Why do so many people die of cancer? Is the word cancer really that scary?

The cancer doctor pointed out that the cause of cancer is that the normal cells of the body become cancerous under the action of environmental pollution, chemical pollution (chemical toxins), ionizing radiation, free radical toxins and microorganisms (bacteria, fungi, viruses, etc.). ) and its metabolic toxins, genetic characteristics, endocrine disorders, immune dysfunction and other carcinogens, often manifested as: local mass formed by abnormal proliferation of local tissues and cells. Cancer is a kind of disease caused by many reasons, stages and normal cell mutation in the body. The characteristics of cancer cells are: unlimited and endless proliferation, so that a large number of nutrients in patients are consumed; Cancer cells release a variety of toxins, causing a series of symptoms; Cancer cells can also spread to all parts of the body for growth and reproduction, leading to emaciation, weakness, anemia, loss of appetite, fever and serious organ function damage. In contrast, there are benign tumors, which are easy to be removed, generally do not metastasize or recur, and only have squeezing and blocking effects on organs and tissues. However, cancer (malignant tumor) can also destroy the structure and function of tissues and organs, causing necrosis, bleeding and infection, and patients eventually die of organ failure. Traditional Chinese medicine in China is extensive and profound. As early as about 3,500 years ago in the Yin and Zhou Dynasties, the name of "tumor" was recorded in the Oracle Bone Inscriptions of Yin Ruins. The word consists of "qi" and "six", which shows that there was a pathological understanding of the disease at that time. Cancer belongs to the category of "abdominal mass", "accumulation" and "choking diaphragm" in Chinese medicine in China. Hua Tuo pointed out in the Han-Zang Sutra: "The actions of carbuncle, carbuncle, sore and swelling are not only caused by the accumulation of poison in the five internal organs, but also by Wei Rong's blood stasis. Zhang Zhongjing further developed the distinction between clinical manifestations and prognosis of tumor and non-tumor in difficult classics in the Eastern Han Dynasty. It is also a visceral disease that gets together. Sometimes, when they attack, they will feel pain and move, which can be treated "..."; The Theory of Etiology written by Chao in Sui Dynasty not only recorded a variety of tumor diseases and symptoms such as lump, choking, nausea and tumor, but also discussed the etiology and pathogenesis and recorded the operation method of "suture has its own method". Edit the symptoms in this paragraph (1): unexplained emaciation, weakness, irregular pain in the upper abdomen, loss of appetite, especially anorexia to meat. (2) Non-pregnant and lactating women have pus on their nipples or can squeeze out juice. Picture of cancer cell (3) A gradually enlarged lump appears in any part of the body, such as breast, neck or abdomen. (4) Dry cough, bloody sputum, chest tightness and chest pain, which can't be cured for a long time. (5) Women over middle age have a small amount of vaginal bleeding after sexual intercourse, or irregular vaginal bleeding at ordinary times, or menstrual cramps after menopause for several years, and leucorrhea increases significantly. (6) Jaundice gradually deepened, with a mass in the upper abdomen and no abdominal pain. (7) The liver swells rapidly, accompanied by pain in the liver area. (8) Painless hematuria of unknown cause. (9) Skin ulceration cannot heal for a long time. (10) The nevus suddenly enlarged, accompanied by burning pain, ulceration, bleeding pain or alopecia on the nevus. (1 1) Recurrent fever and intractable tooth bleeding, subcutaneous bleeding and progressive anemia. (12) Recurrent unexplained high fever. (13) White spots appeared on oral mucosa, or female vulva or male penis glans, which expanded rapidly and felt itchy and uncomfortable. (14) Progressive weakness, paresthesia, dyskinesia or incontinence of both lower limbs. (15) Femoral and humeral fractures without obvious external force. (16) When eating and swallowing, there was a feeling of foreign body infarction, tingling or slow passage of food. (17) Nasal congestion, often with a small amount of nosebleeds or nosebleeds, accompanied by migraine, dizziness, tinnitus, and lymph node enlargement in the upper neck and lower earlobe. (18) The defecation habit changes, or diarrhea and constipation often appear alternately, or the stool often has pus and blood, or the stool becomes thin and flat. (19) Headache is getting worse and worse, accompanied by sudden and temporary visual impairment and vomiting. (20) Teenagers suffering from acute pain and swelling of elbow or knee joint can't be treated with antirheumatic drugs or antibiotics. Edit this paragraph to name cancer. Generally, it can also be named according to the organization source. Epithelial tissues are collectively referred to as "cancers", such as squamous cell carcinoma and adenocarcinoma. Mesenchymal tissue is called sarcoma, such