OleaSelect Polyphenols for Cardiovascular Function & Cholesterol Protection Olive Fruit Extract Olive oil represents the primary oil component of the Mediterranean diet, which has been demonstrated to promote cardiovascular health. Olives are a rich source of over 30 phenolic compounds, which impart the pungent, bitter taste to olive oil. OleaSelect Olive Fruit Polyphenols are particularly rich in the flavonoid tyrosol, hydroxytyrosol, and verbascosides. These phytoantioxidants protect against oxidation of LDL cholesterol and promote healthy circulation.