Most people confuse an avocado as a vegetable when it's actually a fruit. Whether used in a salad or prepared as guacamole, avocado isn't just delicious -- it packs a mean nutritional punch. Avocados, which are low in calories, are rich in Vitamin E, Vitamin C, thiamine and riboflavin. Each of these health-enhancing properties provide a different benefit -- from converting carbs to glucose to fuel the brain and nervous system to enabling the body to release energy from proteins, carbs and fats. Avocados are high in monounsaturated fat, which has been shown to reduce cholesterol. When eaten with foods that contain fat-soluble nutrients like lutein, the avocado acts as a nutrient booster by helping the body absorb those important vitamins and minerals.