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Backed by Science

Built on the Science of Olive Oil

Olivea was born out of cutting edge research from leading cardiologists & based on human trials published in trusted peer-reviewed medical journals.

Olive Oil & Polyphenol Research
2,000+ Peer-Reviewed StudiesEFSA Authorized Health Claim90,000+ Clinical Participants4x EFSA Daily Threshold

Phenolic compounds from extra virgin olive oil are powerful antioxidants and protect LDL cholesterol from oxidative damage.

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Those in the highest consumption category had 19% lower risk of cardiovascular mortality, 17% lower risk of cancer mortality, 29% lower risk of neurodegenerative mortality.

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Harvard study: High olive oil consumption associated with longevity.

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At least 5 mg of hydroxytyrosol assists in the protection of blood lipids from oxidative stress.

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Olive oil has been proven to lower LDL (bad cholesterol) and raise HDL (good cholesterol).

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Extra virgin olive oil also reduces the risk of heart attacks.

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What the Research Found

What Hydroxytyrosol Does for Your Body

Heart Health

This is the benefit with the strongest regulatory backing. The European Food Safety Authority (EFSA) reviewed the evidence and approved a specific health claim: olive oil polyphenols like hydroxytyrosol contribute to the protection of blood lipids from oxidative stress. In a landmark clinical trial (Covas et al., 2006), people who consumed high-polyphenol olive oil saw their "good" HDL cholesterol rise while their oxidized "bad" LDL dropped.

Studies also show hydroxytyrosol supports healthy blood vessel function and helps maintain normal blood flow, both important for long-term cardiovascular wellness.

EFSA
The EFSA-Approved Olive Polyphenol Health Claim
↑ HDL
Increased Good Cholesterol
↓ oxLDL
Reduced Oxidized LDL
5mg
Daily EFSA Threshold

Brain Health

One of the most promising findings is that hydroxytyrosol (or compounds it breaks down into) can actually reach the brain. Studies show olive polyphenols including HT help protect brain tissue from oxidative injury, and Zheng et al. (2015) found that HT supplementation improved neurogenesis and cognitive function via Nrf2/BDNF pathways.

Researchers have also found it may reduce brain inflammation and guard against the toxic protein buildup associated with age-related cognitive decline.

CNS
Metabolites Detected in Brain
Nrf2
Pathway Activation
↓ Aβ
Amyloid Beta Toxicity
BBB
Blood-Brain Barrier Crossing

Cellular Protection

Most antioxidants work by neutralizing free radicals directly. Hydroxytyrosol goes a step further: it flips on your body's own antioxidant system. It activates a cellular switch called Nrf2, which tells your cells to produce more of their built-in protective enzymes like glutathione.

It also supports your mitochondria, the parts of your cells that generate energy. By reducing oxidative stress at this level, hydroxytyrosol helps keep your cells functioning efficiently as you age.

Nrf2
Master Antioxidant Switch
↑ GSH
Glutathione Production
↑ SOD
Superoxide Dismutase
↓ ROS
Free Radical Reduction

Inflammation Support

Chronic, low-grade inflammation is now considered a root driver of many modern health problems. Hydroxytyrosol helps by dialing down the body's inflammatory signals at the source. Richard et al. (2011) showed that hydroxytyrosol measurably reduced key inflammatory markers in immune cells.

It works alongside oleocanthal, another olive polyphenol found naturally in EVOO, which researchers found has a mechanism similar to ibuprofen (Beauchamp et al., 2005). Together, they offer complementary support for a healthy inflammatory response.

NF-κB
Pathway Inhibition
↓ TNF-α
Pro-Inflammatory Cytokine
↓ IL-6
Inflammation Marker
COX
Oleocanthal Synergy

Metabolic Health

Research suggests hydroxytyrosol may support healthy blood sugar balance. de Bock et al. (2013) found that overweight men who took olive leaf polyphenols showed improved insulin sensitivity, meaning their bodies became more efficient at processing blood sugar.

Lab studies also show it activates AMPK, an enzyme sometimes called the body's "metabolic master switch" because it helps regulate how cells use energy.

AMPK
Metabolic Switch Activation
↑ Insulin
Insulin Sensitivity
↓ Fat
Hepatic Fat
Glucose
Metabolism Support

Skin & Light Protection

D'Angelo et al. (2005) showed that hydroxytyrosol helps protect skin cells from UV-induced oxidative damage, and additional research supports its role in natural collagen production and maintaining an even skin tone.

It also helps reduce the activity of enzymes (called MMPs) that break down collagen as you age. Avola et al. (2019) showed HT prevents blue-light-induced MMP elevation and preserves collagen integrity in skin cells.

UV
Photoprotection
↓ MMP
Collagen Preservation
↑ Type I
Collagen Synthesis
Shield
Dermal Protection

Healthy Aging

Aging is driven by the gradual accumulation of oxidative damage to DNA, proteins, and lipids, compounded by chronic low-grade inflammation. Hydroxytyrosol targets both sides simultaneously: it reduces oxidative damage while dialing down inflammatory signaling.

