A new study analyzed data from more than 92,000 participants over 28 years.

The participants were asked about their dietary patterns and olive oil consumption every four years.

However, this is an observational study that can identify associations but cannot determine cause and effect.

Photo illustration depicting olive oil and mortality risk. Older adult couple sitting side by site, holding hands and looking at one another. Olives and olive oil being poured into a dish. Dark blue background.

Photo Illustration by Michela Buttignol for Verywell Health; Getty Images

Eating an overall heart-healthy diet may contribute to decreasing ones risk for cognitive decline and dementia, Forner said.

2024;7(5):e2410021-e2410021.

American Heart Association.The link between heart health and brain health.

2023;12(11):e028527.