There is a known study that demonstrates the high content of polyphenols in D.O. Montoro-Adamuz oils, which makes them oils rich in natural antioxidant agents, providing very significant health benefits. In that study, polyphenol values have been obtained which are more than double those in oils made from a single variety, namely Picual. This is thanks to the native Nevadillo Negro variety and the soil and climate conditions in the district.