The short answer
Polyphenols are natural plant compounds in extra virgin olive oil. They're a big reason good EVOO tastes bitter and peppery, and they're the bit the European Food Safety Authority (EFSA) singled out for a specific health claim about protecting blood lipids from oxidative stress. Higher numbers on a lab report usually mean a fresher, more bitter oil — not a miracle bottle.
If you just want a high-polyphenol oil you can buy in Singapore, we stock Olea Kotti organic extra virgin olive oil (listing claims 531 mg of polyphenols per kg). The rest of this piece is how to read that figure, and what the research actually says.
What polyphenols are (and why the oil tastes sharp)
Extra virgin olive oil is pressed from olives without refining. Along with the fat, you get a mix of phenolic compounds — things like oleuropein derivatives, hydroxytyrosol and tyrosol. Those compounds are bitter and pungent. If an oil tastes flat and buttery with no pepper at the back of the throat, the polyphenol level is often low, either because the olives were late-harvest, the oil was refined, or it has sat around too long.
Total polyphenols are usually reported in milligrams per kilogram (mg/kg), sometimes written as ppm. That is a total figure from a lab test. It is not the same as the specific hydroxytyrosol number EFSA uses for its claim — more on that below.
The EFSA claim, word for word
EFSA and the EU register a health claim for olive oil polyphenols that can be used when the oil provides 5 mg of hydroxytyrosol and its derivatives (such as the oleuropein complex and tyrosol) per 20 g of olive oil. The permitted wording is that olive oil polyphenols contribute to the protection of blood lipids from oxidative stress, and that the beneficial effect is obtained with 20 g of olive oil daily.
That 5 mg / 20 g threshold is about those specific compounds, not total polyphenols. So a bottle labelled "500 mg/kg polyphenols" is interesting, but it does not by itself prove the oil meets the EFSA claim. Always check what was measured.
What the bigger trials show
The best-known long-term evidence sits with the Mediterranean diet pattern, not with olive oil in isolation. The PREDIMED trial (Estruch et al., New England Journal of Medicine, 2018 republication) randomised people at high cardiovascular risk to a Mediterranean diet with extra-virgin olive oil, a Mediterranean diet with nuts, or a reduced-fat control. The Mediterranean diet groups had fewer major cardiovascular events than the control group over the follow-up period.
That is a diet pattern result. It supports eating EVOO as part of meals. It does not mean a shot of oil cures or treats disease, and we will not say that.
How to use a high-polyphenol figure sensibly
- Look for a lab number. "High in polyphenols" with no mg/kg is marketing. A tested figure is better.
- Taste it. Bitterness and a peppery finish are normal for high-polyphenol oil. Mild, sweet oil is usually lower.
- Check harvest / best-before. Polyphenols fall as oil ages and sits in light or heat. Buy fresher when you can, and store in a cool, dark cupboard.
- Use it cold or gently warm. Finishing salads, beans, yoghurt, toast and cooked veg keeps more of the sharp taste. You can cook with EVOO, but if you bought it for the phenolics, don't deep-fry it away.
- 20 g is about 1½ tablespoons. That is the daily amount tied to the EFSA claim wording. You do not need to drink a glass of it.
Where Olea Kotti sits
Olea Kotti is a Tunisian organic extra virgin olive oil we sell at Home Genie. The product listing states it is high in polyphenols at 531 mg per kg, cold-pressed, with acidity under 0.2% when bottled, and it carries organic certifications (including USDA Organic and Agriculture Biologique) plus a run of international awards. Bottles come in 250 ml and 500 ml.
We are not claiming it meets the EFSA hydroxytyrosol threshold — that needs a hydroxytyrosol-specific test, which is a different number from total polyphenols. What we can say is what is on the listing: a tested total polyphenol figure of 531 mg/kg, and an oil that tastes like a proper early-harvest EVOO.
Related reading
If you came here because of longevity influencers, read Bryan Johnson's olive oil protocol next — we stick to what Bryan Johnson has published himself. For a buying checklist in Singapore stores and online, see how to choose high-polyphenol EVOO in Singapore.
FAQ
What are polyphenols in olive oil?
They are natural plant compounds in extra virgin olive oil. They taste bitter and peppery, and they are the compounds behind the EFSA health claim about protecting blood lipids from oxidative stress.
What polyphenol level is considered high?
There is no single global cut-off. Many specialty producers aim for several hundred mg/kg of total polyphenols. Bryan Johnson's Blueprint EVOO product page states over 400 mg of polyphenols. Our Olea Kotti listing states 531 mg per kg. Total polyphenols are not the same as the EFSA hydroxytyrosol figure.
What is the EFSA olive oil polyphenol claim?
Olive oil polyphenols contribute to the protection of blood lipids from oxidative stress when the oil provides 5 mg of hydroxytyrosol and its derivatives per 20 g of olive oil, taken daily.
Does high-polyphenol olive oil cure disease?
No. The authorised EU claim is about protecting blood lipids from oxidative stress. Larger trials like PREDIMED support a Mediterranean diet that includes EVOO. Nobody should treat oil as medicine.
Where can I buy high-polyphenol olive oil in Singapore?
Home Genie stocks Olea Kotti organic extra virgin olive oil, listed at 531 mg polyphenols per kg, in 250 ml and 500 ml. See the product page for current details.
