Olive Oil and Cholesterol: How It Affects Your Levels | LDL

Olive oil contains zero dietary cholesterol and can lower LDL only when it replaces saturated fats like butter, not when it’s added on top of them.

A tablespoon of olive oil carries 0 mg of cholesterol, which turns out to be the least useful number on the label.

The part that moves bloodwork is substitution. Trade the butter, lard, shortening, or cream in a meal for olive oil and the saturated fat in your day drops, and LDL cholesterol tends to follow. Pour the same oil over food that’s already heavy in those fats and the numbers barely budge. That distinction explains most of the fog around olive oil and cholesterol.

What follows is the trial evidence in plain numbers, the tablespoon breakdown, and the portion math that keeps a good habit from turning into a calorie surplus.

Does Olive Oil Lower LDL Cholesterol?

On its own, olive oil does not reliably lower LDL cholesterol. It helps when it replaces saturated fat, and the benefit comes from the swap rather than from anything unique to olives.

A dose-response meta-analysis of randomized trials in the British Journal of Nutrition put a number on it. Each additional 10 g of olive oil per day shifted LDL cholesterol by an average of +0.04 mg/dL, which is indistinguishable from no change. HDL rose 0.22 mg/dL, triglycerides 0.39 mg/dL, and total cholesterol 0.79 mg/dL. The authors rated that evidence low to very low certainty.

The same analysis found no meaningful lipid advantage for olive oil over other plant oils. A small subgroup comparing olive oil with butter hinted at a benefit, though it rested on very few trials.

A 2024 systematic review of randomized controlled trials landed in a similar place: mixed results, with many trials showing no significant change in total, LDL, or HDL cholesterol. The evidence keeps pointing at the dietary pattern rather than the bottle — a Mediterranean-style way of eating built on vegetables, beans, whole grains, and fish, with olive oil as the main fat.

Olive Oil And Cholesterol Levels: What The HDL Numbers Hide

An HDL rise of 0.22 mg/dL is what the meta-analysis averaged, and it says far less about heart risk than the size of that number suggests. How HDL particles work matters more than how many are circulating.

The gap between HDL quantity and HDL quality showed up in a PREDIMED-related study of 296 adults at high cardiovascular risk. A Mediterranean diet supplemented with roughly 4 tablespoons of virgin olive oil daily improved several HDL functions without significantly raising HDL levels — and it was the control diet, not the oil or nut diet, that lowered total and LDL cholesterol.

Extra virgin doesn’t guarantee a better lipid panel either. Extra-virgin olive oil brings polyphenols and other bioactive compounds, and no trial has shown those producing a consistent standalone LDL drop.

A randomized trial published in August 2024 compared high- and low-extra-virgin-olive-oil versions of a whole-food, plant-based diet. Both improved cardiometabolic markers, and LDL fell further on the low-olive-oil version. That trial tested complete diets, so it can’t be read as a verdict on olive oil by itself.

How To Use Olive Oil So It Helps

Treat olive oil as a replacement fat, measure it by the tablespoon, and judge the result with a full lipid panel — LDL, HDL, triglycerides, and total cholesterol — instead of watching one number.

• Swap, don’t stack. Use the oil where butter, lard, shortening, or cream-based sauce would have gone: roasted vegetables, beans, whole grains, fish.
• Count the tablespoons. At 119 calories each, 4 tablespoons is 476 calories before the food underneath them.
• Keep the rest of the pattern. The trials that showed benefit tested Mediterranean-style diets, not oil drizzled over a plate of fries.
• Stay on prescribed treatment. Elevated LDL, diabetes, established cardiovascular disease, familial hypercholesterolemia, or high triglycerides call for clinician-directed care, with diet changes added alongside it.

Bottles differ in flavor, harvest date, and price, and none of that changes the cholesterol math. If you want a starting point for the pantry, these tested olive oil picks for cholesterol cover what’s worth buying.