The Mediterranean diet: what PREDIMED studied

A Spanish trial assigned adults at high cardiovascular risk to a Mediterranean diet with extra-virgin olive oil, one with nuts, or a control low-fat diet. In the Mediterranean arms the hazard ratio for major cardiovascular events was 0.69 and 0.72. This is an observation in one high-risk population; the figures come from the 2018 republication that corrected randomisation irregularities.