The harms of night lights are endless.
Whether it's children afraid of the dark or adults who prefer to sleep with dim lighting, a nightlight has become a near-essential in many homes. However, according to experts, this habit isn't as innocent as we think. Research shows that leaving lights on during sleep disrupts the brain's biological rhythms and may even be linked to weight gain, depression, and cardiovascular disease.
THE BODY FORGETS THE NIGHTSleep experts state that the human body is programmed to rest in the dark. "Sleeping with a nightlight on sends a signal to the brain that it's still daytime. This, in turn, inhibits the secretion of the hormone melatonin. Melatonin both strengthens the immune system and rejuvenates the body. When the light remains on, the body skips this process," they summarize.
Studies show that there is a direct relationship between decreased melatonin production and premature aging, increased stress, and weakened immunity.
It affects heart rhythmA study conducted in the US found that people who slept in dim lighting throughout the night experienced disruptions in their heart rhythm and blood sugar levels. The subjects exposed to light during sleep were found to have higher heart rates and lower insulin sensitivity when they woke up in the morning. Experts say this could predispose them to cardiovascular disease in the long term.
IT'S HARMFUL TO CHILDREN TOOColored nightlights, frequently used in children's rooms, are also risky. Neurologists emphasize that blue and white light, in particular, negatively impact children's development: "Leaving light on while children sleep keeps their brain waves closer to wakefulness. This can lead to morning fatigue, attention deficit, and learning difficulties."
Experts recommend using low-intensity lights in red or amber tones if a completely dark environment is not possible in children's rooms.
Ophthalmologists point out that prolonged use of nightlights can increase retinal fatigue. The lens of the eye becomes more sensitive to light, especially with age. Dry eyes, stinging sensations, and morning blurring are more common in people who frequently sleep in dim light.
4 golden suggestions from expertsSleep in complete darkness: Sleeping without light regulates the biological clock.
-Pay attention to curtain selection: If street lights enter the room, use thick roller blinds.
-Avoid blue light lamps: The most harmful type of light is blue tones.
-Use a timer if necessary: In children's rooms, choose systems that automatically turn off the lights 15-20 minutes after they fall asleep.
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