A common misconception about the roles of fats in a diet is that all fats are harmful. In reality, dietary fats are essential for various bodily functions, including energy storage, cell structure, and hormone production. Healthy fats—such as those found in avocados, nuts, and olive oil—play a crucial role in heart health and overall wellness. It's important to distinguish between saturated fats (which should be limited) and unsaturated fats (which should be included) for a balanced diet.