What are the disadvantages of sleeping with the light on

Everyone has different living habits. Some people sleep with the lights on, while others sleep with the lights off. Sleeping with the lights on has its disadvantages, and sleeping with the lights off has its disadvantages. When making a specific choice, you should still make it based on your actual situation, so that you can get better results. So that these habits will not affect your normal physical health. So what are the disadvantages of sleeping with the lights on? Now let us introduce it to you.

A. It inhibits the secretion of melatonin

Everyone has a pineal gland inside their brain. One of the functions of the pineal gland is to secrete a large amount of melatonin when the human body enters a sleep state at night. Studies have found that melatonin is often secreted most actively between 11 p.m. and early morning the next day, and stops being secreted once light appears after daybreak. The secretion of melatonin can not only inhibit the excitability of the human sympathetic nerves, lower blood pressure and slow down the heartbeat, but also allow the heart to rest, thereby enhancing the body's immunity and eliminating fatigue.

As night falls, various complex lights will disrupt people's natural physiological rhythms and inhibit the pineal gland from secreting melatonin normally at night. Medical research has found that a normal person produces about 400 tumor cells in the body every day, and the body's immunity is what inhibits the occurrence of tumors. Without melatonin, the body's immunity will be reduced. The growth of cancer cells and the damage to their DNA will accelerate. As an antioxidant, melatonin can effectively protect DNA from damage caused by oxidation. However, once damaged, DNA may mutate and even become cancerous.

B. It is easy to cause "yin and yang imbalance"

From the perspective of traditional Chinese medicine, when a person is sleeping, the whole body and mind are in the process of repairing each other. When sleeping in a completely dark environment, the human body will produce melatonin and growth hormone, which can better repair and renew the body and mind. The human body needs the support of day and night to achieve a balance between yin and yang. When sleeping in the light, the overly bright light will make the body think it is still daytime, so the Yang energy will continue to circulate, causing meridian Qi disorder and making people easily tired. Therefore, sleeping with the lights on for a long time may cause neurasthenia, insomnia, and organ dysfunction at the mildest, and cancer and diabetes at the worst.

The above is an introduction to the disadvantages of sleeping with the lights on. After reading these introductions, you should still make appropriate adjustments based on your actual situation. This way, these lifestyle habits will not affect your normal physical health. If you have some bad habits in your life, you must correct them in time, otherwise it will affect your health.