Blue Light

What is the Blue Light?

How many hours do you spend each day in front of digital screens?

According to studies by Harvard University, 60% of people spend more than 6 hours a day in front of these types of screens.

What is the Blue Light?

Not all colors of light have the same effect. Blue wavelengths are beneficial during daylight hours because they increase attention. And the proliferation of electronic devices with screens, as well as low-power lighting, is increasing our exposure to blue wavelengths, especially after sunset.

Is night exposure to light bad?

Exposure to light suppresses the secretion of melatonin, a hormone that influences circadian rhythms, and there is some experimental (preliminary) evidence that lower levels of melatonin could explain the association with cancer.

A Harvard study shed some light on the possible connection with diabetes and possibly obesity. The researchers put 10 people on a schedule that gradually changed the rhythm of their circadian rhythms. Their blood sugar levels increased, throwing them into a prediabetic state, and leptin levels, a hormone that leaves people feeling full after a meal, went down.

Effects of blue light and sleep.

While light of any kind can suppress melatonin secretion, blue light at night does it with more power. Harvard researchers and their peers conducted an experiment that compared the effects of 6.5 hours of blue light exposure with green light exposure of comparable brightness. The blue light suppressed melatonin for about twice as much as the green light and modified circadian rhythms twice (3 hours vs. 1.5 hours).

In another blue light study, researchers at the University of Toronto compared the melatonin levels of people exposed to bright interior light who wore blue light goggles to people exposed to regular dim light without wearing glasses. The fact that the hormone levels were almost equal in the two groups reinforces the hypothesis that blue light is a potent melatonin suppressant. He also suggests that shift workers and night owls could protect themselves if they wore glasses that block blue light. The glasses, often with orange-tinted lenses, block blue light, but also other colors, so they are not entirely suitable to use. In we use authentic glasses with Anti Blue Light without the need to pay excessive economic amounts.

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