Hydrogenated oils are fats that have been chemically altered by adding hydrogen to liquid vegetable oils. This process makes the oils more solid at room temperature, which helps improve their shelf life and stability in food products. Common sources of hydrogenated oils include soybean oil, canola oil, and palm oil. These oils are often found in processed foods, such as baked goods, margarine, and snack items. While they can enhance texture and flavor, hydrogenated oils can also contain trans fats, which are linked to health issues like heart disease. As a result, many health organizations recommend limiting their consumption.