Olive oil and heart health

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Olive Oil and Heart Health

Olive Oil in the Mediterranean Diet

Olive oil, especially extra virgin olive oil, is one of the central foods in the Mediterranean diet. This eating pattern emphasizes vegetables, fruits, legumes, whole grains, nuts, fish, and unsaturated fats while limiting saturated fats and highly processed foods. Long-term studies and major reviews have repeatedly linked Mediterranean-style eating with lower cardiovascular risk, including reduced risk of heart attack, stroke, and cardiovascular death.

A major body of evidence comes from the PREDIMED study and later analyses, which found that people at high cardiovascular risk who followed a Mediterranean diet supplemented with extra virgin olive oil or nuts had fewer major cardiovascular events than those assigned to a reduced-fat diet. These findings helped establish olive-oil-rich Mediterranean eating as one of the best-studied dietary patterns for heart disease prevention.

Extra Virgin Olive Oil and Cardiovascular Protection

Extra virgin olive oil may offer stronger heart-health benefits than refined olive oil because it is less processed and retains more antioxidant and anti-inflammatory compounds. These compounds include olive polyphenols such as hydroxytyrosol, which may help protect LDL cholesterol from oxidation, support healthier blood vessels, and reduce inflammation.

Research summarized in the uploaded material connects extra virgin olive oil with several cardiovascular markers, including improved endothelial function, healthier blood pressure, better HDL function, lower oxidized LDL, reduced inflammation, and improved vascular flexibility. These effects suggest that olive oil may support the cardiovascular system through more than one pathway.

Stroke, Cholesterol, and Blood Pressure Findings

The uploaded material includes recent and historical studies linking higher olive oil intake and stronger Mediterranean diet adherence with lower stroke risk. A long-term study reported that stronger adherence to a Mediterranean diet rich in olive oil, nuts, seafood, whole grains, and vegetables was associated with a reduced risk of stroke.

Olive oil may also help improve cholesterol patterns when it replaces saturated fats such as butter, lard, and some dairy fats. Several studies and reviews report associations between olive oil intake and lower LDL cholesterol, improved HDL function, and lower cardiovascular mortality. Blood pressure research also suggests that olive oil polyphenols may support endothelial function and vascular tone, both of which are important for hypertension prevention and management.

Polyphenols, Inflammation, and Blood Vessel Function

Many of olive oil’s potential benefits may come from its polyphenol content. High-phenolic extra virgin olive oils have been studied for effects on inflammation, oxidative stress, blood pressure, arterial stiffness, lipid metabolism, and endothelial function. The endothelium is the inner lining of blood vessels, and its proper function is important for healthy circulation and reduced atherosclerosis risk.

Reviews and clinical trials in the uploaded material suggest that olive oil polyphenols may reduce oxidative damage, improve HDL cholesterol function, and support healthier blood-vessel behavior. However, formal health claims require strong evidence, and some regulatory reviews note that not every proposed benefit has enough proof for official claims.

Practical Dietary Lessons

The strongest practical message is that olive oil is most beneficial when it replaces less healthy fats rather than simply being added to an unchanged diet. Replacing butter, margarine, mayonnaise, lard, and high-saturated-fat dairy products with olive oil may help improve cardiovascular risk markers.

Extra virgin olive oil is often preferred because it retains more beneficial compounds, but portion size still matters because olive oil is calorie-dense. Olive oil works best as part of a broader heart-healthy eating pattern that includes vegetables, beans, whole grains, nuts, fish, fruits, and minimally processed foods.

Conclusion

The uploaded research and health summaries show that olive oil, especially extra virgin olive oil, is strongly connected with cardiovascular health when used as part of a Mediterranean-style diet. Evidence links olive oil intake with lower cardiovascular disease risk, lower stroke risk, improved cholesterol markers, healthier blood pressure, reduced inflammation, and better blood-vessel function.

While olive oil should not be treated as a cure or supplement-like treatment, it is one of the best-studied heart-healthy fats. Its greatest value appears to come from replacing saturated and highly processed fats and from being used within an overall diet rich in whole, plant-forward foods.

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Mediterranean Diet Can Reduce Risk of Stroke by Up to 25%, Long-Term Study Suggests

| Andrew Gregory | The Guardian | February 4, 2026

A large long-term study found that stronger adherence to a Mediterranean diet rich in olive oil, nuts, seafood, whole grains and vegetables was associated with lower stroke risk. The article is useful because it connects olive-oil-centered eating patterns with one of the most serious cardiovascular outcomes.

Evaluation of the Effect of Olive Extracts on Blood Pressure and Cardiovascular Health Markers in Adults

| S. Lauwers et al. | Food & Function | 2026

This randomized placebo-controlled trial tested olive-derived compounds for effects on blood pressure, lipids and oxidative stress markers. It helps show how researchers are examining specific olive polyphenols as possible tools for cardiovascular prevention.

Effects of Olive Leaf Polyphenols on Blood Lipid Profiles and Cardiovascular Health

| S. van Stratum et al. | Food & Function | 2026

This review examines olive-derived polyphenols and their effects on blood lipids, oxidative stress and vascular markers. It is relevant to heart health because olive oil’s benefits may come not only from fat quality but also from plant compounds.

