Extra virgin olive oil
In the PREDIMED trial, over 7,000 people at high risk of heart disease followed a Mediterranean diet with extra virgin olive oil. They had about 30% fewer major heart attacks and strokes than a low-fat diet group. High-polyphenol oils carry an approved claim: olive oil polyphenols help protect blood fats from oxidative stress.
Source: Estruch et al., New England Journal of Medicine, 2018
