Common misconceptions about dietary fats include the belief that all fats are unhealthy. In reality, unsaturated fats, found in foods like avocados and olive oil, are essential for heart health and brain function. Conversely, trans fats, often present in processed foods, should be avoided. Another misconception is that low-fat diets are the key to weight loss. However, healthy fats can promote feelings of fullness and help regulate metabolism. Understanding the difference between types of fats is crucial for making informed dietary choices.