How Much Olive Oil Per Day? What the Studies Used

Olive oil is one of the few foods where researchers wrote down the daily amount. Harvard asked 92,383 American adults how much they used and followed them for 28 years. A European trial handed 200 men a measured 25 mL a day. A Spanish trial delivered a liter a week to thousands of participants for close to five years.

Put those numbers side by side and a clear range appears. It starts at half a tablespoon and tops out around four. Most of the research sits in the middle, close to the spoonful many people already take each morning.

The Short Answer

Most olive oil research used between half a tablespoon and four tablespoons a day, and the trials that measured blood markers mostly settled on 20 to 25 g, about one and a half to two tablespoons. The FDA's qualified health claim names about 2 tablespoons (23 g), eaten in place of saturated fat. The EU claim is built on a 20 g serving. For most people, 1 to 2 tablespoons a day of a high polyphenol extra virgin oil, used instead of other fats, sits inside that research.

Lowest amount linked to lower mortality: more than 7 g a day, about half a tablespoon (Harvard, 92,383 adults)
The common trial dose: 25 mL a day, a little under 2 tablespoons (EUROLIVE, 200 men)
The EU claim serving: 20 g, about a tablespoon and a half
The FDA qualified claim: about 2 tablespoons (23 g), replacing saturated fat
The top of the range: at least 4 tablespoons, about 50 mL, inside a Mediterranean diet (PREDIMED)
Calories: 119 in a tablespoon

Bar chart of daily olive oil amounts in the research, in grams: Harvard cohorts more than 7, EU claim serving 20, FDA qualified claim 23, EUROLIVE trial 23, Moli-sani cohort more than 30, PREDIMED trial 45, with one tablespoon marked at 13.5 g and most blood marker trials at 20 to 25 g

Half a Tablespoon: Where the Big Cohorts Start

The largest studies watched what people already ate. Harvard pooled two long-running American cohorts and asked about diet every four years. Adults using over 7 g of olive oil a day had 19 percent lower all-cause mortality over 28 years than those who rarely used it. The same cutoff showed up for heart health. An earlier paper from those cohorts found 14 percent lower cardiovascular disease risk above half a tablespoon a day.

Seven grams is a small amount. It is a drizzle over a salad or a splash in the pan. The Harvard team also modeled a swap. People who replaced 10 g a day of butter, margarine, mayonnaise or dairy fat with olive oil had 8 to 34 percent lower mortality. The figure depended on which fat came out.

European cohorts measured larger amounts. Olive oil is a staple there. EPIC-Spain followed 40,622 adults for 13.4 years. Each extra 10 g a day, about three quarters of a tablespoon, went with 7 percent lower all-cause mortality. A second Spanish cohort of 12,161 adults split the oil by grade. The top third for virgin olive oil, around a tablespoon and a half a day, had 34 percent lower mortality. Refined olive oil showed no clear link.

In Italy, the Moli-sani study of 22,892 adults found 20 percent lower all-cause mortality in its highest group. Its tablespoon was a standard 10 g, so "more than three tablespoons" meant more than 30 g. In US measures, it comes to a little over two tablespoons.

Two Tablespoons: Where the Trials Settled

Trials assign the dose, so they show the amount researchers chose on purpose. Most chose something close to two tablespoons.

EUROLIVE gave 200 healthy men 25 mL a day of three olive oils that differed only in polyphenol content, three weeks per oil. HDL rose and oxidized LDL fell in step with the polyphenol number. Twenty-five mL weighs about 23 g, a little under two tablespoons.

That amount became a reference point. A review of 26 randomized trials comparing high and low polyphenol oils pooled trials that typically used 20 to 50 mL a day. A meta-analysis of 101,460 people measured its dose response in steps of 25 g. Each step went with 26 percent lower stroke risk in the cohort studies.

Smaller amounts have been tested at a single meal. One study of 25 adults served a lunch made with 10 g of extra virgin olive oil. Compared with the same lunch made with corn oil, it raised GLP-1 and lowered blood sugar after the meal. That result covers one meal and says nothing about daily use over months.

Four Tablespoons: The Top of the Range

The biggest trial used the most oil. PREDIMED assigned 7,447 Spanish adults at high heart risk to one of three diets. One group got about a liter of extra virgin olive oil a week, free. They were told to use at least 4 tablespoons a day. Over a median of 4.8 years, major cardiovascular events fell about 30 percent in that group compared with a low-fat control diet.

Within the same trial, each extra 10 g a day of extra virgin olive oil went with 10 percent lower cardiovascular disease risk. CORDIOPREV used the same four-tablespoon instruction for seven years in 1,002 patients with coronary disease. Major events came in 28 percent lower than on a low-fat diet.