Phenolic Compounds Naturally Present in Olive Oil and Cardiovascular Claims

| EFSA Panel on Nutrition | EFSA Journal | 2025

EFSA evaluates claims about olive oil phenolic compounds, LDL cholesterol and blood pressure. The article is important because it shows the difference between promising research and the stricter evidence needed for formal health claims.

Extra Virgin Olive Oil Improves Vascular Endothelial Function and Hemodynamics

| C. Kourek et al. | Nutrients | 2025

This study examines how extra virgin olive oil affects endothelial function and blood-flow measures. It supports the idea that olive oil may help heart health by improving the behavior of blood vessels, not just cholesterol numbers.

Effects of High-Phenolic Extra Virgin Olive Oil on Cardiovascular Risk Factors

| C. Kourek et al. | Nutrients | 2025

This article focuses on high-phenolic extra virgin olive oil and markers such as oxidized LDL, HDL function, inflammation and endothelial health. It highlights why the polyphenol content of olive oil may matter for cardiovascular protection.

High Polyphenol Extra Virgin Olive Oil and Metabolically Unhealthy Obesity

| K. Liva et al. | Nutrients | 2025

This study reports that high-polyphenol extra virgin olive oil improved inflammation, oxidative stress, glycemic control and endothelial function. These markers are closely tied to metabolic syndrome, hypertension and cardiovascular disease risk.

The Mediterranean Diet and Cardiovascular Disease

| M. Barbería-Latasa et al. | Nutrients | 2025

This review explains why extra virgin olive oil is one of the defining foods in Mediterranean diet scoring systems. It connects olive oil with a broader dietary pattern known for reducing cardiovascular risk.

Olive Oil Intake and Cardiovascular Disease, Cancer, and All-Cause Mortality

| Y. Ke et al. | Critical Reviews in Food Science and Nutrition | 2024

This systematic review and dose-response meta-analysis found that higher olive oil intake was linked with lower cardiovascular disease, coronary heart disease, cardiovascular mortality and all-cause mortality. It is useful for understanding the population-level evidence behind olive oil recommendations.

Health Outcomes Associated With Olive Oil Intake

| M. Chiavarini et al. | Nutrients | 2024

This umbrella review summarizes evidence from multiple meta-analyses on olive oil and health outcomes. It reports that cardiovascular disease and cardiovascular risk factors are among the strongest areas of observed benefit.

Recipe for Heart Health: A Randomized Crossover Trial

| A.M. Krenek et al. | Journal of the American Heart Association | 2024

This trial compared a low-oil whole-food plant-based vegan diet with a Mediterranean diet rich in extra virgin olive oil. It is helpful because it shows how olive oil can improve risk markers, while also comparing it with another heart-healthy dietary strategy.

Is Extra Virgin Olive Oil Better for Heart Health Than Refined Olive Oil?

| Examine Staff | Examine | November 19, 2024

Examine summarizes research comparing refined olive oil and polyphenol-rich extra virgin olive oil. The article explains why extra virgin olive oil may offer added cardiovascular value through phenols such as hydroxytyrosol.

Are All Olive Oils Equally Healthy for You? A Look at the Research

| Jennifer Cook | The Washington Post | March 18, 2024

This article reviews research linking olive oil with lower blood pressure, improved heart markers and metabolic benefits. It also helps explain why extra virgin olive oil and fresh, high-quality oils may be more useful than heavily refined versions.

Extra Virgin Olive Oil Lowers Bad Cholesterol in People With Central Obesity

| Tingmin Koe | NutraIngredients | March 6, 2024

This article reports on a randomized trial in people with central obesity that found LDL cholesterol reductions with extra virgin olive oil. It is relevant because abdominal obesity and LDL cholesterol are both major cardiovascular risk factors.

Extra-Virgin Olive Oil vs. Olive Oil: How Do They Compare?

| Jillian Kubala | Health | 2024

This article compares extra virgin olive oil with refined olive oil, emphasizing differences in processing, antioxidants and polyphenols. It explains why both oils provide monounsaturated fats, but extra virgin olive oil may have stronger heart-protective properties.

Olive Oil and Healthy Aging: Cardiovascular Links Beyond the Mediterranean

| Alyssa Hui | Health | July 24, 2023

This article focuses on dementia mortality but also explains that olive oil may support brain health partly through cardiovascular pathways. It is useful because vascular health is closely tied to both heart disease and cognitive decline.

Mediterranean Diet: Facts, Benefits, and Foods To Eat

| Jillian Kubala | Health | March 20, 2023

This guide identifies olive oil as the primary fat in the Mediterranean diet and links the pattern to better heart health. It explains how olive oil, vegetables, legumes, fish and whole grains may reduce inflammation and atherosclerosis.

Diabetes and the Mediterranean Style Diet

| Barbie Cervoni | Verywell Health | 2023

This article explains that people with diabetes face higher heart disease risk and may benefit from Mediterranean-style eating with olive oil. It connects olive oil’s monounsaturated fat and polyphenols with cholesterol management and cardiovascular protection.

The Effects of Extra Virgin Olive Oil or Butter on Cardiovascular Disease Risk Markers

| F. Liang et al. | Frontiers in Nutrition | 2023

This crossover study compared extra virgin olive oil with butter and measured blood pressure and blood lipid markers. It supports the practical advice to replace saturated animal fats with olive oil.

