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Research

What the studies say, simply

The studies behind Mediterranean and Blue Zones eating, summarised carefully and linked in full.

New England Journal of Medicine · 2018

Primary prevention of cardiovascular disease with a Mediterranean diet supplemented with extra-virgin olive oil or nuts (PREDIMED)

In 7,447 Spanish adults at high cardiovascular risk, a Mediterranean diet with extra olive oil or nuts was associated with about 30% fewer major cardiovascular events than a reduced-fat control diet over about five years.

Study: Primary prevention of cardiovascular disease with a Mediterranean diet supplemented with extra-virgin olive oil or nuts (PREDIMED)

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The American Journal of Clinical Nutrition · 2026

Exploring socioeconomic disparities: the Mediterranean lifestyle and mortality in the Lifelines cohort

A Mediterranean lifestyle score, covering diet, activity, rest and social habits, was associated with lower all-cause mortality across education and income groups. Observational evidence.

Study: Exploring socioeconomic disparities: the Mediterranean lifestyle and mortality in the Lifelines cohort

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Journal of the American College of Cardiology · 2022

Consumption of olive oil and risk of total and cause-specific mortality among U.S. adults

In over 90,000 US health professionals followed for 28 years, eating more than half a tablespoon of olive oil a day was associated with lower mortality than rarely eating it.

Study: Consumption of olive oil and risk of total and cause-specific mortality among U.S. adults

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American Journal of Lifestyle Medicine · 2016

Blue Zones: lessons from the world’s longest lived

Describes common habits in Okinawa, Sardinia, Nicoya, Ikaria and Loma Linda: mostly plant-based eating with beans, natural daily movement, purpose, rest and strong social ties.

Study: Blue Zones: lessons from the world’s longest lived

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Not medical advice. We explain published research in plain English for general interest only. Studies have limits and results vary. Talk to your GP or a qualified health professional before changing your routine, especially if you are pregnant, take medication or have a health condition.