That's right in the sweet spot — 25–30ml is roughly 2 tablespoons, which is the dose most of the good research is built around.
Here's what it does mechanistically. The monounsaturated fat (oleic acid) shifts your cholesterol profile: it nudges LDL down and helps maintain HDL, and it makes LDL particles less prone to oxidation — oxidized LDL is what actually sticks to artery walls and forms plaque. The polyphenols, which your unfiltered bottle is especially rich in, reduce inflammation and improve endothelial function, meaning your blood vessels dilate and respond better. There's also a modest blood pressure lowering effect that shows up in trials within weeks.
The durable payoff is where it gets impressive. The PREDIMED trial — one of the biggest diet trials ever run — found that people on a Mediterranean diet with added extra virgin olive oil had about a 30% reduction in major cardiovascular events (heart attack, stroke) over roughly five years. Observational data suggests even half a tablespoon a day is linked to meaningfully lower heart disease risk versus none.
Two practical notes. First, the benefit is strongest when olive oil *replaces* butter, ghee, or margarine rather than being added on top of them — swapping, not stacking, is what moves the needle. Second, it's about 240–270 calories for that 30ml, so it's not free; fold it into your cooking, salads, and dipping rather than treating it as a supplement to drink.
Do that daily with the bottle you bought and you're doing one of the most evidence-backed things possible for your heart.