Olive Oil in the Mediterranean Diet and Its Biochemical and Molecular Mechanisms

| R. Riolo et al. | Nutrients | 2022

This review explains how olive oil may affect oxidative stress, thrombosis, inflammation, blood pressure and lipid metabolism. It is useful for understanding the biological reasons olive oil may lower cardiovascular risk.

Olive Oil Consumption Is Associated With a Lower Risk of Cardiovascular Disease and Stroke

| C. Donat-Vargas et al. | Clinical Nutrition | 2022

This study reports that olive oil intake is associated with lower risk of cardiovascular disease and stroke. It suggests the greatest benefit may occur around moderate daily intake and may be stronger for virgin olive oil.

Consumption of Olive Oil and Risk of Total and Cause-Specific Mortality Among U.S. Adults

| M. Guasch-Ferré et al. | Journal of the American College of Cardiology | 2022

This cohort study found that higher olive oil intake was associated with lower cardiovascular mortality and overall mortality. The findings support replacing butter, margarine, mayonnaise and dairy fat with olive oil.

Olive Oil and Heart Health

| Yale School of Medicine Staff | Yale School of Medicine | January 10, 2022

Yale summarizes research showing that more than half a tablespoon of olive oil per day was associated with lower risk of death from heart disease. It presents the finding as a practical dietary swap rather than a supplement-like cure.

The #1 Fat to Lower Your Risk for Heart Disease, According to New Research

| Leah Goggins | EatingWell | January 12, 2022

EatingWell reports on research linking daily olive oil intake with lower cardiovascular mortality. The article stresses replacing butter, margarine and other less healthy fats with olive oil.

Olive Oil Consumption and Risk of Cardiovascular Disease and All-Cause Mortality

| M. Xia et al. | Frontiers in Nutrition | 2022

This meta-analysis of cohort studies found that olive oil consumption was associated with lower cardiovascular disease and all-cause mortality. It also notes that virgin olive oil may be especially relevant because it retains more beneficial compounds.

Beneficial Effects of Polyphenol-Rich Olive Oil in Patients With Early Atherosclerosis

| R.J. Widmer et al. | European Journal of Nutrition | 2021

This clinical study examines polyphenol-rich olive oil and endothelial function in people with cardiovascular risk. It is important because endothelial dysfunction is an early step in atherosclerosis.

Effects of Virgin Olive Oil and Phenol-Enriched Virgin Olive Oil on Cardiovascular Risk Markers

| M. Farràs et al. | Nutrients | 2020

This study compares ordinary virgin olive oil with phenol-enriched oil and looks at cardiovascular risk markers. It helps clarify whether the polyphenol fraction of olive oil adds benefits beyond the oil’s fat profile.

The Effect of High Polyphenol Extra Virgin Olive Oil on Blood Pressure and Arterial Stiffness

| K. Sarapis et al. | Nutrients | 2020

This trial studied high-polyphenol versus low-polyphenol olive oil and measured blood pressure and arterial stiffness. It is useful because arterial stiffness and blood pressure are major predictors of cardiovascular risk.

A Review on Management of Cardiovascular Diseases by Olive Polyphenols

| A. Mehmood et al. | Food Science & Nutrition | 2020

This review discusses olive oil polyphenols and their potential roles in atherosclerosis, oxidative stress and inflammation. It highlights how olive-derived compounds may protect the cardiovascular system at multiple levels.

Olive Oil Consumption and Cardiovascular Risk in U.S. Adults

| M. Guasch-Ferré et al. | Journal of the American College of Cardiology | 2020

This study of U.S. men and women found that higher olive oil intake was associated with lower risk of coronary heart disease and total cardiovascular disease. It is important because it shows benefits outside traditional Mediterranean countries.

Impact of Different Types of Olive Oil on Cardiovascular Risk Factors

| L. Schwingshackl et al. | Nutrition, Metabolism and Cardiovascular Diseases | 2019

This systematic review and network meta-analysis compares different olive oils and cardiovascular risk markers. It concludes that high-phenolic olive oil may improve some risk factors, though evidence certainty varies.

The Mediterranean Diet and Cardiovascular Health

| M.A. Martínez-González et al. | Circulation Research | 2019

This major review explains why the Mediterranean diet is strongly linked with cardiovascular prevention. Olive oil is presented as a central source of monounsaturated fat and bioactive compounds within the dietary pattern.

Network Meta-Analysis of Metabolic Effects of Olive Oil in Humans

| E. Tsartsou et al. | Frontiers in Nutrition | 2019

This review compares olive oil interventions and Mediterranean diet components in human studies. It suggests that olive oil polyphenols may influence HDL function and inflammation, while the broader diet also matters.

Vasculoprotective Role of Olive Oil Compounds Via Endothelial Function

| V. Summerhill et al. | Nutrients | 2018

This review focuses on olive oil compounds and vascular biology. It explains how antioxidant and anti-inflammatory effects may help protect the endothelium, the inner lining of blood vessels.

Study Confirms the Heart Health Benefits of a Mediterranean Diet

| CardioSmart Staff | American College of Cardiology | July 13, 2018

CardioSmart summarizes the reanalyzed PREDIMED findings, noting that a Mediterranean diet supplemented with olive oil or nuts reduced major heart events. It is a patient-friendly explanation of one of the most influential diet-and-heart trials.