as leiomyosarcoma and fibrosarcoma. A few tumors are not named according to the above principles. For example, some malignant tumors from immature tissues and nervous tissues are called blastomas, such as neuroblastoma, medulloblastoma and nephroblastoma. However, a few cases are benign, such as myoblastoma, chondroblastoma and osteoblastoma. Some malignant tumors, such as malignant teratoma, malignant meningioma, malignant neurilemmoma, etc. , because of its complex composition or habitual inheritance, is added before the tumor name. Some tumors have names, such as Ewing's tumor and Hodgkin's lymphoma. Or named after the shape of tumor cells, such as giant cell tumor of bone and oat cell carcinoma of lung. Editing this infection can be said with certainty that cancer is not contagious. Simply put, it is a disease that spreads from one person to another in some way. Infection must meet three conditions: source of infection, route of transmission and susceptible population, all of which are indispensable. Clinical data prove that cancer patients themselves are not the source of infection. Oncologists have done this experiment, and the cancer tissue taken from cancer patients can't live and grow directly on another person. Although it is believed that some cancers are related to some viruses, such as cervical cancer, nasopharyngeal carcinoma, leukemia, etc., it has not been confirmed that some viruses will definitely cause some cancers. At present, the World Health Organization has not listed cancer as an infectious disease, and cancer patients have not taken isolation measures like infectious diseases. The incidence of cancer among medical staff in cancer hospitals is not higher than that of the general population. Animal experiments have proved that cancer animals and healthy animals have been kept together for a long time, and no infection has been found after repeated observation and inspection. So everyone should understand that family and friends have cancer and don't have to worry about infection. Instead, we should spend more time with them and offer warmth and love, which will help patients recover soon. Why does metastatic cancer metastasize? The metastasis of cancer cells may be due to awakening dormant transcription factors related to embryonic development in the body. Generally speaking, the metastasis of cancer cells can be divided into several stages: the first stage is called invasion. At this stage, the epithelial cells of cancer cells will loosen the connection between cancer fine liver cells, so that cancer cells can "regain their freedom" and move to other places. The second stage is called infiltration, in which cancer cells enter the circulatory system through the endothelium of blood vessels or lymphatic vessels. The third stage is called extravasation. At this stage, survivors baptized by the circulatory system will pass through the endothelial cells of microvessels and reach other tissues. The final stage is that these cancer cells migrate to the new world, thrive in other tissues and form metastatic malignant tumors. The reason why cancer cells can metastasize may be that they wake up the genes that have been sleeping for a long time in the body and are responsible for the early development of embryos, thus starting the relevant procedures, thus gaining terrible metastatic ability. In the future, drugs may be developed to inhibit the expression of Twist and other genes and avoid tumor metastasis. Or by screening these genes, we can find the future trend of the tumor early and give corresponding treatment. Perhaps in the future, cancer will not be such a terrible scourge, but it may not become another chronic disease. The way of cancer metastasis Cancer cells are very greedy, and they will go anywhere they can, and there are three main ways: First, lymphatic metastasis is generally the earliest, so lymph node dissection should be carried out when tumor resection is carried out; Radiotherapy should not only irradiate the primary tumor focus, but also irradiate the peripheral lymph nodes according to the clinical manifestations of lung cancer. Lymphatic system is all over the body, which is the ideal first choice for cancer cell metastasis. Lymphatic metastasis often goes from near to far. For example, breast cancer first metastasized to the ipsilateral axillary lymph nodes, and then to the clavicle, axillary lymph nodes, and even the contralateral axillary lymph nodes. Second, cancer cells that directly invade blood vessels or enter blood vessels through lymphatic vessels will reach other parts such as lung, brain, liver and bone with blood flow. This is a blood transfer. Gastrointestinal cancer often metastasizes to liver and lung, breast cancer, renal cancer and osteosarcoma often metastasizes to lung, lung cancer easily metastasizes to brain, and prostate cancer easily metastasizes to bone. Chemotherapy is to prevent cancer cells from transferring through blood, and to eliminate cancer cells "along the way" with drugs. Third, there is another kind of transfer that is less, that is, planting transfer. Cancer cells fall