The health benefits of extra-virgin olive oil may include preventing conditions related to coronary disease, stroke and certain types of cancers. The protective role of virgin olive oil is the result of components that act as antioxidants.

Researchers at the University of Foggia in Italy analyzed several varieties of extra-virgin olive oil produced from groves in the Italian countryside at production and during storage. After three months of storage, the antioxidant activity in the oils remained unchanged.

However, antioxidants decreased by about 40 percent for almost all of the oils after six months.

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Journal of Food Science

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