PREDIMED Study Retraction and Republication

| Harvard T.H. Chan School of Public Health Staff | The Nutrition Source | June 22, 2018

Harvard explains why the PREDIMED trial was corrected and republished, while noting that the main conclusion remained largely unchanged. The article is valuable because it gives context for interpreting evidence on Mediterranean diets supplemented with extra virgin olive oil.

Primary Prevention of Cardiovascular Disease With a Mediterranean Diet Supplemented With Extra-Virgin Olive Oil or Nuts

| R. Estruch et al. | New England Journal of Medicine | 2018

This corrected PREDIMED publication reports fewer major cardiovascular events among high-risk participants assigned to a Mediterranean diet supplemented with extra virgin olive oil or nuts. It remains a central source for olive-oil-rich Mediterranean diet evidence.

A Mediterranean Diet Supplemented With Extra Virgin Olive Oil or Nuts Improves Endothelial Markers

| C.E. Storniolo et al. | European Journal of Nutrition | 2017

This study found improvements in endothelial markers involved in blood pressure control among hypertensive women. It helps connect olive-oil-rich Mediterranean eating with vascular function.

Why Olive Oil Is So Good for the Heart

| Alexandra Sifferlin | Time | February 13, 2017

This article reports on research showing that a Mediterranean diet enriched with olive oil may improve HDL cholesterol function. It explains why “good cholesterol” quality may matter as much as the amount measured in blood tests.

Extra Virgin Olive Oil Polyphenols Promote Cholesterol Efflux and Improve HDL Functionality

| H. Berrougui et al. | Evidence-Based Complementary and Alternative Medicine | 2015

This study examines how extra virgin olive oil polyphenols may improve HDL function and cholesterol removal. It is relevant because better HDL function may help slow atherosclerosis.

Effects of Olive Oil on Markers of Inflammation and Endothelial Function

| L. Schwingshackl et al. | Nutrients | 2015

This systematic review evaluates olive oil’s effects on inflammatory and endothelial markers. These markers are important because chronic inflammation and impaired blood-vessel function are major contributors to heart disease.

Teachings of the PREDIMED Study

| E. Ros et al. | Advances in Nutrition | 2014

This article reviews lessons from the PREDIMED trial and Mediterranean diet research. Olive oil is discussed as one of the key foods that may help explain the cardiovascular protection seen in the trial.

Olive Oil Consumption and Risk of CHD and Stroke

| M.A. Martínez-González et al. | British Journal of Nutrition | 2014

This meta-analysis examines olive oil consumption and risk of coronary heart disease and stroke. It supports the view that olive oil is one of the hallmark foods behind the cardiovascular benefits of Mediterranean eating.

The Mediterranean Diet, Its Components, and Cardiovascular Disease

| R.J. Widmer et al. | The American Journal of Medicine | 2014

This review explains the cardiovascular evidence behind the Mediterranean diet and its individual components. Olive oil is highlighted as a major source of monounsaturated fat and one of the defining foods of the pattern.

Monounsaturated Fatty Acids, Olive Oil and Health Status

| L. Schwingshackl and G. Hoffmann | BMC Medicine | 2014

This systematic review and meta-analysis separates olive oil from other sources of monounsaturated fat. It finds that olive oil itself is more consistently associated with reduced cardiovascular events and mortality.

Olive Oil Intake and Risk of Cardiovascular Disease and Mortality in the PREDIMED Study

| M. Guasch-Ferré et al. | BMC Medicine | 2014

This PREDIMED analysis found that each additional 10 grams per day of extra virgin olive oil was linked with lower cardiovascular event risk. The study helps quantify the relationship between olive oil intake and heart outcomes.

Olive Oil Polyphenols Decrease Blood Pressure and Improve Endothelial Function in Young Women With Mild Hypertension

| R. Moreno-Luna et al. | American Journal of Hypertension | 2012

This trial found that olive oil polyphenols improved blood pressure and endothelial function in young women with mild hypertension. It is important because high blood pressure is a major driver of heart attack and stroke risk.

Beneficial Effects of Polyphenol-Rich Olive Oil in Individuals With Cardiovascular Risk

| R.J. Widmer et al. | European Journal of Nutrition | 2012

This study reports that longer-term supplementation with polyphenol-rich olive oil improved endothelial function in people with low to intermediate cardiovascular risk. It supports the idea that olive oil quality may influence vascular outcomes.

Extra Virgin Olive Oil and Cardiovascular Diseases: Benefits Beyond Monounsaturated Fat

| M.I. Covas et al. | Pharmacological Research | 2007

This review explains how extra virgin olive oil may protect the heart through antioxidant, anti-inflammatory and lipid-related mechanisms. It is useful for showing why olive oil is more than just a source of monounsaturated fat.

The Effect of Olive Oil Polyphenols on Heart Disease Risk Factors

| M.I. Covas et al. | Annals of Internal Medicine | 2006

This randomized trial found that olive oil with higher polyphenol content improved oxidative damage markers and lipid-related measures. It is a foundational study behind the idea that extra virgin olive oil’s polyphenols matter for heart protection.

Olive Oil and the Cardiovascular System

| M.I. Covas | Pharmacological Research | 2007

This review summarizes evidence that olive oil may reduce cardiovascular risk through effects on LDL oxidation, inflammation, blood pressure and blood vessel function. It provides a broad scientific basis for olive oil’s role in heart-healthy eating.

