Trans fats are a type of unhealthy fat found in some processed foods. They are created when liquid oils are turned into solid fats through a process called hydrogenation. This makes foods like margarine and baked goods last longer on the shelf, but it also increases the risk of heart disease and other health problems. Many countries have started to limit or ban trans fats in food products due to their harmful effects. It's important to read labels and look for terms like "partially hydrogenated oils" to avoid these fats. Choosing healthier fats, such as those found in olive oil or avocados, can help maintain better heart health.