One Avocado has 75% of its calories from fat. Is it good for you nonetheless? It appears so. People put on an avocado diet see a significant improvement in their cholesterol—probably in part due to its phytosterol content. Avocados are essentially cholesterol-free, something 71% of doctors surveyed don’t know, and contain monounsaturated (“good fats”), that may boost the absorption of fat-soluble nutrients.