Imagine this:
You finish dinner, dim the lights, and prepare for sleep.
But your room is still glowing from your phone screen.
The television is on.
Streetlights shine through the window.
Notifications keep lighting up your screen.
To your brain, it may not feel like night at all.
This is the hidden effect of light pollution, the excessive use of artificial light after sunset that can interfere with the body’s natural biological rhythms.
Our bodies evolved to follow a simple pattern:
Light means it’s time to be awake.
Darkness means it’s time to rest and repair.
One of the key players in this process is melatonin, often called the “sleep hormone.”
As daylight fades, melatonin levels naturally rise, signaling to the body that it’s time to prepare for sleep.
However, exposure to bright artificial light particularly blue light from phones, tablets, laptops, and LED lights can delay this process by making the brain think it is still daytime.
As a result, many people experience:
- Difficulty falling asleep
- Poor sleep quality
- Feeling tired despite spending enough time in bed
- Increased daytime fatigue and dependence on caffeine
- Difficulty concentrating or feeling mentally refreshed
This doesn’t mean technology is harmful or that we should avoid artificial light completely.
The goal is balance.
Just as our bodies benefit from sunlight during the day, they also benefit from darkness in the evening.
Simple habits that can help:
- Reduce screen time close to bedtime.
- Use softer, warmer lighting in the evening.
- Keep your bedroom dark and comfortable for sleep.
- Spend time in natural daylight during the morning and daytime.
- Maintain a regular sleep schedule whenever possible.
Modern life has given us the ability to turn night into day.
But sometimes, the healthiest thing we can do is allow our bodies to experience something they have relied on for thousands of years:
Bright days and dark nights.
How often do you use your phone or other screens during the hour before bed? Could reducing that time improve your sleep?
MBH/PS