A 2025 randomized controlled trial showed that 15 mg/day of hydroxytyrosol for 16 weeks significantly reduced DNA damage, protein oxidation, and inflammation markers — the exact biomarkers that deteriorate with age.

↓ 8-OHdG
DNA Damage Marker
↓ Carbonyls
Protein Oxidation
↑ GPx
Antioxidant Defense
↑ TAS
Total Antioxidant Status
How Olivea Delivers It

Capsule-in-Capsule Technology

Most supplements use dry powder. Olivea's dual-capsule design keeps hydroxytyrosol in its natural oil-based matrix for superior absorption.

HT OUTER CAPSULE 400 mg Extra Virgin Olive Oil INNER CAPSULE 200 mg Olive Extract Powder 20 mg Hydroxytyrosol STANDARDIZED TO 10% HT 4x the EFSA daily threshold (5 mg)
Capsule-in-Capsule Technology

Most supplements use dry powder. Olivea’s inner capsule contains 200 mg of olive extract powder standardized to 20 mg hydroxytyrosol, surrounded by an outer capsule filled with 400 mg of real extra virgin olive oil. This keeps the molecule in its natural amphipathic environment, so it absorbs properly in both water and fat phases.

Oil-based matrix Superior bioavailability Freshness-sealed
Our Advisors

Science Advisory Board

Olivea's formulation is guided by leading researchers in cardiovascular health, nutrition science, and polyphenol biochemistry.

Dr. Constantine Tarabanis
Dr. Constantine Tarabanis
Medical Advisor
Dr. Tarabanis graduated from Harvard College, before earning a medical degree from Harvard Medical School, and is a board-certified internist. Now a cardiology fellow at Mass General Brigham-Harvard Medical School, his research spans drug development, vascular tissue engineering, and AI applications in cardiology.
Dr. Joel Kahn
Dr. Joel Kahn
Medical Advisor
Dr. Kahn earned his BA and MD from the University of Michigan, and is a board-certified cardiologist. A Clinical Professor of Medicine at Wayne State University and founder of the Kahn Center for Cardiac Longevity, he is a Fellow of the American College of Cardiology whose work spans preventive cardiology, plant-based nutrition, and vascular health.
Dr. Stephen Anton, PhD
Dr. Stephen Anton, PhD
Medical Advisor
Dr. Anton serves as a Professor at University of Florida's Department of Physiology and Aging. With over 200 published studies in top medical journals, Dr. Anton is a leading researcher on how diet, exercise, and fasting affect the biology of aging. His nationally recognized work focuses on how lifestyle and natural compounds including the polyphenols in olive oil, can protect against obesity, cardiovascular disease, and metabolic decline.
Iliana Flessa
Iliana Flessa
R&D Advisor
Iliana Flessa is a certified olive oil taster based in Kalamata, Greece, in the heart of Messinia's olive country. With over a decade of experience leading quality assurance at Olymp, she oversees Olivea's chemical analysis, polyphenol testing, and sensory evaluation to ensure every batch meets world-class standards.
Proof of Potency

Third-Party Lab Results

Every batch independently tested by ISO 17025-accredited labs. Potency, purity, and safety — published in full.

23.54 mg
hydroxytyrosol per capsule — 17.7% above label claim
View Full Certificate of Analysis →
Potency
✓ 23.54 mg HT/capsule
HPLC verified. Exceeds 20 mg label claim.
Purity
✓ All heavy metals clear
As, Cd, Pb, Hg — well below FDA limits.
Safety
✓ All pathogens absent
Full 8-organism microbial panel clear.
Research Breakdowns

Study Library

Browse peer-reviewed clinical research on olive polyphenols and hydroxytyrosol.

Network Meta-Analysis: Which Type of Olive Oil Best for CV Risk?

Nutr Metab Cardiovasc Dis, 2019
CardiovascularEVOO

Three-City Study: Intensive Olive Oil Use Linked to 41% Lower Stroke Risk

Neurology, 2011
Brain HealthCardiovascular

Nurses' Health: Mediterranean Diet & 29% Lower Heart Disease Risk in 74,886 Women

