The harm of sleeping with the light on to children

Sleeping with the lights on has a great impact on children's health. Parents must pay attention to this aspect. Sleeping with the lights on will affect sleep and cause an increase in melatonin, which will have an adverse effect on children's health. Children may suffer from precocious puberty. In addition, because the lights are on, children often suffer from insomnia and sleep restlessly, which can easily have an adverse effect on their eyesight.

Hazard 1: Increased risk of cancer

Experts say that everyone has a pineal gland in 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.

Harm 2: Causes precocious puberty in children

Lingling, a 5-year-old girl, is smart and clever, but she is timid and afraid of the dark. She must turn on the lights when she goes to bed at night. Half a year ago, her mother noticed that Lingling's chest was a little bulging. At first she thought it was obesity, but soon she found that her breasts had become noticeably larger. After going to the hospital for a check-up, we found out that Lingling was suffering from precocious puberty. Ms. Feng was very puzzled. She was very careful in selecting the food for her child and had never given Lingling any supplements, so how could she have precocious puberty? After asking Lingling about her living habits, the doctor told her that the main factor for her child's precocious puberty might be excessive light exposure.

Hazard 3: It can easily cause eye diseases

The most critical point is that the eyes should not be stimulated by light during sleep, because light during sleep may affect children's ciliary muscles. Although the eyelids can block the light source when a person closes their eyes, if the artificial light source is too bright, the light will penetrate the eyelids and the eyes will become sensitive to light. As a result, the autonomic nervous system will not be able to allow the pupil to relax and rest, causing not only the ciliary muscle to be in a state of tension all the time, but other tissues controlled by the autonomic nervous system will also become tense.