The Report of China University Students' Health Survey in 2020 shows that when do more than half of college students fall asleep? ()

According to the health survey report of college students in China in 2020, more than half of college students fall asleep after 12: 30.

Hazards of staying up late:

1, increasing the risk of breast cancer. Liu Depei, chief physician of the Department of Obstetrics and Gynecology, Nanjing Hospital of Integrated Traditional Chinese and Western Medicine, Jiangsu Province, said that long-term continuous exposure to artificial light and mental stress will interfere with the secretion of hormones in the human body, thus inhibiting the secretion of melatonin by the pineal gland of the brain and increasing the probability of cancer.

Chinese medicine believes that yang is weak and yin is cold at night. If you stay up late for a long time and don't pay attention to cold protection at night, it will increase the internal cold in the body and lead to breast cancer induced by blood deficiency.

2. Increase the risk of stomach cancer. Chen Yuqian, chief physician of the Department of Gastroenterology, said that the human gastrointestinal tract also needs rest to maintain itself. Staying up late will greatly reduce the effect of gastrointestinal rest, affect the ability of gastrointestinal repair and protection, and weaken gastrointestinal function.

In the long run, gastritis, gastric ulcer, gastric cancer and other diseases will follow. In addition, some people are used to eating late at night, which will increase the burden on the stomach and lead to stomach problems.

3, easy to be sad. Xing, deputy chief physician of the Department of Cardiology, said that sleep is closely related to arrhythmia, sick sinus syndrome, angina pectoris, heart failure and cardiogenic asthma.

During 4:00-7:00 in the morning, the excitability of human sympathetic nerve increases and cardiovascular activity is unstable. If you don't rest at this time, it is more likely to lead to myocardial ischemia, hypoxia, sudden angina pectoris and myocardial infarction.