Most people before going to bed will often turn off the lights, but there are still many people who have the habit of turning on the light when sleeping.The cause is usually because they have psychological fear of darkness, not turning on the lights will not sleep.However, the light is only an external agent, but it will still have a certain effect on health while we are sleeping.

Why do someone like to turn on the light when going to bed?

According to research by the Center for Mental Health of Tay An at Shaanxi Medical University (China), the habit of liking to turn on the light when going to bed is psychological issues.The implementation of this for a long time leads to physical and mental dependence on light.

The pathological nature of the light -on -lamping witness comes from the fear of darkness dating back to childhood.Many people often think of the horror stories that they hear when they were young, or imagine scary things that appear at night or in the dark.And the only way to dispel fear is to turn on the light.In addition, people who are often in a state of stress, easy to have nightmares when going to bed also often feel safer when sleeping in light conditions.

Although the hobby of turning on the light when sleeping reflects psychological disorders and sleep, this can still be improved.Doctors recommend that it is necessary to change the habit soon to ensure a good night's sleep and good health after a hard working day.

The harmful effects of lighting lights when going to bed

In March 2022, researchers from the University of Northwestern (USA) published a research article in Pans magazine, showing that the light on the sleeping light was very harmful to human health.

The researchers chose 20 healthy people and divided them into two groups.The first group went to bed in a prestige in weak lighting environments and the second group in medium light environments.

After a while, the researchers found that when a person came into contact with stronger light when sleeping, the body would enter a higher alert state and his heart rate increased.Night hypertension at night can also adversely affect the heart health of that person.

At the same time, the researchers also unexpectedly found that the second test group had an increase in insulin resistance the next morning."Insulin resistance" is a cell condition that does not react with insulin, leading to glucose retained in the blood, leading to a number of diseases such as: Type 2 diabetes, pre -diabetes (glucose tolerance disorders), obesity, blood lipid disorders and hypertension.

In particular, for people aged 63 to 84, research shows that sleeping in long -term light will increase the risk of heart disease and diabetes much more.Therefore, to maintain a good health and prolong life, turn on the light when going to bed is one of the habits that we need to give up as soon as possible.

Change habits, improve sleep

Dr. Phyllis Zee, co -author of the senior author, Head of Sleep Medicine Department at Feinberg and is a doctor of Northwestern Medicine, said:"It is important for people to avoid or minimize the amount of contact with sleep during sleep."

He offered some tips to reduce light during sleep:

- Limit turning on the light when sleeping.If the lights are needed (older people may need to turn on for safety reasons), turn on the dim light and low light near the floor.

- Colors are also very important.Amber or red/orange lights are less stimulating the brain.Do not use white or blue light and lights away from the body while sleeping.

- People with shadow fear can start by reducing the intensity of light, instead of turning on the bedroom light with corridor lights, lights in the bathroom ...

- If during the day or in a state of unproving light, curtains or eye masks are a good choice.In addition, you can change the bed position so that the outside light does not shine straight into your face.

(According to Northwestern.edu)