Most people are aware that eating too much trans-fat or saturated fat can lead to many cardiovascular problems, such as heart attack and heart disease. Although the avocado is high in fat, it is a great substitute for other fats because it is high in mono and polyunsaturated fats. Unsaturated fats are better for heart health. The avocado also provides almost 20 vitamins and minerals that can be very beneficial to your diet. One serving size of an avocado is one oz, or 1/5 of a large avocado. There is then roughly 5 servings within one avocado, each serving is 50 calories containing 35 calories from fat. Avocados can have multiple sizes so it can be difficult to say exactly how many calories are in each avocado. Even so, it can be said that each half has around 130 calories. Even though an avocado may be higher in calories it is a very nutrient dense food. This means that it has many benefits such as the vitamins and minerals that it contains for a relatively small amount of calories. The avocado is a great super food that works wonders when added to your diet.