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Dispelling Misconceptions About Blue Light: The Real Issue with Blue Light Blockers

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Blue light blockers have become increasingly popular in recent years. Whether in the form of screen covers or glasses, it seems like everyone is advising us to use them. However, it’s important to note that blue light is actually essential for our well-being. It plays a crucial role in enhancing alertness, improving memory and brain function, boosting mood, and regulating our circadian rhythm and hormonal balance.

Now, let’s explore why blue light sometimes receives negative attention. We’ll delve into the scientific aspects and provide you with a better understanding of when you may or may not need blue light protection.

  1. What is Blue Light?

In simple terms, blue light is a type of light that has a high energy and a short wavelength. It is part of the visible spectrum, which means that it can be seen by the human eye. The primary natural source of blue light is sunlight, and it makes up about one-third of all visible light. However, blue light can also be emitted by artificial sources such as smartphones, TVs, computer screens, and standard LED lighting.

2. How Does Blue Light Affect Us?

Blue light has both positive and negative effects on our bodies, and it is one of the most critical factors when it comes to our health.

Blue light affects many bodily functions that we may not even realize. It can impact our circadian rhythm, mood, alertness, brain function, melatonin suppression, body temperature, and hormone regulation.

During the daytime, exposure to blue light can improve our alertness and cognitive performance, helping us to focus and be productive. It can also regulate our body temperature and affect the secretion of hormones like cortisol, making us feel comfortable.

However, prolonged exposure to blue light at night or in dimly lit environments can have negative effects on our eyes and overall health. It can disrupt our sleep patterns by suppressing melatonin production, leading to insomnia, poor sleep quality, and even long-term health issues such as an increased risk of obesity, diabetes, and cardiovascular problems.

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Do We Really Need Blue Light Blockers? 

There are two types of blue light blockers available. The first type consists of nearly clear lenses that block a smaller percentage of blue light (typically around 20-40%). The second type, which is more popular, has lenses with a yellow or amber tint. These blockers are more effective at blocking blue light (often more than 60%) and are particularly useful at night. However, if you choose to use the second type of blue light blocker at night, it's important to use them consistently at the same time every night.

There is a common misconception that we need blue light blockers, when in reality, we actually need blue light for our well-being. As we discussed earlier, blue light plays a crucial role in various bodily functions, especially during the day. It is necessary for maintaining balance in our bodies and minds.

Blue light suppresses the production of melatonin, the hormone responsible for making us feel tired and signaling when it's time to sleep. When exposed to blue light at night, our natural sleep process is disrupted, making it harder to fall asleep and disrupting healthy sleep patterns. This can leave us feeling tired the next day and can even lead to a cascade of imbalances in our body.

If you decide to use blue light glasses, it's recommended to use them at night when using your phone or watching TV. Additionally, you can set your phone screen to a night shift mode, which reduces the blue light and emits a warmer, amber or reddish light.

Other Alternatives to Blue Light Glasses

So, what can we do to reduce the negative effects of blue light exposure? It's important to remember that blue light during the day is crucial to our health. However, we need to be mindful of our exposure to blue light in the evening when we're preparing for bed.

  • 1. Limiting screen time - Try implementing a "no screens" rule before bedtime to avoid difficulty falling or staying asleep.
  • 2. Get an Epazo Toi LED light is a device that replicates the natural light we receive throughout the day, both visually and non-visually. It focuses on the "sky blue" wavelength that provides the right amount of blue light during the day and none at night.
  • 3.Turn off indoor lighting 1-2 hours before bedtime - This can help reduce exposure to blue light emitted by standard LED lights.
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Blue light is an essential part of our lives, both naturally and artificially. While it has beneficial effects during the day, prolonged exposure to blue light from electronic devices can negatively impact our sleep, eyes, and overall health. Remember that getting the right light at the right time is crucial to our well-being.

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