Do You Sleep With Lights On? Is Sleeping With Lights On Making You Sick?
From diabetes to depression—science says your night lamp could harm more than help.
Mumbai (Maharashtra) [India] April 30: In older times, people slept early as there were no electric lights. Villages in India would go quiet by 8 PM, with families using oil lamps just for a while. But now, our rooms are full of glowing lights—TV, chargers, alarm clocks, night lamps. This change in lifestyle is not natural. Doctors say this light exposure is confusing our body’s natural sleep clock, called the circadian rhythm.
How Light at Night Confuses the Brain
Our brain gets signals from the light around us. When it's dark, our body makes melatonin, a hormone that helps us sleep. But if your room has even a small night bulb, your body may stop making melatonin. This can make it hard for you to fall asleep. It also disturbs deep sleep, which is important for healing the body and mind. That is why experts ask to sleep in full darkness.
Health Problems Linked to Night Lights
You may not know, but many health problems are quietly linked to sleeping with lights on. Studies have shown that it can raise blood sugar levels, affect heart health, and increase stress hormones. Some scientists say it may even be related to weight gain and mood swings. In children, it can cause fear and weak sleep, leading to tiredness in school. A small light at night may do big harm.
The Link With Depression and Anxiety
Cities like Mumbai or Delhi never sleep, and so do many people. But this habit of bright nights is not good for the mind. Light pollution at night is connected to depression and anxiety. Our minds need proper rest in the dark to feel fresh the next day. Sleeping with lights on can keep the brain active even when the eyes are closed. This keeps the person tired and low all day.
How You Can Sleep Better From Tonight
Simple changes can save your health. First, switch off all lights and screens 30 minutes before sleeping. Use thick curtains if streetlights enter your room. If you feel scared in full darkness, use a dim red light. It affects melatonin less than blue or white light. Also, keep your phone away from your pillow. A healthy sleep in darkness can change your mornings, mood, and full-day energy.
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