Of course it will be fat. When the stomach is cold, the body will automatically produce fat to keep the stomach warm. So it is recommended to eat some hot food, such as ginger and garlic. Eat less cold food, such as milk, cold drinks and fruits. Eating less fruit won't lack vitamins, which can be obtained in staple food. If you must drink milk, you'd better cook it with ginger. Yogurt can be drunk directly.