With the onset of the ninth month of winter and waves of strong cold air, there has been a surge in patients with gastrointestinal bleeding in hospitals. How can cold weather cause gastrointestinal bleeding? The cause of cold-induced gastrointestinal bleeding is still not very clear, expert analysis, may be due to the cold so that the body is in a “state of stress”, the body of a variety of hormone secretion imbalance, while the external cold stimulus prompted vasoconstriction, accelerating blood circulation, thereby increasing the intravascular pressure, increasing the risk of vascular rupture. The cold season is also prone to respiratory tract infections, manifested as coughing and coughing up sputum, which exacerbates the pressure in the thoracic and abdominal cavities, increasing vascular pressure and triggering gastrointestinal bleeding; in addition, it can also be related to injuries caused by bacteria and toxins, such as Helicobacter pylori, an important cause of peptic ulcers, whose activity is enhanced in the cold season, not only making peptic ulcers It is also easy to induce ulcer bleeding. Therefore, patients with previous gastrointestinal diseases, especially those with a history of upper gastrointestinal diseases, should not be ignored. What kind of people are prone to gastrointestinal bleeding? Cab drivers constitute a special occupational group because of their special working conditions, living environment, nutritional status and spiritual and cultural life, and their physical and mental health is directly related to people’s lives and safety. There was a large survey on the physiological and psychological conditions of cab drivers, the results show that the prevalence of gastrointestinal diseases among cab drivers is very high, the analysis of its causes and the nature of work and irregular life of cab drivers has a lot to do with. Epidemiological studies have shown that vibration and noise are harmful factors and that drivers have fatigue accumulation. Most cab drivers have irregular diet and living, and their normal habits are disrupted, which can easily induce digestive tract diseases. In addition, elderly people, with peptic ulcers and gastrointestinal diseases, are also at high risk of bleeding from digestive tract diseases. Disorders such as severe heart and lung diseases and stroke, as well as poisoning and trauma are suggested to cause stressful GI bleeding. Clinical symptoms of GI bleeding Gastrointestinal bleeding is an acute illness that can be life-threatening if left untreated. Patients with past history of gastrointestinal diseases must go to hospital as soon as they show symptoms such as black stool and blood vomiting (especially if they have not taken bismuth, charcoal powder or iron supplements for gastric diseases, colored Chinese medicine or animal blood recently, and then vomit coffee-like substance or black stool), which means that upper gastrointestinal tract bleeding has occurred, so as not to delay the disease. Since gastrointestinal bleeding is sometimes insidious, patients may make the mistake of thinking that they are dizzy because of high blood pressure or cold, and take antihypertensive drugs or cold medicine on their own, which makes gastrointestinal bleeding worse. Some patients with gastrointestinal bleeding also have symptoms of blood loss such as heartbeat and panic, especially those with a history of cardiovascular disease, and often think they are having a heart attack and take anticoagulants such as aspirin, which aggravates the bleeding. Therefore, for some middle-aged and elderly people suffering from cardiovascular disease will take anticoagulants such as aspirin for a long time and patients with rheumatism joint pain taking non-steroidal analgesic drugs for a long time, once the stomach is suitable or appear black stool, panic, weakness, must find a specialist consultation, to achieve timely medical treatment, to avoid delaying the disease, resulting in serious consequences. How to prevent gastrointestinal bleeding? Gastrointestinal bleeding is a typical psychosomatic disease. It is important to have a regular diet and life, a calm mind, an optimistic spirit, and avoid excessive stress and strain. To prevent gastrointestinal bleeding, first of all, maintain a good state of mind and optimistic mood. Strong mental stimulation, emotional excitement, excessive worry, anxiety and depression, as well as excessive fatigue and sleep deprivation can cause plant nerve dysfunction, which can trigger gastrointestinal bleeding. In addition, irregular diet, hunger and full meal, eating greasy, spicy, fried and cold food can also easily induce gastrointestinal bleeding. Especially in the winter season, due to the cold climate, people have a good appetite and eat greasy and spicy food, such as hot pot food and meat, which is extremely unfavorable to the original lesion of the digestive tract and can trigger the occurrence of gastrointestinal bleeding. In particular, the majority of friends should pay attention to the cold season, to keep the body warm; to eat more warm, soft, steamed food, more vegetables and fruits, light, easy to digest food, prohibit smoking and alcohol; usually pay attention to appropriate physical exercise, enhance physical fitness, weekend can be green travel, more legs and less mouth. Special attention should also be paid to the use of drugs that can trigger or aggravate the condition of gastrointestinal bleeding, such as: aspirin, reserpine, botrytisone, and corticosteroids, etc.