Mixed

Adherence to a Mediterranean diet supplemented with extra-virgin olive oil (EVOO) significantly reduces the incidence of invasive breast cancer in postmenopausal women at high cardiovascular risk compared to a control low-fat diet.

If you are a postmenopausal woman with cardiovascular risk factors, incorporating extra-virgin olive oil as a primary fat source (aiming for roughly 1 liter per week distributed across your meals) into a Mediterranean-style diet may significantly lower your risk of developing invasive breast cancer. This benefit appears driven by the polyphenols and monounsaturated fats in the oil, rather than just calorie reduction. Focus on high-quality EVOO and use it to replace saturated fats, rather than adding it on top of an already high-fat diet.