Whether sleeping with the lights on affects health depends mainly on the individual's sensitivity to light and the need for quality sleep. Here are some relevant considerations:
1.Effects of light: Light can affect the body's biological clock and sleep hormone secretion, especially blue light (e.g. from electronic devices or white LED lights). Blue light inhibits the secretion of melatonin, a hormone that helps us fall asleep. As a result, excessive exposure to bright blue light before bed may cause difficulty falling asleep or disrupt sleep quality.
2.Sleep environment: For most people, a dark environment helps to fall asleep better and stay asleep. Sleeping with the lights on may interfere with sleep by causing ambient noise, visual stimuli, or discomfort.
3.Individual differences: Everyone has different levels of sensitivity to light and sleep needs. Some people may be Xi falling asleep in a slightly lit environment, while for others, a completely dark environment is more suitable for falling asleep.
To sum up, sleeping with the lights on may have a certain impact on sleep, especially if the light is too strong and there is too much blue light. If you find that sleeping with the lights on is affecting your sleep quality, you can consider the following suggestions to improve your sleeping environment:
Use blackout curtains or blindfolds to keep the room relatively dark.
Avoid using electronic devices (e.g., cell phones, tablets) and exposing yourself to large amounts of blue light before bedtime.
Use soft, warm-toned lighting as an alternative to reduce sleep disturbances.
Everyone's body and health are different, so decide whether or not to turn on the lights while sleeping according to your needs and feelings. If you have long-term sleep problems or have concerns about sleep quality, it is advisable to consult a doctor or professional.