You cannot live without fats. Every cell membrane in your body is made of fat. Fats feed the brain, and many hormones are made with fat. What is important is what kind of fats you are eating. Avoid fried foods, hydrogenated and partially hydrogenated fats, and refined oils.Instead of these, try to use unrefined virgin olive oil or flax oil in your food. Avoid cheese and dairy in general. Unless your gallbladder was defective in some way, the reason you had it removed is more related to your eating habits, or the state of your liver. Your diet should be the same whether you have had your gallbladder removed or not. It is very important to maintain a diet that helps your liver digest fats properly and that helps the liver to do its job of filtering toxins. It is also important to give it the tools it needs to do its job, i.e. real nutrients, and to avoid piling up its workload by eating highly processed food, preservatives, bad fats, and other toxic foods.Avoid eating at fast-food restaurants, and ask about oils used even at good restaurants.