This is a direct copy from Dr Fuhrman’s “Eat to Live Cookbook” and shows up yet another myth perpetuated by vested interest and poor science.
“No oil should be considered a health food. All oil, including olive oil, is 100 percent fat and contains 120 calories per tablespoon. Oil is high in calories, low in nutrients, and contains no fibre. Add a few tablespoons of oil to your salad or vegetable dish and you’ve added hundreds of wasted calories. It is the perfect food to help you put on unwanted and unhealthful pounds.
Oil is a processed food. When oil is chemically extracted from a whole food (such as olives, nuts, or seeds), it leaves behind (loses) the vast majority of micronutrients and becomes a fragmented food that contains little more than empty calories.
Foods rich in monounsaturated fats, like olive oil, are less harmful than foods full of saturated fats and trans fats, but being less harmful does not make them “healthful”. The beneficial effects of the Mediterranean diet are not due to the consumption of olive oil; they are due to antioxidant-rich foods, including vegetables, fruits, and beans, as well as lots of onions and garlic. Eating a lot of any kind of oil means you’re eating a lot of empty calories, which leads to excess weight and can also lead to diabetes, high blood pressure, stroke, heart disease, and many forms of cancer.
You can add a little bit of olive oil to your diet if you are thin and exercise a lot. However, the more oil you add, the more you are lowering the nutrient-per-calorie density of your diet, and that is not your objective, as it will not promote health and longevity”