Mediterranean Diet, Olive Oil and Cardiovascular Protection

| A. Trichopoulou et al. | New England Journal of Medicine | 2003

This landmark Mediterranean diet cohort study helped establish the connection between Mediterranean eating patterns and lower mortality. Olive oil is one of the central foods in that pattern and helps distinguish it from low-fat diet approaches.

The Seven Countries Study and Mediterranean Eating Patterns

| Seven Countries Study Staff | Seven Countries Study | Historical

The Seven Countries Study helped shape the early understanding that Mediterranean eating patterns were linked with lower heart disease rates. Olive oil was a defining fat source in many traditional Mediterranean diets and became central to later cardiovascular nutrition research.

Is Extra Virgin Olive Oil Better for Your Heart Than Regular Olive Oil?

| Harvard Health Publishing | Harvard Health Publishing | March 9, 2026

Harvard explains that all olive oil is rich in monounsaturated fat, but extra virgin olive oil preserves more antioxidant and anti-inflammatory compounds. The article frames olive oil as most useful when it replaces saturated fats such as butter rather than simply adding extra calories.

Guide to the Mediterranean Diet

| Harvard Health Publishing | Harvard Health Publishing | February 6, 2026

This guide presents olive oil as a central fat in the Mediterranean diet, a pattern linked with lower cardiovascular risk. It emphasizes that olive oil works best as part of an overall diet rich in vegetables, legumes, whole grains, fish, nuts and other minimally processed foods.

Extra-Virgin Olive Oil May Be Healthier Than Regular Olive Oil

| Harvard Health Publishing | Harvard Health Publishing | December 1, 2025

Harvard reports on research suggesting that extra virgin olive oil may offer stronger heart benefits than more refined olive oil. The article focuses on polyphenols and other compounds preserved during minimal processing that may help protect blood vessels and reduce inflammation.

Exploring the Health Benefits of Olive Oil

| Mayo Clinic Press Editors | Mayo Clinic Press | November 26, 2025

Mayo Clinic Press reviews olive oil’s anti-inflammatory compounds and links them to cardiovascular protection. The article explains how olive oil may support heart health when used in place of less healthy fats and as part of a balanced eating pattern.

New Research Strengthens Link Between Olive Oil Polyphenols and Cardiovascular Health

| Olive Oil Times Staff | Olive Oil Times | November 4, 2025

This article covers research showing that polyphenol-rich extra virgin olive oils may have stronger cardiovascular effects than lower-phenolic oils. It highlights inflammation, oxidative stress and blood-vessel function as key pathways connecting olive oil quality with heart health.

What Happens to Your Body When You Use Extra-Virgin Olive Oil

| Verywell Health Editors | Verywell Health | October 16, 2025

Verywell Health explains that extra virgin olive oil contains phenols and monounsaturated fats that may help lower blood pressure and reduce heart disease risk. The article cautions that olive oil is still calorie-dense and is best used as a replacement for less healthy fats.

The #1 Cooking Oil for Heart Health, According to Registered Dietitians

| Health Editors | Health | October 9, 2025

Dietitians interviewed in this article identify extra virgin olive oil as a top cooking oil for heart health because of its monounsaturated fats and antioxidants. The article stresses that the overall diet matters most, but olive oil is one of the best-studied heart-healthy fats.

Fast Facts on Fats and Heart Health

| Mayo Clinic Health System Staff | Mayo Clinic Health System | September 16, 2025

Mayo Clinic Health System explains the difference between saturated fats and unsaturated fats, recommending oils such as olive oil over butter and lard. The article connects these swaps to lower LDL cholesterol and reduced heart disease risk.

Extra Virgin Olive Oil May Support Cardiometabolic Health

| Examine Staff | Examine | August 21, 2025

Examine summarizes research on extra virgin olive oil and markers such as endothelial function, cholesterol and cardiometabolic risk. The piece is useful because it distinguishes between olive oil as a single food and olive oil within a broader heart-healthy diet.

The Evidence Behind Seed Oils' Health Effects

| Johns Hopkins Bloomberg School of Public Health Staff | Johns Hopkins Bloomberg School of Public Health | June 6, 2025

Johns Hopkins reviews the evidence on cooking oils and explains that unsaturated fats are generally better for cardiovascular health than saturated fats. Olive oil is part of the broader category of healthier liquid oils that can help replace solid fats.

The Role of Olive Oil in Cardiometabolic Risk

| A. Salvo et al. | Nutrients | 2025

This peer-reviewed review discusses olive oil’s role in cardiometabolic risk, including cholesterol, inflammation, blood pressure and glucose metabolism. It explains why extra virgin olive oil may be especially valuable because it combines monounsaturated fat with bioactive polyphenols.

Exploring the Cardiovascular Benefits of Extra Virgin Olive Oil

| E. Milena et al. | Biomolecules | 2025

This review examines how extra virgin olive oil may reduce major cardiovascular risk factors such as hypertension, dyslipidemia, obesity and type 2 diabetes. It emphasizes mechanisms involving endothelial function, nitric oxide, inflammation and oxidative stress.

Exploring the Benefits of Extra Virgin Olive Oil on Cardiovascular Risk Factors

| S. Ussia et al. | Nutrients | 2025

This article reviews evidence linking extra virgin olive oil with improved cardiovascular risk markers. It focuses on the role of antioxidant polyphenols and argues that olive oil may be especially useful as part of integrated prevention and treatment strategies.

