How much trans fat is recommended in the diet? Q: What is trans fat? Trans fat is a type of unsaturated fat that can be found naturally in small amounts in some animal products, but most trans fats are created through an industrial process that adds hydrogen to vegetable oil, making it solid at room temperature. Learn more about trans fat Q: Why is trans fat bad for us? Trans fats raise your bad (LDL) cholesterol levels and lower your good (HDL) cholesterol levels, increasing the risk of heart disease. They are also known to increase inflammation and insulin resistance…