So, does rice oatmeal cooked with rice also have weight loss effect? Because the calorie and carbohydrate content of rice is higher than oatmeal, if you want to lose weight through rice oatmeal, you should reduce the amount of rice or not make it bigger. The role of rice in porridge, rice and oatmeal is mainly to make porridge thicker and more delicious, so it is not a big problem not to make rice bigger.