Trans fats are created by pumping hydrogen into unsaturated fats such as soybean oil.
They're found in some margarines and spreads, and they're also added to some packaged foods.
These fats have been linked to inflammation, heart disease, insulin resistance and abdominal fat gain in observational and animal studies.
A 6-year study found that monkeys who ate a high-trans-fat diet gained 33% more abdominal fat than monkeys that ate a diet high in monounsaturated fat.
To help reduce belly fat and protect your health, read ingredient labels carefully and stay away from products that contain trans fats. These are often listed as "partially hydrogenated" fats.
