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The science behind circadian lighting

Posted on April 24, 2023 By Supreme Light Solutions

When it comes to lighting our homes, we often think about the practicalities of seeing what we need to see. But did you know that lighting can also have a significant impact on our health and well-being? Specifically, circadian lighting is a type of lighting that has been shown to have a positive effect on our internal body clocks, which can improve our sleep quality, mood, and overall health.

In this article, we'll explore the science behind circadian lighting and how it can benefit you and your family.

What is Circadian Lighting?

Circadian lighting is a type of lighting that mimics the natural changes in light that occur throughout the day. Our bodies are designed to respond to these changes in light, which help regulate our internal body clocks. When we're exposed to bright, blue light in the morning, for example, it signals our bodies to wake up and start the day. When the sun sets and the light becomes warmer and dimmer, it signals our bodies to start winding down for sleep.

Unfortunately, many of us spend the majority of our days indoors, exposed to artificial lighting that doesn't mimic these natural changes in light. This can throw off our internal body clocks, leading to poor sleep quality, mood swings, and even health problems.

Circadian lighting seeks to address this issue by providing lighting that changes throughout the day, mimicking the natural changes in light that occur outside. This can help regulate our internal body clocks, leading to improved sleep quality, mood, and overall health.

How Does Circadian Lighting Work?

Circadian lighting works by providing different colors and intensities of light throughout the day. In the morning, the light is bright and blue, which signals our bodies to wake up and start the day. As the day progresses, the light becomes warmer and dimmer, which signals our bodies to start winding down for sleep.

One of the key components of circadian lighting is the use of blue light in the morning. Blue light has been shown to be particularly effective at regulating our internal body clocks, as it suppresses the production of melatonin, a hormone that makes us feel sleepy. By exposing ourselves to bright, blue light in the morning, we can help reset our internal body clocks and feel more alert and awake throughout the day.

In the evening, circadian lighting shifts to warmer, dimmer light. This is because warmer light has less blue light in it, which allows our bodies to start producing melatonin and prepare for sleep. By using warmer, dimmer light in the evening, we can help promote better sleep quality and improve our overall health and well-being.

The Benefits of Circadian Lighting

So, what are the benefits of circadian lighting? Here are just a few:

1. Improved Sleep Quality

One of the most significant benefits of circadian lighting is improved sleep quality. By regulating our internal body clocks, circadian lighting can help us fall asleep more easily and stay asleep throughout the night. This can lead to better overall health, as sleep is essential for our bodies to repair and regenerate.

2. Better Mood and Energy Levels

Circadian lighting can also help improve our mood and energy levels. By exposing ourselves to bright, blue light in the morning, we can feel more alert and awake throughout the day. This can lead to increased productivity and a better overall mood.

3. Reduced Risk of Health Problems

Research has shown that circadian lighting may also help reduce the risk of health problems such as obesity, diabetes, and cardiovascular disease. This is because our internal body clocks play a significant role in regulating our metabolism and other bodily functions. By keeping our internal body clocks in sync with the natural changes in light, we can help promote better overall health.

How to Implement Circadian Lighting in Your Home

Implementing circadian lighting in your home is relatively easy. Here are a few tips to get you started:

1. Use Bright, Blue Light in the Morning

Start your day off with bright, blue light. This can be achieved by opening your curtains or using a light therapy lamp. You can also install circadian lighting fixtures that automatically adjust the color and intensity of the light throughout the day.

2. Use Warmer, Dimmer Light in the Evening

In the evening, switch to warmer, dimmer light. This can be achieved by using lamps with warm-colored bulbs or installing circadian lighting fixtures that automatically adjust the color and intensity of the light.

3. Avoid Blue Light Before Bed

Finally, avoid exposure to bright, blue light in the evening, as it can interfere with your body's production of melatonin and make it harder to fall asleep. This means avoiding electronic devices such as smartphones and tablets, which emit a lot of blue light. You can also install apps that filter out blue light or use glasses that block blue light.

The Science Behind Circadian Lighting

To understand why circadian lighting is so effective, it's essential to understand the science behind our internal body clocks.

Our internal body clocks, also known as our circadian rhythms, are controlled by a part of our brain called the suprachiasmatic nucleus (SCN). The SCN is located in the hypothalamus and receives input from the retina in our eyes. When the retina detects light, it sends a signal to the SCN, which then sends signals to other parts of the brain and body, regulating our internal body clocks.

One of the key ways that the SCN regulates our internal body clocks is through the production of melatonin. Melatonin is a hormone that is produced by the pineal gland in the brain and is responsible for making us feel sleepy. Melatonin production is regulated by the SCN, which signals the pineal gland to produce more or less melatonin depending on the time of day.

When we're exposed to bright, blue light in the morning, it suppresses the production of melatonin, helping us feel more alert and awake. As the day progresses, the SCN signals the pineal gland to start producing more melatonin, which helps us prepare for sleep.

The Impact of Artificial Lighting on Our Internal Body Clocks

Unfortunately, many of us spend the majority of our days indoors, exposed to artificial lighting that doesn't mimic the natural changes in light that occur outside. This can throw off our internal body clocks, leading to a variety of health problems.

For example, research has shown that exposure to artificial light at night can interfere with our internal body clocks and make it harder to fall asleep. This is because the blue light emitted by electronic devices such as smartphones and tablets can suppress the production of melatonin, making it harder for us to feel sleepy.

Similarly, exposure to bright, blue light in the evening can also interfere with our internal body clocks. This is because our bodies are designed to wind down as the day progresses, and exposure to bright, blue light can signal our bodies to stay awake and alert, leading to poor sleep quality and mood swings.

The Benefits of Natural Light

In addition to circadian lighting, exposure to natural light can also have a significant impact on our health and well-being. Natural light contains a full spectrum of colors and intensities, which help regulate our internal body clocks and promote better overall health.

Research has shown that exposure to natural light can help regulate our internal body clocks and improve our sleep quality. This is because natural light contains a lot of blue light in the morning, which helps us feel more alert and awake, and less blue light in the evening, which helps us wind down for sleep.

In addition to improving our sleep quality, exposure to natural light can also improve our mood and energy levels. This is because natural light helps regulate our internal body clocks, leading to increased productivity and a better overall mood.

Conclusion

Circadian lighting is a powerful tool that can help regulate our internal body clocks and improve our overall health and well-being. By mimicking the natural changes in light that occur throughout the day, we can improve our sleep quality, mood, and energy levels. So why not give it a try and see how it can benefit you and your family? By implementing circadian lighting in your home, you can help regulate your internal body clock and promote better overall health.

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