Studies have found that the people who sleep with the lights on have lower immunity than those who turn off the lights, and are even more susceptible to malignant tumors. What is the reason for this? According to research reports, there is an organ in the human brain called the pineal gland, at night, after a person enters the sleeping state, it can secrete a lot of melatonin, and melatonin can inhibit the excitability of the human sympathetic nervous system, so that the blood pressure drops, the heart rate slows down, so that the heart to get the right amount of rest, to improve the human body's immune system, to eliminate the feeling of fatigue, and may even have the efficacy of killing cancer cells. However, as soon as the eye is stimulated by a light source, melatonin stops being secreted. So this is why sleeping in light conditions is not good for human health. This is also a reason why night shift workers usually have lower immune system.
So whatever the reason, please don't sleep with the light on, we need to do better for our own health.
Sleeping with the lights on at night is not good, to be divided into what situation, I personally think there is not much bad, if you often sleep with the lights on, as long as it is accustomed to, the brain does not have a little impact, it is just a little bit more costly electricity, as a child at night are sleeping with the lights on, and I have not seen where it is bad!
The first situation is that the girls are alone at home, timid is actually very afraid, turn off the lights to sleep, but because of the heart of the fear and insomnia, simply turn on the lights, the heart of the face of the ground, sleep can also be a lot of solid!
The second situation is that, before the lights are turned off to sleep, and occasionally turn on the lights to sleep, this will affect sleep, not only sleep is more difficult, the middle of the night hazy time would have been able to continue to sleep, but with the lights on will wake up, and when you can fall asleep again will depend on fate.
The third situation: there are children at home, the requirement must be open light sleep, I was a child, grandma and grandpa on the light, until I fell asleep in the quiet off, talking about the impact on the brain, it should be no, I miss my grandma, glad grandpa is still there!
I glanced at someone else's answer, and my God that's what melanin is again, and what precocious puberty is, which is so serious? Even if it is precocious puberty, compared to the hormones contained in what you eat, the difference is really far, alarmist, as for turning on the light that point of pigmentation, it is even more negligible, not what light can make melanin!
In life, some people like to open the light to sleep, many because of the feeling of sleeping at night with the light on the psychological sense of security, but also part of the people just in order not to touch the dark on the toilet, especially middle-aged and elderly people, at the same time there is a part of the people who just became a nanny and nanny, the need to take care of the children because of the night, and often choose to be accompanied by a small night light, but the fact is that sleeping with the light on is not only a waste of power but also the body! The first thing you need to do is to make sure that you have a good night's sleep!
First, sleeping with the lights on will reduce our immunity. Often stay up late why people will have low immunity, it is from a point of view to explain the night to sleep with the lights on, people live in a long time under the lights, the body's metabolism, our biological clock will be disrupted in this "light pressure", easy to lead to unstable temperature rise and fall, blood pressure, heart rate, pulse rate and other incongruities, affecting our The first thing you need to do is to get rid of the problem.
Secondly, turning on the light to sleep will inhibit the normal work of the pineal gland organ in our brain, which leads to more fatigue, and even more susceptible to cancer. Because the pineal gland in the brain when we sleep will secrete a kind of melatonin, and often late at night at 11 o'clock in the morning of the next day when the secretion of the most abundant, this melatonin can inhibit the sympathetic nervous excitement of our human body, so that the blood pressure drops, heartbeat slows down, can ensure that the heart to get a rest, we can eliminate fatigue, and even studies have shown that melatonin has a role in killing cancer cells, but the pineal gland has a role in the development of cancer cells. The role of the pineal gland, but the pineal gland has a characteristic, that is, once encountered light, will stop the secretion of melatonin!
Third, sleeping with the light on will increase the probability of myopia in children, because the light in long-term sleep will affect the ciliary muscle of their eyes;
Fourth, sleeping with the light on is not conducive to the growth and development of children, long-term in the light, on the contrary, it will affect the children's absorption of calcium, which will have a certain impact on the children's future elevation;
Fifth, the more some people turn on the light to sleep, the more likely to affect the quality of sleep, and lack of sleep will also affect the quality of sleep.
Fifth, the more people turn on the light to sleep, the more likely to affect the quality of sleep, and sleep deprivation will also affect the insulin sensitivity in our body.
Therefore, it is recommended that you try to sleep without lights. However, for the elderly or children at home, it is recommended to keep some night lights to prevent falls and accidents, as long as attention is paid to the choice of the right night light and the placement of the position can be!
The impact of sleeping with the lights on on the brain must be known to many people. There is a saying that after 11 o'clock in the middle of the night, there is no light, the human body falls asleep, the pineal gland of the brain will secrete a melatonin, which works to slow down the aging process and improve sleep.
When there is light exposure or when the sky is getting light, melatonin stops secreting, which is a characteristic of all mammals.
Melatonin's biggest role is to improve the quality of sleep, many insomniacs will be through a long time oral melatonin to improve insomnia, and sleep every day to light the lamp, basically will not secrete melatonin, in the long run, easy to trigger depression.
