To improve health, certain saturated fats and trans fats should be limited. Saturated fats, often found in red meat, full-fat dairy, and processed foods, can lead to increased cholesterol levels and a higher risk of heart disease. Trans fats, commonly found in fried and baked goods, are particularly harmful and associated with increased cardiovascular risks. Instead, individuals should focus on consuming healthier fats, such as those from nuts, seeds, avocados, and olive oil, to support overall health and well-being.