein, enhances the functioning of the Immune System in multiple ways. Overall, the antiviral properties of olive leaf extract can provide full cover against the major viruses responsible for upper respiratory tract infections during the flu season. In fact, researchers demonstrated that olive leaf extract was especially effective against viral infections when fever was also present. Moreover it is an effective cold and flu relief.
Antioxidants are important for removing free radicals especially reactive oxygen species from the body. These free radicals can damage different tissues and disrupt the balance of metabolism, hormones, neurotransmitters and other essential natural compounds in the body.
- Markin D, Duek L, Berdicevsky I, “In vitro antimicrobial activity of olive leaves”, Mycoses, Volume 46, Issue 3-4, pages 132–136, March 2003
- Serafini M, Laranjinha JA, Almeida LM, Maiani G, "Inhibition of human LDL lipid peroxidation by phenol-rich beverages and their impact on plasma total antioxidant capacity in humans", Journal Nutr. Biochem, Issue 11 pages 585-590, 2000
- Khayyal M.T. et al., “Blood pressure lowering effect of an olive leaf extract (Olea europaea) in L-NAME induced hypertension in rats” Arzneimittelforschung 52(11):797-802, 2002
- Manna C, Migliardi V, Gollino P, SCognamiglio A, Galletti P, Chiariello M, Zoppia V. ,“Oleuropein prevents oxidative myocardial injury induced by ischemia and reperfusion” Journal Nutr Biochem, Aug 2004;15(8):461-6 , 2004
- Bao J, Zhang DW, Zhang JZ, Huang PL, Lee-Huang S, “Computational study of bindings of olive leaf extract (OLE) to HIV-1 fusion protein gp41.“ FEBS Lett. 2007 Jun 12;581(14):2737-42. Epub 2007 May 21
- Jemai H. et al., “Lipid-lowering and antioxidant effects of hydroxytyrosol and its triacetylated derivative recovered from olive tree leaves in cholesterol-fed rats, Journal Agric Food Chem. Issue 56(8):2630-6, 2008
- Yamada K, Ogawa H, Hara A, Yoshida Y, et al, “Mechanism of the antiviral effect of hydroxytyrosol on influenza A virus including H1N1, H3N2, H5N1, H9N2” Antiviral Res. 2009 Jul;83(1):35-44. doi: 10.1016/j.antiviral.2009.03.002. Epub 2009 Mar 24
- Jemai H. et al., “Antidiabetic and Antioxidant Effects of Hydroxytyrosol and Oleuropein from Olive Leaves in Alloxan-Diabetic Rats” J Agric Food Chem, 2009 Oct 14;57(19):8798-804
- Vlassios Goulas, Vassiliki Exarchou Anastassios N. Troganis Eleni Psomiadouet al, “Phytochemicals in olive-leaf extracts and their antiproliferative activity against cancer and endothelial cells” , Molecular Nutrition & Food Research, Volume 53, Issue 5, Pages 600-608, 2009
- Poudyal H. Et al., “Olive Leaf Extract Attenuates Cardiac, Hepatic, and Metabolic Changes in High Carbohydrate-, High Fat-Fed Rats” J Nutr. 2010
- J. Munoz-Marin et al, “Cytoprotective effect of hydroxytyrosyl alkyl ether derivatives after oral administration to rats in a model of glucose-oxygen deprivation in brain slices.”, Journal of Agricolture Food Chem. 60(31):7659-64, 2012
- Castaner O. et al. “Protection of LDL from oxidation by olive oil polyphenols is associated with a downregulation of CD40-ligand expression and its downstream products in vivo in humans”, Journal Clin Nutr. 2012 Mar 21.
- M. Kostomoiri, A.Fragkuoli, M. Sagnou et at, “Oleuropein, an Anti-oxidant Polyphenol Constituent of Olive Promotes α-Secretase Cleavage of the Amyloid Precursor Protein ”, Cell Mol Neurobiol., 33(1): 147-54, 2013