Using olive oil instead of margarine, butter or other saturated fats may protect you from dying from cancer, cardiovascular and respiratory disease, dementia, and other conditions, according to a recent study.
How the study was conducted
The study analyzed the diets of people enrolled in two large government-funded studies: the Nurses’ Health Study and the Health Professionals Follow-up Study. Researchers then compared the diet findings to disease and death records for those people over time.
“This is the first long-term study, including more than 90,000 participants followed for up to 30 years, conducted in the American population on olive oil and mortality. ” Guasch-Ferre -study author a senior research scientist at the Harvard T.H. Chan School of Public Health..
The result: Men and women who replaced 2 teaspoons (10 grams) of margarine, butter, mayonnaise or dairy fat with the same amount of olive oil had up to a 34% lower overall risk of dying than people who ate little to no olive oil.
“Our results provide further support for recommendations to replace saturated fat and animal fat with unsaturated plant oils, such as olive oil, for the prevention of premature death,” she added.
People who reported eating the highest levels of olive oil had a 19% lower risk of dying from heart conditions, a 17% lower risk of dying from cancer, a 29% lower risk of dying from neurodegenerative disease, and an 18% lower risk of dying from respiratory disease mortality compared with those who never or rarely consumed olive oil.
“The takeaway is to use olive oil every time you can as a substitute for saturated fats when you’re cooking or in your salad dressings,” said LeWine, who was not involved in the study.
Both the study and editorial were published Monday in the Journal of the American College of Cardiology.
“It’s a combination of both decreasing the amount of saturated fat at the same time you’re increasing the monounsaturated fats found in olive oil,” said Dr. Howard LeWine, the chief medical editor of Harvard Health Publishing, part of Harvard Medical School.
Healthy fat
The important finding from the study, Guasch-Ferre said, is the benefit of replacing unhealthier fats such as butter and full-fat dairy and mayonnaise with olive oil for cooking, dressing and baking, similar to other Mediterranean populations.
No scientific evidence supports the notion that eating more olive oil is associated with weight gain. In some studies olive oil could probably increase satiety and fullness.
Beloved in the Mediterranean
Olive oil, or “laderá” in Greek, is a key staple in the award-winning Mediterranean diet, which studies have shown can reduce the risk for diabetes, high cholesterol, dementia, memory loss, depression and breast cancer.

The diet, which is more of an eating style than a restricted diet, has also been linked to stronger bones, a healthier heart and longer life.
While the Mediterranean way of eating is based on traditional foods from the 21 countries that surround the Mediterranean Sea, it revolves around a fundamental theme.
The focus is on simple, plant-based cooking, featuring fresh vegetables and fruits, whole grains, beans, seeds and nuts, and a heavy emphasis on extra virgin olive oil.
But food is not the only focus of the Mediterranean approach, which recently topped the 2024 rankings for best diet for the fifth year in a row. It’s actually a lifestyle which also emphasizes movement such as walking, biking, gardening – as well as mindful eating and the social benefits of dining with friends and family.
Source: https://www.cnn.com/2022/01/10/health/olive-oil-benefits-wellness/index.html
An easy to follow way of eating as well. Nice article. Love olive oil and use it every day.
Thank you Dorothy! So happy you enjoyed the article!