off from the tumor surface and fall into the chest cavity, abdominal cavity and cerebrospinal fluid, which will "take root and sprout". It usually occurs in the lower part of these cavities, such as costal diaphragm angle, rectal bladder fossa, skull base and so on. There are always people who say that something causes cancer. In fact, we can't say that we won't get cancer as long as we don't eat anything, or that we will get cancer if we touch anything. At present, no factor has been found to be an inevitable factor in inducing cancer. The most important thing to overcome cancer is early detection, and most early cancers can be cured. To this end, first, regular physical examination, and second, if you feel uncomfortable, you should see that some symptoms may be related to cancer, and don't wait until you feel pain before seeing a doctor. There are four main types of cancers in this paragraph: cancers affecting skin, mucosa, glands and other organs; Hematological cancer, that is, cancer in the blood; Sarcoma, affecting muscles, connective tissue and bones; Lymphoma affects the lymphatic system. Common cancers include hematologic cancer's (leukemia), bone cancer, lymphoma (including lymphoma), intestinal cancer, liver cancer, gastric cancer, pelvic cancer (including uterine cancer and cervical cancer), lung cancer (including mediastinal cancer), brain cancer, nerve cancer, breast cancer, esophageal cancer, renal cancer and so on. The human body can kill cancer cells by suppressing the immune system, but when the anti-cancer ability in the human body is weakened or suppressed, cancer cells will continue to proliferate and form clinically visible cancer. Medical circles at home and abroad have confirmed that more than 80% ~ 90% of human cancers are related to external environmental factors, that is, physical, chemical and biological factors in human living environment are closely related to the occurrence of cancer. Adverse environmental damage will be buffered or resisted by the human body protection system, and its function can be eliminated or weakened. Cancer may occur when the carcinogenic factors are too strong or the cumulative effect is too large, the human immune function is insufficient or the body's repair function is insufficient. At present, the environmental pollution is becoming more and more serious, the living environment of human beings is getting worse and worse, and the contact with carcinogenic factors is getting closer and closer. The stability of human cells can only be relative, and the genetic changes of human cells are inevitable and inevitable, but this does not mean that cancer cannot be overcome, and there is nothing people can do about it. In fact, each of us has some cancer cells, but only a few cancer cells can develop into cancer. The vast majority of cancer cells are either eliminated by the body in time, or have no ability to divide independently, which will not endanger human health for a long time. With the progress and development of medicine and the deepening of cancer research, people have an unprecedented understanding of the causes of cancer, occupational tumors have been basically prevented, and some cancers of the general population have also been prevented and cured. Modern medicine has recognized that tumor and cancer are both genetic diseases, and all cells contain genes that can cause cancer, and these genes are passed down from generation to generation. However, under normal circumstances, they are in a state of inhibition. Only when the relevant regulatory mechanisms in cells are destroyed, oncogenes will "do evil" and lead to cancer. "Kinase" gene family includes more than 500 different genes. Their loss of function is a common cause of cancer. These genes, like switches, control cell growth, death and mutation. For cancer patients, many people will pay attention to their nutritional status, diet, living habits, age, living environment and so on. In fact, these are not very accurate. Whether you get sick or not is not only related to your usual living habits, but also closely related to everyone's genes. Some people have active oncogenes and are prone to cancer under the influence of the outside world. Accordingly, some people's DNA is easier to repair and the chances of getting cancer are relatively small. This explains why some people will get lung cancer if they smoke one cigarette every day, and some people will not get lung cancer if they smoke a lot every day. Cancer treatment often reminds people of chemotherapy. After chemotherapy once or twice, all the hair will fall out, and people's spirit will be poor. Some people will be swollen because of treatment. Chemotherapy is a very effective method for different cancers, but from the current research results, it is not suitable for everyone. Some people may not need chemotherapy, but they can achieve better curative effect by taking medicine or other methods, which can not only save a lot of medical expenses, but also minimize the pain of patients. "Gene Echocardiotherapy" regulates cell genes and has a unique therapeutic effect on cancer.