Extra Virgin Olive Oil Improves Vascular Function and Hemodynamics

| C. Kourek et al. | Nutrients | 2025

This study reports improvements in endothelial function and hemodynamic markers after extra virgin olive oil intake, especially with high-phenolic oil. It supports the idea that olive oil quality and polyphenol content may influence measurable vascular benefits.

Olive Oil Polyphenols and the Maintenance of Normal HDL

| European Food Safety Authority Panel | EFSA Journal | 2025

EFSA evaluates evidence on olive oil polyphenols and HDL-related lipid metabolism. The article is useful for separating strong claims from still-developing evidence about olive oil compounds and cardiovascular markers.

Cardiovascular, Metabolic and Endocrine, Cancer, Mortality and Other Health Outcomes of Olive Oil

| X. Zou et al. | Nutrients | 2025

This broad review looks at olive oil across cardiovascular, metabolic and mortality outcomes. It places heart-health findings in a wider context, showing where evidence is strongest and where more research is needed.

Diet With Low Amounts of Extra Virgin Olive Oil May Be Best for the Heart

| Corrie Pelc | Medical News Today | August 1, 2024

Medical News Today covers a study comparing higher and lower extra virgin olive oil use within plant-forward diets. The article notes that both approaches improved LDL cholesterol, while lower-oil patterns showed some additional short-term cardiometabolic advantages.

Is Extra-Virgin Olive Oil Extra Healthy?

| Harvard Health Publishing | Harvard Health Publishing | July 22, 2024

Harvard explains that extra virgin olive oil contains more preserved phenols than refined olive oil. The article emphasizes that olive oil is heart-healthy mainly when it replaces saturated fats and fits into a Mediterranean-style diet.

What Is the Mediterranean Diet?

| American Heart Association Staff | American Heart Association | May 15, 2024

The American Heart Association describes the Mediterranean diet as a pattern that includes regular use of olive oil along with vegetables, fruits, beans, whole grains, fish and nuts. It presents olive oil as one part of a broader heart-protective eating style.

6 Major Benefits of Extra Virgin Olive Oil

| Cleveland Clinic Staff | Cleveland Clinic | January 16, 2024

Cleveland Clinic reviews extra virgin olive oil’s antioxidants, monounsaturated fats and anti-inflammatory effects. The article highlights lower heart disease risk and explains why extra virgin olive oil is generally preferred over more refined oils.

Olive Oil Polyphenols Improve HDL Cholesterol and Promote Maintenance of Lipid Metabolism

| R. Zupo et al. | Metabolites | December 2023

This systematic review and meta-analysis examines randomized trials of olive oil polyphenols and lipid profiles. It reports evidence that polyphenols may improve HDL cholesterol and help maintain healthier lipid metabolism.

Mediterranean Diet for Heart Health

| Mayo Clinic Staff | Mayo Clinic | July 15, 2023

Mayo Clinic explains that olive oil and nuts are main fat sources in the Mediterranean diet. It connects unsaturated plant fats with lower total cholesterol and LDL cholesterol when they replace saturated and trans fats.

A Heart-Healthy Diet for Cardiovascular Disease Prevention

| A. Diab et al. | Johns Hopkins / Current Atherosclerosis Reports | 2023

This review compares Mediterranean, DASH and plant-based diets for cardiovascular prevention. Olive oil appears within the Mediterranean pattern, which the authors describe as one of the best-supported dietary approaches for heart health.

Mediterranean and Low-Fat Diets May Be Best at Lowering Risk of Death, Heart Attacks

| Jessica Norris | Medical News Today | April 5, 2023

This article reports on evidence comparing major diet patterns for people at cardiovascular risk. It notes that Mediterranean-style diets, which commonly use olive oil as a key fat, were linked with fewer cardiovascular events.

Mediterranean Lifestyle, Not Just Diet, May Greatly Improve Health

| American Heart Association News | American Heart Association | February 28, 2023

The American Heart Association reports that Mediterranean lifestyle factors, including diet, activity and social habits, may improve health. Olive oil is part of the Mediterranean dietary pattern that has repeatedly been associated with lower heart attack and stroke risk.

Olive Oil Consumption and Risk of Cardiovascular Disease and All-Cause Mortality

| M. Xia et al. | Frontiers in Nutrition | October 2022

This meta-analysis of prospective cohort studies finds that olive oil consumption is inversely associated with cardiovascular disease and all-cause mortality. The authors suggest benefits may be seen up to about 20 grams per day, while calling for more research.

Olive Oil for Cholesterol: Benefits, Types, and Other Foods

| Jenna Fletcher | Medical News Today | October 26, 2022

Medical News Today explains how olive oil may affect LDL cholesterol, HDL cholesterol and triglycerides. The article emphasizes that cholesterol benefits depend on replacing saturated fats and improving the overall diet.

The Benefits of Adding a Drizzle of Olive Oil to Your Diet

| Michael Merschel | American Heart Association News | September 28, 2022

This American Heart Association article reviews evidence that more than half a tablespoon of olive oil per day is linked with lower heart disease risk. It explains that olive oil’s monounsaturated fats and polyphenols may help cholesterol, blood pressure and inflammation.