Both trials changed a whole way of eating, with more vegetables, fish and legumes alongside the oil. Their results belong to the diet. Four Spanish tablespoons, about 50 mL, is also closer to three and a half US tablespoons.

What Regulators Name

Two agencies have put a daily amount in writing. In 2004 the FDA allowed a qualified health claim for olive oil with this wording: "Limited and not conclusive scientific evidence suggests that eating about 2 tablespoons (23 grams) of olive oil daily may reduce the risk of coronary heart disease due to the monounsaturated fat in olive oil." The claim also says olive oil should replace a similar amount of saturated fat. It should not raise total calories.

The FDA reached 23 g by working out how much olive oil supplies 17.5 g of monounsaturated fat. The exact figure is about 1.7 tablespoons, which the claim rounds to two.

European regulators came at it from the polyphenol side. The EFSA claim says olive oil polyphenols contribute to the protection of blood lipids from oxidative stress. It applies to oils with at least 5 mg of hydroxytyrosol and its derivatives per 20 g. The label has to say the effect comes with 20 g a day. Twenty grams is about a tablespoon and a half.

The Same Spoonful, Different Bottles

The FDA figure is about fat. The EFSA figure is about polyphenols, and those vary from bottle to bottle far more than fat does. Extra virgin grading sets no polyphenol minimum, so two bottles with the same label can differ several times over.

The polyphenol ladder: six bars from never extra virgin at 0 to 50 mg/kg and supermarket extra virgin after a year on the shelf at 50 to 100, to the EU claim floor at 250, high phenolic at 500 and above (Olivea High Phenolic 587 by NMR) and ultra high phenolic at 1,000 and above (Olivea Ultra High Phenolic 1,046 by NMR)

An oil sitting right at the EU floor needs the full 20 g to reach 5 mg. Our High Phenolic oil, measured at 587 mg/kg, gets there in under two teaspoons. Our 1,046 mg/kg Ultra High Phenolic takes about a teaspoon. A typical supermarket bottle can need more than two tablespoons by our estimate. Our guide to high phenolic olive oil works through the label numbers, and the hydroxytyrosol dosage guide covers the compound in milligrams.

A tablespoon of a measured high phenolic oil covers the polyphenol serving with room to spare. Two tablespoons of it lands inside the trial range for fat as well.

The Studies Side by Side

Study	Design and size	Daily amount	In US tablespoons	What came back
Harvard cohorts (2022)	Observational, 92,383 adults, 28 years	More than 7 g	About half	19 percent lower all-cause mortality
EPIC-Spain (2012)	Observational, 40,622 adults, 13.4 years	Per 10 g step	About three quarters per step	7 percent lower all-cause mortality per step
Spanish grade cohort (2022)	Observational, 12,161 adults, 10.7 years	Top third for virgin olive oil	About 1.5	34 percent lower all-cause mortality; refined oil not significant
EUROLIVE (2006)	Randomized crossover, 200 men, 3 weeks per oil	25 mL	About 1.7	HDL up and oxidized LDL down as polyphenols rose
Moli-sani (2024)	Observational, 22,892 adults, 13.1 years	More than 30 g	A little over 2	20 percent lower all-cause mortality
PREDIMED (2018)	Randomized, 7,447 adults, 4.8 years	At least 50 mL, inside a whole diet	About 3.5	About 30 percent fewer major cardiovascular events

Tablespoons, Grams and Calories

A US tablespoon of olive oil weighs 13.5 g and carries 119 calories, the figure USDA lists. Every amount in the research converts from there.

Amount	Grams	Calories	Where it shows up
1 teaspoon	4.5	40	A drizzle on vegetables
Half a tablespoon	About 7	About 60	The Harvard cutoff
1 tablespoon	13.5	119	The everyday spoonful
1.5 tablespoons	20	About 177	The EU claim serving
25 mL	About 23	About 200	EUROLIVE, and the FDA claim
50 mL	About 45	About 400	The PREDIMED minimum

Watercolor illustration of golden olive oil pouring from a glass bottle into a small bowl beside a sprig of olive leaves

Calories are why the swap matters. In every study above, olive oil stood in for other fats. The FDA claim says so in its own words. Adding two tablespoons on top of an unchanged diet adds about 240 calories a day. Our olive oil calories guide has the full breakdown, and the butter to olive oil converter makes the swap in recipes.

How to Fit It Into a Day

Most people reach one to two tablespoons without measuring. A tablespoon in the pan for eggs and a tablespoon in a salad dressing covers it. Oil used for cooking still counts, and extra virgin olive oil handles everyday cooking temperatures well.

Some people prefer to take it by the spoon. A morning spoonful is the habit behind the olive oil shot. Our pieces on olive oil on an empty stomach and olive oil before bed cover timing. If the taste is strong, the lemon shot and ginger shot recipes soften it.

