Can you get cancer if you stay up late? The news that Kai-fu Lee has cancer has aroused widespread concern. It is said that Kai-fu Lee got cancer because of staying up late and stress. Staying up late is very common in life, so many people can't help but ask, will staying up late get cancer? What's the harm of staying up late? Let's take a look together. The relationship between staying up late and cancer will increase the risk of cancer. In recent years, more and more research supports this argument. Women who have worked night shifts for many years are more likely to get breast cancer. Studies on men have found that men who work night shifts are more likely to develop prostate cancer. Researchers at Harvard University pointed out that frequent night shifts will increase the prevalence rate by 50%. The more night shifts, the higher the risk of illness. Among them, long-term exposure to artificial light is one of the causes of disease. Staying up late for a long time will reduce the immune function of the body and make people suffer from cancer, because cancer cells are formed by mutation during normal cell division, and at night, cell division is the most vigorous period, so it is difficult for the human body to control cell mutation and become cancer cells. At the same time, staying up late makes people's physiology in a state of tension. The secretion of various hormones in the body will be 50% higher than that of people who go to bed early and get up early. Excessive secretion of adrenaline and norepinephrine will cause blood vessels to contract by 50% compared with those who go to bed early and get up early, which will easily lead to an increase in blood pressure. People who stay up late often sit for a long time and seldom exercise, which leads to slow blood flow, more garbage in blood vessels and increased viscosity. According to the British "Independent" report, this study, jointly conducted by the National Cancer Institute and the National Institute of Environmental Health Sciences, provides "first-hand evidence" about the relationship between long-term exposure to artificial light and cancer. According to the report, a large number of studies show that professional women who need to work night shifts, such as nurses and flight attendants, have a maximum risk of breast cancer of 60%. In addition, research shows that women who stay up two or three days a week are also prone to breast cancer. Researchers believe that night lighting hinders the production of melatonin, which can inhibit the growth of cancer cells and enhance the immune system. Experts suggest that all lights should be turned off when sleeping, because sleeping in a dark room is beneficial to the production of neurotransmitter serotonin, which is very important for the production of melatonin; Try to keep 9 hours of sleep; Go for a walk outside after getting up in the morning. Scientists point out that working at night can also easily lead to heart disease, fatigue, depression and other cancers. As far as mortality is concerned, working at night for a long time is equivalent to smoking 20 cigarettes a day. So for the sake of health, we should stay up as little as possible and rest on time. Hazards of staying up late 1, dark circles and bags under the eyes: Night is the physiological rest time of human body. If there is no rest, the blood circulation around the eyes will be blocked due to excessive fatigue, resulting in dark circles, bags under the eyes or bloodshot eyes. 2, dry skin, long black spots, acne: 165438+ 0: 00 pm to 3: 00 am the next day is the beauty time, and it is also the time when the human meridians run to the gallbladder and liver meridians. If these two organs don't get enough rest, they will appear on the skin, which is prone to problems such as rough skin, yellow face, long black spots and acne. For those who are used to going to bed early, they should go to bed at 1 at the latest. And to make matters worse, staying up late for a long time will gradually lead to insomnia, forgetfulness, irritability, anxiety and other neurological and mental symptoms.