What Goes Into a Mediterranean Diet, and How to Get Started

| Michael Merschel | American Heart Association News | August 23, 2022

The article gives practical guidance on building a Mediterranean-style diet that includes olive oil, vegetables, whole grains, fish, beans and nuts. It presents olive oil as a flexible heart-healthy fat rather than a stand-alone cure.

Olive Oil: Can It Lower Your Risk of Dying Early?

| Harvard Health Publishing | Harvard Health Blog | March 1, 2022

Harvard discusses a large observational study linking higher olive oil intake with lower risk of death from cardiovascular disease and other causes. The article stresses that the strongest message is replacing butter, margarine, mayonnaise and dairy fat with olive oil.

A Healthy Drizzle: Olive Oil Linked to Lower Heart-Related Deaths

| Harvard Health Publishing | Harvard Health Publishing | April 1, 2022

This article summarizes findings from long-running U.S. cohorts showing lower heart-related mortality among people consuming at least half a tablespoon of olive oil daily. It highlights substitution of olive oil for animal fats and processed spreads.

High Olive Oil Consumption Associated With Longevity

| Harvard Health Publishing | Harvard Health Publishing | April 1, 2022

Harvard reports that higher olive oil intake was associated with lower mortality from cardiovascular disease, cancer, neurodegenerative disease and respiratory disease. The article notes that the study was observational, so it shows association rather than proof of causation.

Adding More Olive Oil to Your Diet May Help Prevent an Early Death

| Harvard Health Publishing | Harvard Health Publishing | May 1, 2022

This Harvard article focuses on the mortality findings from a large study of nurses and health professionals. It explains that replacing animal fats with olive oil may be one practical way to improve heart-related risk.

Higher Olive Oil Intake Associated With Lower Risk of CVD Mortality

| American College of Cardiology Staff | American College of Cardiology | January 10, 2022

The American College of Cardiology summarizes research linking more than half a tablespoon of olive oil per day with lower cardiovascular mortality. The report also highlights lower risk when olive oil replaces margarine, butter, mayonnaise or dairy fat.

Consumption of Olive Oil and Risk of Total and Cause-Specific Mortality Among U.S. Adults

| M. Guasch-Ferré et al. | Journal of the American College of Cardiology | January 2022

This cohort study follows U.S. adults and finds that higher olive oil intake is associated with lower total and cause-specific mortality. The strongest practical implication is that replacing less healthy fats with olive oil may support cardiovascular longevity.

Can Small Amounts of Olive Oil Keep the Death Away?

| Susanna C. Larsson | Journal of the American College of Cardiology | January 10, 2022

This editorial comments on the evidence linking olive oil intake with lower mortality. It places the findings in context, noting that olive oil may be a marker of a healthier dietary pattern as well as a beneficial fat source.

Effect of Extra Virgin Olive Oil and Butter on Endothelial Function in Type 1 Diabetes

| A. Cutruzzolà et al. | Nutrients | 2021

This study compares extra virgin olive oil with butter in meals for people with type 1 diabetes. It reports that extra virgin olive oil improved vascular function compared with butter, supporting the heart-health value of replacing saturated fat.

Olive Oil May Lower LDL-Cholesterol Levels

| International Olive Council Staff | International Olive Council | July 1, 2021

This article discusses research on olive oil, Mediterranean eating and LDL cholesterol. It reinforces the idea that olive oil is most beneficial when it is part of a diet pattern that replaces saturated fats and improves overall lipid quality.

The Benefits of Extra Virgin Olive Oil on Cardiovascular Health

| Observatoire de la prévention Staff | Observatoire de la prévention | March 16, 2021

This review-style article summarizes how extra virgin olive oil may improve endothelial function, blood pressure and oxidized LDL. It highlights the difference between refined olive oil and polyphenol-rich extra virgin olive oil.

Just a Half-Tablespoon of Olive Oil a Day May Help the Heart

| Harvard Health Publishing | Harvard Health Publishing | August 1, 2020

Harvard reports that people consuming at least half a tablespoon of olive oil daily had lower heart disease risk than those who used none. The article makes the finding practical by focusing on small substitutions in everyday meals.

Effects of Olive Oil on Blood Pressure

| M. Massaro et al. | Nutrients | 2020

This review examines epidemiological, clinical and mechanistic evidence linking olive oil with lower blood pressure. It discusses how olive oil compounds may improve endothelial function, inflammation and vascular tone.

Olive Oil Consumption and Cardiovascular Risk in U.S. Adults

| M. Guasch-Ferré et al. | Journal of the American College of Cardiology | 2020

This study of two large U.S. cohorts finds that higher olive oil intake is associated with lower coronary heart disease and total cardiovascular disease risk. It also reports benefits when olive oil replaces margarine, butter, mayonnaise or dairy fat.

Olive Oil May Lower Heart Disease Risk

| American Heart Association News | American Heart Association | March 5, 2020

The American Heart Association reports that consuming more than half a tablespoon of olive oil per day was associated with lower cardiovascular and coronary heart disease risk. The article emphasizes replacing less healthy fats rather than adding olive oil on top of the same diet.

Consuming More Olive Oil Associated With Less Heart Disease in Americans

| American Heart Association Newsroom | American Heart Association | March 5, 2020

This newsroom release summarizes preliminary research presented at an American Heart Association meeting. It highlights lower heart disease risk among Americans who consumed more olive oil, especially when it replaced butter, margarine or mayonnaise.

