Half a tablespoon of olive oil a day. That’s it.
Not a supplement. Not a $80 “brain tonic.” Just the stuff you drizzle on tomatoes.
A 2024 Harvard study followed 92,000 people for 28 years. Those who ate more than 7 grams of olive oil a day — about half a tablespoon — had a 28% lower risk of dying from dementia than people who almost never used it. And no, it wasn’t just because they already ate “healthy.” The link held even after researchers accounted for overall diet quality.
Same kitchen staple already has a resume:
Heart: extra-virgin olive oil is a star of the Mediterranean diet. Big trials found fewer heart attacks and strokes when people used it as their main fat.
Inflammation: good EVOO has polyphenols, including oleocanthal — the compound that makes your throat tingle. This is how you know it’s a good olive oil.
Metabolism: better cholesterol profile, happier blood vessels, less oxidized LDL.
*Important fine print, because science is not a smoothie ad: this was an observational study. It does not prove olive oil prevents dementia.
The science keeps pouring in. It is one of the simplest food swaps we have, with unusually consistent evidence.
Tip: buy extra virgin. If it tastes like nothing, it probably does nothing special. Choose one that leaves you with a peppery feeling in the back of your throat. Swap for butter, margarine, and mayo. Cook with it. Finish salads with it.
Your heart likes it. ❤️ Your brain does too. Your food definitely will.