In this era when money never sleeps, we often see all kinds of news of sudden death after staying up late. This makes friends who are used to staying up late fall into a deep panic. Then, many people asked questions on the clove doctor App: How harmful is staying up late? What are the hazards! ?

Today, Dr. Lilac will talk to you about the dangers of staying up late.

First, the risk of death has increased.

Lack of sleep and staying up late are often accompanied by long working hours and short rest time. Many studies in recent ten years have shown that the death risk of people who sleep for 5 hours or less is nearly twice that of people who sleep for 6-7 hours. The sleep time mentioned here is the continuous sleep time from night to the next morning, not the irregular fine sleep.

Second, the risk of heart disease and stroke increases.

Recently, it has been confirmed that staying up late can lead to the risk of heart disease and stroke. A famous paper published on 20 12 summarized the data of 2 million people in 34 large-scale studies. The results show that the risk of stroke increases by 5% and the risk of myocardial infarction increases by 23% among people who work at night. In Canada, 7% of myocardial infarction can be attributed to the contribution of night shift workers.

Another study shows that people who stay up late for a long time will have high blood pressure and heart rate regulation, and abnormal regulation of vasoconstriction and immune function: on the one hand, it increases the possibility of transient ischemia of the heart, on the other hand, it also increases the risk of coronary atherosclerosis and plaque instability, which may bring about myocardial infarction.

These two factors make fatal "malignant arrhythmia" more likely to occur, which eventually leads to sudden cardiac death.

Therefore, staying up late will increase the risk of sudden death, which is reasonable in theory and confirmed in population research, and should not be underestimated.

Third, anxiety and anxiety have increased.

Many people are uneasy about staying up late. They are often accompanied by great pressure and anxiety.

For example, a work study period is approaching, staying up late to catch up with work. Some people stay up late not for work, but because they have been distracted by what online shopping can or can't do, so as to relieve the pressure brought by business and delay the arrival of the pressure, but in the end there is no delay and they need to face more anxiety.

To paraphrase procrastination psychology, "We stay up all night in anxiety, stay up all night in anxiety, and stay up all night in anxiety." .

At the same time, staying up late itself may lead to anxiety and other problems. A study involving 10000 subjects found that people who lack sleep are five times more likely to suffer from depression and anxiety than normal people.

We have long known that stress and anxiety will greatly increase the risk of cardiovascular and cerebrovascular diseases and acute attacks. So staying up late and anxiety is a vicious circle, which will eventually lead to actual damage to health.

Fourth, the risk of cancer increases.

A study on breast cancer found that the risk of breast cancer among night shift workers will increase by 50%, while the risk of frequent jet lag will increase by 70%, which may be related to the low immune function caused by sleep cycle disorder. For example, people who stay up late often have oral ulcers, and oral ulcers are more common in people with low immune function.

The important function of immune system is immune monitoring of cancer cells. A normal immune system can eliminate most abnormally differentiated cells in time. When the immune monitoring function is weakened, there may be loopholes and increase the risk of cancer.

Five, staying up late for a long time makes people stupid.

20 14 a research survey evaluated more than 3,000 people in various industries who stayed up late in business for more than ten years. Half of these people who stay up late need to work shifts for more than 50 days a year.

The results show that these people's memory, reaction speed and overall cognitive ability have decreased significantly. Although they stop working shifts and enter a long-term normal routine, cognitive function problems can be recovered, but it will take at least five years. The risk of accidents at work is much higher than normal.

Six, sleep can not eliminate the harm.

Sleeping more after staying up late actually disrupts the normal physiological rhythm of the human body, because the biological clock of the human body is not adjusted whenever it wants, and it is closely related to illumination and habits.

Day and night light is transmitted to the supraoptic nucleus in the brain through vision, which is the biological clock of the human body. According to this, the supraoptic nucleus regulates various neurological and endocrine adjustments, including melatonin secreted by the pineal gland, to regulate the circadian rhythm of the whole body.

Staying up late is classified as "sleep phase delay syndrome" in sleep medicine, which is a kind of sleep cycle disorder. Others include jet lag, irregular sleep and non-24-hour cycle sleep.

Unless you can completely simulate the change of day and night light, staying up late will definitely disturb the biological clock. The health problems of shift workers (such as nurses, security personnel and service industries) are a good proof. Although they can have a rest after night shift, they are still a high-risk group of cardiovascular and cerebrovascular diseases and metabolic diseases.

Refer to Dr. Lilac's popular science article:

Lu Kexi News, a cardiac surgeon, is alert to the dangers of staying up late.

"When do you go to bed, do you stay up late? Author: Andrew Xu, Ph.D. in Neuroscience, Tsinghua University.