Health experts say trans fats are worse for the heart than saturated fats. In 2015, the Food and Drug Administration decided that trans fats were no longer safe, imposing a three-year time limit on their removal, and the World Health Organization just launched an effort to ban trans fats globally by 2023. AdvertisementAdvertisementEven though food companies had three years to come up with replacements for trans fats, and 98 percent of them have been removed from our food, not all trans fats are gone. These foods contain small amounts of trans fats, and scientists are still researching whether natural trans fats are as bad for you as man-made ones. Replacements for trans fats include vegetable oils like canola, corn, soy and olive, and plant fibers and oats.