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why shouldn’t you have red led lights on at night kosoom Lighting Safety

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The main reasons for not recommending the use of red LED lights at night are as follows.

1. impact on human physiology

Red light at night can cause people to produce an alert state, affecting the quality of sleep, resulting in sleep deprivation and other problems. Red light will also make people produce stress and anxiety. This state is not good for health in the long term.
It excites the cerebral cortex, creating a state of alertness and excitement. Red light activates the pituitary-adrenal axis in the brain, releasing hormones such as adrenaline, which creates a sense of alertness and stress. This can make sleep difficult to fall asleep or sleep quality is reduced.
Affects melatonin secretion and disrupts circadian rhythms. Melatonin is an important hormone that promotes sleep and is secreted more before falling asleep. Red light will inhibit melatonin secretion, making it difficult to fall asleep, and long-term use will lead to disruption of the physiological circadian rhythm.
It may induce seizures. Red light stimulation can cause abnormal brain waves in some people, triggering seizures or seizure-like reactions, due to the visual fatigue and brain dysfunction caused by red light.

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Increased anxiety and feelings of stress. The physiological excitement and alertness brought on by red light can cause anxiety, tension and stress. Long-term in this state, excessive secretion of stress hormones, so that the body in a state of stress, ultimately detrimental to health.
Accelerate vision loss. The use of red light at night will cause the pupil to dilate, increasing the amount of light flowing into the eye, accelerating vision loss and the development of eye diseases, such as glaucoma, etc.

2. Impact on the biological clock

The body’s circadian rhythm will be affected by the light and regulation. Intense red light at night will interfere with the human biological clock, so that it is out of balance, not conducive to the next day’s work and study state.
The biological clock is regulated by light. The body’s circadian rhythm, sleep-wake cycle and other closely related to the biological clock. Biological clock will be synchronized according to the changes in ambient light and darkness adjustment. The use of red light at night will interfere with the biological clock’s perception of the real light environment, making it lose its normal rhythm.
Affects thermoregulation and hormone secretion cycle. The biological clock controls the body’s thermoregulatory and hormonal cycles, which vary significantly from day to night. Red light use will disrupt these cyclical changes, thus affecting the normal operation of the biological clock.

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3. damage to vision

Night exposure to intense red light, the pupil of the human eye dilated, easy to cause eye fatigue and damage. Long-term will accelerate the development of presbyopia, and even have a certain probability of causing glaucoma and other eye diseases.
Red light at night will make the pupil dilate, the amount of light incident in the eye increases. The strong light acts on the eyes for a long time, which will lead to overexcitation of the retina and optic nerve, resulting in visual fatigue, leading to dry eyes, soreness and other symptoms.
Red light has a high blue light component, and blue light can cause oxidative damage to retinal cells. The long-term accumulation of this damage can lead to vision loss and eye diseases. Such as age-related macular degeneration and glaucoma.
Red light can cause DNA damage and disruption of glucose metabolism in eye cells. Studies have shown that red light has carcinogenic and mutagenic effects on the eye and causes disruption of glucose metabolism, which is one of the mechanisms of vision loss and eye diseases.
Affects the production of visual substances. Red light can inhibit the production of visual substances, which is one of the reasons why long-term use of red light can lead to vision loss.
Red light promotes VEGF expression, which accelerates neovascularization and vascular leakage. In the eye, this can induce or aggravate jelly body retinopathy, macular edema and other ocular degeneration.
In summary, long-term or heavy use of red light, especially during sleep, can be harmful to vision and eye health. In addition to the work or physiological needs of the application of red light, in daily life should avoid excessive use of red light source for lighting. The use of soft yellow or white light can minimize the damage to vision.

4. Affect the sleep environment

Intense or harsh red light is difficult to ignore, its presence is easy to sleep before or during sleep to make people pay attention and wake up, seriously affecting the quality of sleep. This will also make the sleep partner is affected.

5. Safety risks

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Night vision loss. Strong lights make the pupils constrict, resulting in a reduction in the amount of vision, which will make people in the relative darkness of vision loss, the ability to judge the distance and direction is reduced, prone to collisions, falls and other accidents.
Attention distraction. Strong or blinding light is easy to attract attention, which will make people ignore the real environment around them, distracting, increasing the safety risks.
Light damage to others. Strong lights can also attract the attention of others around you, creating light hazards that can temporarily distract the eyes and attention of others, which also increases the probability of accidents.
Driving and behavior safety. Intense lighting can affect the vision, attention and judgment of drivers and pedestrians, which can have an impact on traffic and behavioral safety.
May trigger epilepsy. Intense and blinding lights may trigger seizures in some people, which is one of the reasons for the safety hazards associated with the use of such bright lights.
Strong LED lights, especially red light used at night, can produce certain safety hazards. It will make people in the dim environment of vision and attention, increasing the probability of accidents; will also lead to distraction of neighbors or pedestrians, creating a potential danger.
Therefore, unless used in an emergency, the use of red LED strip lights or lamps at night is not recommended. If necessary, you should also try to choose a soft red light, to avoid blinding and prolonged direct exposure to the human body, to avoid the above-mentioned problems or other adverse effects. The use of white or yellow light can be a better alternative.

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