As it’s virtually all fat, cold pressed olive oil is high in calories.
However, its main type of fat — unsaturated fat — is incredibly healthy
Compared with diets high in saturated fat, those high in unsaturated fat are associated with a reduced risk of heart disease, type 2 diabetes, cancer, and other chronic illnesses
Just 1 tablespoon (15 ml) of cold pressed olive oil supplies

Calories: 119
Total fat: 13.5 grams
Saturated fat: 2 grams
Monounsaturated fat: 10 grams
Polyunsaturated fat: 1.5 grams
Vitamin E: 12.9% of the Daily Value (DV)
Vitamin K: 6.8% of the DV
Cold pressed olive oil also contains at least 30 beneficial plant compounds, many of which are potent antioxidants with anti-inflammatory effects

The United States Department of Agriculture (USDA) recommends that you consume 20–35% of your calories from fat, mainly the unsaturated type.
Cold pressed olive oil comprises nearly all fat, with 71% coming from an unsaturated fat called oleic acid
Studies suggest that oleic acid and other unsaturated fats may help lower LDL (bad) cholesterol when used in place of saturated fats.
An additional 11% of the fat in cold pressed olive oil comes from omega-6 and omega-3 fatty acids. These two unsaturated fats are involved in major bodily processes, such as blood pressure regulation, blood clotting, and immune system response.
Although olive oil contains 2 grams of saturated fat per tablespoon (15 ml), this is well within the 13–22-gram daily limit recommended by most health authorities for a standard 2,000-calorie diet.

Since cold pressed olive oil isn't heated, it might have more antioxidants than inferior olive oils.
Your body is protected against unstable chemicals known as free radicals by antioxidants. In turn, this aids in preventing chronic diseases including cancer, diabetes, and heart disease.
Olive oil, an essential nutrient and strong antioxidant, contains 12.9% of the daily value (DV) for vitamin E per tablespoon (15 ml).
In animal and test-tube experiments, plant substances including hydroxytyrosol and oleuropein have shown to have strong antioxidant effects.
Researchers postulate that these substances may contribute to the Mediterranean diet's health advantages, such as stronger bones and a lower risk of heart disease, neurological disorders, and certain malignancies.

Prolonged, low-grade inflammation is believed to factor into many conditions, including heart disease, diabetes, cancer, arthritis, and Alzheimer’s disease.
Studies suggest that olive oil may help reduce inflammation due to its high concentration of healthy fats, antioxidants, and compounds like oleocanthal.
Oleocanthal is a natural anti-inflammatory agent. Test-tube studies indicate that it acts similarly to ibuprofen, an anti-inflammatory drug — although human studies are needed.
Remember that including more plant-based options in your diet may reduce inflammation more effectively than relying on a single compound, nutrient, or food.
Still, replacing foods high in saturated fat — such as butter, shortening, and lard — with cold pressed olive oil is an excellent place to start.

Heart disease is the leading cause of death among both men and women worldwide, responsible for over 17 million deaths each year.
Numerous studies reveal that replacing foods high in saturated fat with olive oil may help reduce high LDL (bad) cholesterol and blood pressure levels — two major risk factors for heart disease.
One study in over 84,000 women found that substituting 5% of saturated fats for foods high in monounsaturated fats, including olive oil, reduced heart disease risk by 15%.
The Mediterranean diet, which relies on olive oil as its main source of fat, has been shown to reduce your risk of heart attack and stroke by up to 28%.