Melatonin has a tranquilizing effect, people in the process of sleep, melatonin continued secretion, the cerebral cortex will get enough rest, the nerves will be relaxed.
Highly tense nerves easily lead to a variety of diseases, the most terrible is depression.
Melatonin can enhance the body's immune ability, long-term melatonin deficiency will lead to reduced immunity, easy to cancer. Long-term studies in developed countries have found that people who frequently work night shifts have a risk of developing cancer that is twice as high as normal.
The study found that children before the age of 2 years, if they sleep with a light, especially especially especially bright, etc., is very likely to lead to myopia, the probability of 55%, and those who sleep in the dark, the probability of suffering from myopia is 10%.
Lighting to sleep will stimulate the eyes, there will also be a risk of cancer, so the best way is to install a night light, under the bed, the kind of induction, down to the ground naturally bright, no harm to the body, and the price is also cheap ~
Sleeping is the human body's way of relaxation, have a good night's sleep for many people is to enhance the body's functioning of the important measures. The dark environment in the room will allow some people to produce a certain degree of fear, at this time parents or I may choose to light a lamp, to ease their fear of darkness.
Lighting up a lamp eases your fear, but some people are wondering: Will sleeping with the light on at night affect your brain health?
Is it good for the brain to sleep with the light on at night?
Turning on the lights at night is mostly out of fear of the dark environment, urging us to light up. But lighting up at night actually has some effects on the human body.
1. First of all, the lights at night will make the tightly closed eyes still have a sense, it is difficult to enter the sleep state, even if it is into the sleep state, it is difficult to enter the depth of sleep, easy to be woken up by the outside world.
2. Secondly, sleeping with lights on at night may disrupt the sleep cycle. When people sleep, the brain will secrete a substance called melatonin, especially in the night 11:00 to 1:00 a.m. this period of time is the most vigorous. This substance reduces the body's sympathetic nervous system, lowers blood pressure, slows the heartbeat, strengthens the body's immune system and eliminates fatigue. But the secretion of melatonin pineal gland is a kind of light extra sensitive substances, once the light stimulates the pineal gland, will inhibit its secretion of melatonin, affecting the quality of sleep.
3. Finally, sleeping with the lights on at night may even affect your child's vision. The first thing you need to do is to get a good deal on your own, and you'll be able to get a good deal on your own, and you'll be able to get a good deal on your own, and you'll be able to get a good deal on your own. When a child is growing, the length of the eye axis is constantly increasing, and hormone levels in the body play a very important role. Turning on the lights at night will break the body's natural circadian law, so that the body's biological clock gene expression is out of control, resulting in the body's hormones such as dopamine, melatonin and other secretion of the imbalance of the eye axis continues to grow rapidly at night, resulting in a significant increase in the length of the eye axis, the number of deepening of myopia. This is not nonsense, according to many studies, those who sleep with the lights on before the age of 2 have a higher degree of myopia than those who do not turn on the lights. Some people may even be at greater risk for their own health because they turn on the lights at night.
In short, sleeping with the lights on has a certain impact on human health, we recommend that the night's sleep environment is best in the elimination of external light, after all, sleep in the dark environment has an important role in human health. In addition, healthy sleep should also ensure that the sleep time, it is recommended that elementary school students greater than ten hours or more, junior high school students greater than nine hours or more, high school students about eight hours to
Sunrise and sunset, the heritage of this old saying is not without reason, the person is normally in the night time sleep, the human brain is located in the mesencephalic thalamus and thalamus between the pineal gland will be secreted a large number of melatonin (this hormone is only produced in the dark night), the human brain is located in the mesolimbic thalamus and thalamus between melatonin (this hormone only). The melatonin has a calming and sleep-inducing effect on the brain.
For example, children who are exposed to too much light can reduce melatonin secretion, leading to precocious puberty. Women who work night shifts because of frequent night work will lead to a higher likelihood of breast cancer, and the longer the night shift, the greater the likelihood of breast cancer. This is because artificial light suppresses the body's production of melatonin, and lower levels of melatonin promote the production of estrogen. The counterexample to this problem, chicken farms is through the light to make chicks early.
The human body has its own rhythms, and if you have to break your own rules and turn on the lights when you sleep, some negative consequences will come slowly: affecting hormones, the immune system, increasing obesity, diabetes, depression, and even cancer.
So it's better not to sleep with the lights on.
I grew up sleeping alone with the lights on, and as long as I was sleeping alone, I was resting with the micro-light on, and I felt uneasy without the lights on, but the lights on did affect my sleep, and I got up in the morning a little bit groggy, and sleeping with the lights on was still damaging to my brain and body.
Sleeping with the lights on is not good for the brain.
The human body's biological clock is very strange, it will be autonomous to distinguish day or night to determine your sleep time. When night falls, the biological clock reminds you that it's time to go to sleep, which is how most people feel. Even if you fall asleep with the lights on, your subconscious, or body instinct, tells you that it's not nighttime and you don't need to sleep. This is the reason why most people don't sleep well with the lights on. Sleeping with the lights on for a long time, long-term people can not enter a deep sleep state, the brain is in a trance state, for the health of the body is very unfavorable.