What Is Blue Light?

What Is Blue Light?

            High-energy visible (HEV) light, or blue light, is one of the colors in the visible light spectrum that can be viewed by humans. Nanometers (nm) are used to measure the distance between two points, and blue light has a wavelength of 380 nm to 500 nm; basically, the shorter the wavelength, the greater the energy. Since blue light has a very small wavelength, it contains a great deal of energy. The range of blue light is from 380 to 500 nm. The sun is the primary source of blue light, which is actually good for you. Natural blue light is important for good health because it aids in maintaining a healthy circadian rhythm, the issue right now is that we are constantly exposed to artificial blue light from sources such as LED lights, televisions, smartphones, and even refrigerators.

Blue light and Melatonin

            The pineal gland in the human brain secretes melatonin, also known as the “sleep hormone,” which plays an important role in controlling sleep and wakefulness. As the sun sets, the brain gets a signal to start creating melatonin, which causes us to become drowsy and finally fall asleep. This is disrupted, however, by being exposed to artificial blue light late at night. If you look at your cell phone, arrive home and turn on the TV or lights, or do anything else that exposes you to blue light, the human brain will assume it’s daytime and cease making melatonin. Even if the blue light is dim, it still prevents you from getting sufficient sleep at night. You may have problems falling asleep, staying asleep, and entering deep or rapid eye movement (REM) sleep as a result of this. Even when you do sleep, blue lights interference might leave you feeling drained and tired upon waking.

Blue light in nature

            When compared to artificial blue light, natural blue light is always accompanied by a balanced amount of infrared, red, yellow, orange, and ultraviolet wavelengths. This is what’s meant by “full spectrum light.” Day to day, the spectrum shifts from less blue to more red and infrared in the morning, more blue and ultraviolet at midday, and back to more red and infrared in the evening.

Setting your circadian rhythm and controlling your sleep and wake times requires adequate exposure to blue light from the sun.

Blue light from the sun is essential for maintaining overall health and wellness.

The presence or absence of blue light teaches and sets our circadian rhythms. When the blue light of the sun reaches our eyes in the morning, it signals to our brain that the day started and that it is time to feel alert, focused, and energised. The lack of blue light tells our brain that it’s time to relax, thus melatonin production increases as the sun sets down and night falls. This induces feelings of calm and exhaustion as well as peaceful, deep sleep.

So what can I do about all this harmful blue light?

                         As soon as you wake up in the morning, expose yourself to pure natural sunlight to reset the body’s clock and circadian rhythm. This allows you to start producing the most melatonin, which will be released at night. At night, wear glasses that obscure blue light. Avoid removing the blue light spectacles during light exposure. This will allow for maximum melatonin release, ensuring a restful night’s sleep and enabling your body to repair, recover, and regenerate

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