In recent years, the incidence of stomach cancer continues to rise, which is inseparable from our dietary structure and lifestyle. So, what are the hazards and adverse consequences caused by stomach cancer? The following is a detailed description of the possible adverse consequences of stomach cancer. What are the complications of stomach cancer? 1. Stomach cancer can cause anemia. As for why gastric cancer can cause anemia, many patients often visit the doctor because of emaciation, weakness and pallor, suspecting anemia, but careful examination reveals the existence of tumors in their bodies. Anemia and tumor, sometimes, can be incompatible and harmful to health. Similar situation is more likely to occur in the elderly population. This is because in addition to the reduced hematopoietic function of bone marrow, tumors also affect the bone marrow to different degrees. 2. Besides anemia, gastric cancer will also cause some other illnesses. When gastric cancer reaches advanced stage, it will affect the absorption of nutrients, or the tumor grows too fast and competes with the body for nutrients, and eventually anemia will appear. Commonly, such as lung cancer, laryngeal cancer, brain tumor, skin cancer, cervical cancer, etc. Various blood diseases, such as aplastic anemia (reblocking), leukemia, myelodysplastic syndrome, etc. These diseases often cause changes in hematopoietic function, insufficient cell production or accelerated cell destruction, etc. To get more information about diseases, you can search “Sunshine Health Academy” in the application market, download and install it, and get more knowledge about diseases at any time. 3.Bleeding is one of the more common adverse effects caused by stomach cancer. The reason why patients bleed is mainly because the local cancer foci of gastric cancer, due to rapid growth and insufficient blood supply, cause local cancer tissue to be ischemic and necrotic and fall off, and its supply blood vessels will rupture and bleed accordingly. If the blood vessel is thick, it will form heavy bleeding such as vomiting blood and black stool; if the blood vessel is thin and lasts for a long time, long-term chronic blood loss will occur. 4. The harm caused by gastric cancer also includes having cachexia, and if the disease is advanced, metastasis may occur. The deterioration of stomach cancer is usually very rapid, and its metastasis spreads very early and fast, and its prognosis is not good. Patients with gastric cancer are prone to pernicious anemia and cachexia. Stomach cancer is also prone to serious metastasis. Gastric cancer can metastasize through direct infiltration, implantation, lymphatic and hematologic routes, and can cause a series of complications. The metastatic sites of stomach cancer include intestine, esophagus, lung, liver, gallbladder, spine, brain and skull, etc. 5. Hidden pain in the abdomen is also one of the hazards caused by stomach cancer. In daily life, early gastric cancer patients mostly experience sudden upper abdominal vague pain, which is accompanied by some digestive diseases, such as indigestion and loss of appetite, which seriously affects the quality of life of patients.