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Claim
Strong Support
mechanistic
Analysis v4

Consuming phenol-rich extra virgin olive oil changes the activity of genes involved in oxidative stress and inflammation in healthy adults within a short time, but it is not known whether these...

52
Pro
0
Against

Mechanism

Synthesis from 1 study

How it works

Eating phenol-rich olive oil causes a compound called hydroxytyrosol to enter the blood and turn on genes that make proteins to clean up harmful molecules. These proteins reduce the amount of damaged fats in the bloodstream.

Most probable mechanism

In Simple Terms

When phenol-rich olive oil is consumed, hydroxytyrosol enters the bloodstream and turns on specific genes that make proteins to neutralize harmful molecules produced during metabolism. These proteins break down damaging compounds, which lowers the level of oxidized fats in the blood.

Causal chain
1

Hydroxytyrosol and its derivatives are absorbed from the gastrointestinal tract and enter systemic circulation.

Supported by evidence
which leads to
2

Hydroxytyrosol binds to and activates transcription factors that recognize antioxidant response elements in DNA.

Verified by multiple studies
which leads to
3

Activated transcription factors increase the rate of gene transcription for antioxidant enzymes including catalase and superoxide dismutase 1.

Verified by multiple studies
which leads to
4

Elevated levels of catalase and superoxide dismutase 1 enhance the breakdown of reactive oxygen species and lipid peroxidation products.

Verified by multiple studies
which leads to
5

Reduced oxidative damage leads to lower levels of oxidized low-density lipoprotein and malondialdehyde in circulation.

Verified by multiple studies

Evidence from Studies

Supporting (1)

52

Community contributions welcome

52

Effects of postprandial hydroxytyrosol and derivates on oxidation of LDL, cardiometabolic state and gene expression: a nutrigenomic approach for cardiovascular prevention.

Randomized Controlled Trial
Human
2019 Jul

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

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Source Study

Effects of postprandial hydroxytyrosol and derivates on oxidation of LDL, cardiometabolic state and gene expression: a nutrigenomic approach for cardiovascular prevention.

Score: 52
DOI: 10.2459/JCM.0000000000000816

Similar Assertions

Consuming 25 grams of phenol-rich extra virgin olive oil lowers levels of oxidized LDL and malondialdehyde in healthy adults within two hours, which reflects a reduction in lipid peroxidation and a decrease in oxidative damage to arterial walls.

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Regular consumption of extra virgin olive oil is associated with better cardiovascular health and improved liver health due to the presence of polyphenols.

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In elderly people, high-phenolic extra virgin olive oil increases FRAP and PON-1 antioxidant activity only in those who have had a heart attack, not in those who have not, when both groups consume the same amount and have similar baseline health.

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In older adults who previously had a heart attack, drinking high-phenolic extra virgin olive oil for 26 weeks does not change plasma malondialdehyde levels, lecithin-cholesterol acyltransferase activity, or fasting polyphenol concentrations, but it does increase FRAP and PON-1 activity.

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Drinking or cooking with extra virgin olive oil may help your blood vessels work better, lower body-wide inflammation, and make your body respond better to insulin—kind of like a healthy oil that keeps your insides running smoothly.

48
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