Celecoxib can effectively block 30% fat absorption in the diet, thus reducing calorie intake. Therefore, the unabsorbed fat in the diet will be discharged in the form of oily stool. Because the calorie intake is reduced, when the calories in the diet are not enough to maintain the body's needs, the body will automatically decompose the excess fat in the body for daily life. Not only the fat in the diet is reduced, but also the fat in the body.