Bowel cancer in advanced stage will cause body wasting, but apart from advanced bowel cancer, body wasting may also be caused by other reasons. When the malignant tumor disease of bowel cancer develops into advanced stage, it will lead to the symptoms of wasting due to the long-term nutritional digestion and absorption problems, besides, bowel cancer itself belongs to consumptive disease, so wasting is also a common symptom in advanced stage. However, wasting does not necessarily mean advanced stage of bowel cancer, because there are many other diseases besides bowel cancer that can cause wasting, and any disease that will lead to increased consumption of nutrient tissues in the body or decreased accumulation can cause wasting; wasting may also be congenital physical factors, which are not related to the disease; medication, psychological factors, and insufficient nutrient intake can also cause wasting. Simply relying on body wasting cannot judge whether bowel cancer occurs or not, and it is even impossible to judge to which stage the condition of patients with bowel cancer has developed; if one finds that one’s body has unexplained body wasting, accompanied by other discomforts, one should consult a doctor in time.