Olive Oil: Health Benefits and Nutritional Information

| Yvette Brazier | Medical News Today | December 18, 2019

Medical News Today reviews olive oil nutrition, including monounsaturated fats and polyphenols. The article links olive oil with cardiovascular benefits, inflammation reduction and improved metabolic markers when included in a healthy diet.

Network Meta-Analysis of Metabolic Effects of Olive-Oil in Humans

| E. Tsartsou et al. | Frontiers in Nutrition | 2019

This network meta-analysis examines human intervention studies on olive oil, Mediterranean diet components and metabolic outcomes. It suggests that many benefits are mediated by the full Mediterranean diet, while olive oil polyphenols may especially affect HDL and inflammation.

Virgin Olive Oil and Health: Summary of the III International Conference on Virgin Olive Oil and Health Consensus Report

| J.J. Gaforio et al. | Nutrients | 2019

This consensus report summarizes scientific evidence on virgin olive oil and health. It includes cardiovascular mechanisms such as oxidative stress, inflammation, lipid oxidation and endothelial function.

Why Does Olive Oil Keep Heart Attack and Stroke at Bay?

| Maria Cohut | Medical News Today | September 7, 2018

This article explains research into a mechanism by which unsaturated fats in olive oil may protect against clot-related cardiovascular events. It focuses on apolipoprotein A-IV and how olive-oil-rich meals may influence blood platelet activity.

Mediterranean Diet May Lower Stroke Risk in Women

| American Heart Association News | American Heart Association | September 20, 2018

The American Heart Association reports on evidence that Mediterranean-style eating may lower stroke risk in women. Olive oil is one of the defining fats in this dietary pattern, alongside vegetables, fruits, grains, beans, nuts and fish.

Extra Virgin Olive Oil or Olive Oil: Which Is Healthier?

| Rachel Nall | Medical News Today | 2018

This article compares extra virgin olive oil with more refined olive oil. It explains that both provide monounsaturated fats, while extra virgin olive oil retains more antioxidants that may contribute to heart protection.

Mediterranean Diet With Virgin Olive Oil May Be Recipe for Good Cholesterol

| American Heart Association News | American Heart Association | February 13, 2017

This American Heart Association article reports that a Mediterranean diet rich in virgin olive oil may improve the function of HDL cholesterol. The article is important because it focuses not just on cholesterol levels, but also on how well HDL works.

5 Tips to Take From the Mediterranean Diet

| Johns Hopkins Patient Guide to Diabetes Staff | Johns Hopkins Medicine | 2018

Johns Hopkins recommends olive oil as a monounsaturated fat within Mediterranean-style eating. The article links olive oil and polyphenols with lower LDL cholesterol, improved HDL cholesterol and protection from heart disease.

Effects of Olive Oil on Markers of Inflammation and Endothelial Function

| L. Schwingshackl et al. | Nutrients | 2015

This systematic review evaluates olive oil’s effects on inflammation and endothelial function, two key pathways in cardiovascular disease. It finds evidence that olive oil may improve markers related to vascular health.

Olive Oil Intake and Risk of Cardiovascular Disease and Mortality in the PREDIMED Study

| M. Guasch-Ferré et al. | BMC Medicine | 2014

This PREDIMED analysis finds that higher extra virgin olive oil intake is associated with lower cardiovascular disease and mortality risk among high-risk adults. It is one of the key studies connecting olive oil consumption with real-world heart outcomes.

Mediterranean Diet and Cardiovascular Health

| E. Ros et al. | Circulation Research | 2014

This review summarizes evidence that Mediterranean-style diets reduce cardiovascular risk. Olive oil is discussed as a central component of the diet, along with nuts, vegetables, fruits, legumes, whole grains and fish.

Monounsaturated Fatty Acids, Olive Oil and Health Status

| L. Schwingshackl and G. Hoffmann | BMC Medicine | 2014

This systematic review and meta-analysis examines monounsaturated fat, olive oil and major health outcomes. It reports that olive oil, more than mixed monounsaturated fat sources, is associated with reduced cardiovascular events and mortality.

Extra-Virgin Olive Oil May Lower Afib Risk

| Harvard Health Publishing | Harvard Health Publishing | July 16, 2014

Harvard summarizes research suggesting that a Mediterranean diet rich in extra virgin olive oil may lower the risk of atrial fibrillation. The article connects olive oil not only with arteries and cholesterol, but also with heart rhythm health.

Primary Prevention of Cardiovascular Disease With a Mediterranean Diet Supplemented With Extra-Virgin Olive Oil or Nuts

| R. Estruch et al. | New England Journal of Medicine | 2018

This landmark PREDIMED trial found fewer major cardiovascular events among high-risk people assigned to a Mediterranean diet supplemented with extra virgin olive oil or nuts compared with a reduced-fat diet. It remains a major source for the heart-health case for olive oil-rich Mediterranean eating.

Olive Oil in the Mediterranean Diet and Its Biochemical and Molecular Mechanisms

| R. Riolo et al. | Nutrients | 2022

This review explains how olive oil compounds may influence oxidative stress, endothelial dysfunction, inflammation, thrombosis, blood pressure and lipid metabolism. It is useful for understanding why extra virgin olive oil may protect cardiovascular health beyond its fat profile alone.