5. Trans fats
Trans fats are all around us - biscuits, candies, baked goods, chips, snacks, granola bars, breakfast cereals, pizzas, burgers - the list can be huge. They are formed when manufacturers turn liquid oils into solid fats, in a process called hydrogenation.
This increases the shelf life and flavor stability of foods. Many processed foods use Trans fats and a diet high in it is at a higher risk of getting cancer.