Olive Leaf

Oleae europaea; Oleae folium; Olivier

... One of the most active chemicals found in the leaves of olive trees is known as oleuropein. In animal studies, oleuropein not only prevented the development of high blood pressure but also reduced existing high blood pressure. Although the possible reasons for these effects are not known, it is thought that oleuropein may relax blood vessels, and it may also prevent deposits of plaque that lead to arteriosclerosis or "hardening of the arteries". A few small human studies of olive leaf for controlling high blood pressure have been inconclusive and more studies are needed to confirm or deny these effects. ...

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