Circulation, 2009
Brain HealthCardiovascular

Recipe for Heart Health: Plant-Based Diet + EVOO Crossover RCT

J Am Heart Assoc, 2024
CardiovascularEVOO

The Tyrosol to Hydroxytyrosol Conversion: A Human RCT

Free Radic Biol Med, 2019
CardiovascularHydroxytyrosol

EPICOR Italian Women: Olive Oil & Leafy Vegetables Linked to 44% Lower CHD Risk

Am J Clin Nutr, 2011
CardiovascularEVOO

EPIC-Spain: Olive Oil Linked to Lower Coronary Heart Disease Risk

Br J Nutr, 2012
CardiovascularEVOO

EPIC-Spain: Higher Olive Oil Intake Linked to 26% Lower Mortality

Am J Clin Nutr, 2012
CardiovascularEVOO

Olive Oils High in Phenolics Modulate Oxidative Status in Men

J Nutr, 2004
AntioxidantEVOO

Olive Oil Phenolics Reduced Postprandial LDL Oxidation in Humans

Free Radic Biol Med, 2006
AntioxidantCardiovascular

PREDIMED: Mediterranean Diet + EVOO Linked to 68% Lower Breast Cancer Incidence

JAMA Intern Med, 2015
EVOOLongevity

PREDIMED: EVOO Reduced Atrial Fibrillation Risk by 38%

Circulation, 2014
CardiovascularEVOO

PREDIMED Outcome-Wide: EVOO and Multiple Cardiovascular Endpoints

Am Heart J, 2025
CardiovascularEVOO

Hydroxytyrosol-Enriched Bread Improved HbA1c in T2D Adults

Eur J Nutr, 2023
HydroxytyrosolInflammation

The Lipidome Score: How Replacing Saturated Fat Cuts CV and T2D Risk

Nature Medicine, 2024
CardiovascularLongevity

A Polyphenol Signature in Urine Predicts Lower CV Risk in PREDIMED

BMC Medicine, 2025
CardiovascularHydroxytyrosol

Only Virgin Olive Oil -- Not Common -- Reduced Mortality in Spanish Cohort

Eur J Clin Nutr, 2022
CardiovascularEVOO

Italian Cohort: Olive Oil Linked to Lower Cancer, CV and All-Cause Mortality

Eur J Clin Nutr, 2024
CardiovascularEVOO

Within PREDIMED: Higher Olive Oil Intake Linked to 48% Lower CV Mortality

BMC Med, 2014
CardiovascularEVOO

Olive Oil and 14% Lower CV Risk in 90,000+ US Adults

J Am Coll Cardiol, 2020
CardiovascularEVOO

American Heart Association 2021 Dietary Guidance: Olive Oil's Role

Circulation, 2021
CardiovascularEVOO

Reviewing the Evidence: Olive Oil's Cardiovascular Effects (Tarabanis 2023)

Nutr Metab Cardiovasc Dis, 2023
CardiovascularEVOO

CORDIOPREV: 7 Years of Mediterranean Diet for Secondary CV Prevention

Lancet, 2022
CardiovascularEVOO

Olive Oil Linked to 28% Lower Dementia Death in 92,383 Adults

JAMA Netw Open, 2024
Brain HealthCardiovascular

EUROLIVE: Olive Polyphenols Raise HDL -- The Foundational Trial

Ann Intern Med, 2006
AntioxidantCardiovascular

High-Phenolic vs Low-Phenolic Olive Oil: Meta-Analysis of 26 RCTs

Crit Rev Food Sci Nutr, 2019
AntioxidantCardiovascular

PREDIMED Republished: Mediterranean Diet + EVOO Cut Major CV Events by 30%

N Engl J Med, 2018
CardiovascularEVOO

EFSA's 2017 Hydroxytyrosol Safety Opinion: What 'Novel Food Safe' Means

EFSA Journal, 2017
CardiovascularHydroxytyrosol

Olive Oil and 19% Lower Mortality in 92,383 U.S. Adults Over 28 Years

J Am Coll Cardiol, 2022
Brain HealthCardiovascular

Olive Oil and Brain Health: 66% Lower Cognitive Impairment Risk in PREDIMED Trial

Journal of Neurology, Neurosurgery & Psychiatry, 2013
Brain HealthCardiovascular

Hydroxytyrosol Improved Complex Attention in Adults Aged 51 to 82

Nutrients, 2023
Brain HealthHydroxytyrosol

Higher Polyphenol Levels Linked to 29% Lower Inflammation

British Journal of Nutrition, 2020
HydroxytyrosolInflammation

Olive Oil Activated the GLP-1 Pathway in a Controlled Trial

Nutrition & Diabetes, 2015
EVOOMetabolic

Olive Oil and Stroke Risk: A 101,460-Person Meta-Analysis

British Journal of Nutrition, 2014
CardiovascularEVOO

Hydroxytyrosol Metabolism Linked to 56% Lower Cardiovascular Risk in 1,851 Adults

American Journal of Clinical Nutrition, 2017
CardiovascularEVOO

Can a Polyphenol-Rich Diet Slow Biological Aging? An 18-Month Trial

BMC Medicine, 2023
DNA-ProtectionHydroxytyrosol

Hydroxytyrosol Improved Artery Function in Patients with Coronary Disease

European Journal of Clinical Investigation, 2023
AntioxidantCardiovascular

Hydroxytyrosol Improves 7 Biomarkers of Aging and Inflammation

Clinical Nutrition, 2025
AntioxidantCardiovascular

The Science Is In The Capsule

20 mg hydroxytyrosol per capsule. 4x the EFSA threshold. Backed by 2,000+ studies.

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