Start with a teaspoon if you plan to take it straight. A large amount on an empty stomach can loosen stools in some people, which our digestion article covers. Build up over a week or two. The olive oil calculator gives a daily figure based on your own goals.

Can You Have Too Much?

No official upper limit exists for olive oil itself. The practical limit is calories, along with how much other food the oil pushes off the plate. PREDIMED participants were older adults at high heart risk. They used at least four tablespoons a day for years inside a full Mediterranean diet.

Past about two tablespoons, the research gives little reason to go higher for its own sake. Moving to a higher polyphenol oil raises the polyphenols per spoonful without adding calories. People managing a health condition or taking prescribed medication should talk to their doctor before making a large change to their diet.

Where Olivea Fits

We make two olive oils and a hydroxytyrosol capsule, and every figure is on our lab results page. Our Ultra High Phenolic Extra Virgin Olive Oil tested at 1,046 mg/kg by NMR and 20.92 mg of hydroxytyrosol and derivatives per 20 g. That works out to about 14 mg per US tablespoon.* Our High Phenolic Extra Virgin Olive Oil, the USDA Organic everyday bottle, tested at 587 mg/kg and 11.74 mg per 20 g, about 8 mg per tablespoon.*

Olivea Ultra High Phenolic olive oil pouring from the bottle into a ribbed stemmed glass, with the words polyphenols you can taste

Either one covers the EU polyphenol serving in a single tablespoon. Two tablespoons of either sits inside the trial range for the oil itself. For people who would rather not take oil by the spoon, the capsule carries a lab-verified 23.5 mg of isolated hydroxytyrosol in a few calories. The oil counts the whole hydroxytyrosol family and the capsule counts the isolated compound, so the two figures are different measures. For other bottles, we compare options in the best olive oil to drink daily.

*Per tablespoon figures are derived from the lab results per 20 g, at 13.5 g per US tablespoon.

Frequently Asked Questions

How much olive oil should you have a day?

Most of the research used between half a tablespoon and four tablespoons a day. Trials measuring blood markers mostly used 20 to 25 g, about one and a half to two tablespoons. The FDA's qualified claim names about 2 tablespoons in place of saturated fat. For most people, 1 to 2 tablespoons a day of a high polyphenol extra virgin oil, used instead of other fats, fits that range.

Is 2 tablespoons of olive oil a day too much?

Two tablespoons sits in the middle of the research. EUROLIVE used 25 mL, a little under two tablespoons, and PREDIMED told participants to use at least four. The main cost is about 240 calories. The studies and the FDA claim both treat olive oil as a swap for other fats.

Is 1 tablespoon of olive oil a day enough?

One tablespoon clears the lowest amount linked to lower mortality, which Harvard put at more than 7 g a day. It falls a little short of the 20 g EU serving, so the polyphenol content of the bottle matters. Our High Phenolic oil, measured at 587 mg/kg, covers the 5 mg EU polyphenol serving in a single tablespoon.

How many calories are in 2 tablespoons of olive oil?

About 238. USDA lists 119 calories in one US tablespoon, which weighs 13.5 g. The EU claim serving of 20 g is about 177 calories, and the PREDIMED minimum of about 50 mL comes to roughly 400. Olive oil is almost entirely fat, so the calories add up quickly when it goes on top of a diet instead of replacing something.

How much olive oil did the Mediterranean diet trials use?

PREDIMED and CORDIOPREV both told participants to use at least four tablespoons a day, about 50 mL. PREDIMED supplied about a liter of extra virgin olive oil a week to each participant. Both trials changed the whole diet, adding vegetables, fish and legumes. Their results describe the Mediterranean diet as a whole pattern.

Does the type of olive oil change how much you need?

For polyphenols, yes. An oil at the EU floor needs the full 20 g to reach 5 mg of hydroxytyrosol and derivatives. Our 1,046 mg/kg oil gets there in about a teaspoon. A Spanish cohort of 12,161 adults also found lower mortality with virgin olive oil and no clear link for refined, which carries far fewer polyphenols.

If You Skip Everything Else

The research on olive oil runs from half a tablespoon to four tablespoons a day. Harvard linked more than 7 g a day to 19 percent lower mortality over 28 years. Most trials of blood markers used 20 to 25 g, and the FDA's qualified claim names about 2 tablespoons. PREDIMED went highest at about 50 mL inside a full Mediterranean diet. In every case olive oil replaced other fats, and a tablespoon carries 119 calories. The bottle matters too. A high phenolic oil covers the EU polyphenol serving in one tablespoon, and a typical supermarket oil can need two or more. One to two tablespoons a day of a measured extra virgin oil, used in place of butter or margarine, sits inside the research.

This article is educational and is not medical advice. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Talk to your doctor before changing your diet or supplement routine, particularly if you are managing a diagnosed condition or taking prescribed medication.