If you keep the lights on in the room due to some fear while sleeping, know that this habit can lead to diabetes and heart disease.
The discovery was made in a medical study conducted in the United States.
Research from Northwestern University has shown that moderate light in a room during sleep impairs heart and vascular function, leading to increased insulin resistance the next morning.
According to research, glucose and cardiovascular regulation in such people is worse than those who sleep in the dark.
“We found that even mild light increases the activity of the autonomic nervous system, which increases heart rate and decreases insulin sensitivity,” the researchers said.
The study looked at glucose and heart rate in 20 people for 2 nights.
Ten of them were put to sleep in dim light, while the others were allowed to sleep one night in dim light and the next night in an environment where the light was like a cloud.
The results indicate that the levels of melatonin, a hormone that helps the body sleep, are similar in both groups.
But those who spent one night in mild light had higher insulin resistance the next morning, and their heart rate increased.
The researchers said that since we studied the healthy group for 2 nights, we were unable to say how important it is medically, but the change in insulin is a significant physiological change that changes the risk of diabetes. Can
There is already evidence that daylight increases heart rate, which prepares the body for day-to-day challenges.
“Our findings suggest that a similar effect may occur with light during nighttime sleep,” the researchers said.
Remember that the term insulin resistance is used when the cells in our muscles, fats, and liver fail to respond properly to insulin and use the blood glucose for energy.
When this happens, the pancreas begins to produce more insulin, which raises blood sugar levels over time.
To avoid these dangers, researchers say, keep the lights off during sleep and use very dim lighting if necessary.
Similarly, do not use white or blue for dim light but choose red or orange, similarly eye mask is also a good choice.
The results of the study were published in the medical journal Proceedings of the National Academy of Sciences.