The Effects Of Blue Screens On Our Health

Fatigue

Blue light is important during the daytime, especially the blue light emitted by the sun. It increases attention and boosts our mood, and exposure to it during the day helps set our circadian rhythm, which is the body’s internal clock that tells us when to sleep and when to wake. Exposure to blue light at night, however, does just the opposite. Even at low levels, blue light disrupts the circadian rhythm and prevents the release of melatonin, a hormone that helps regulate our sleep cycle. This disruption can lead to poor quality sleep or insomnia, resulting in fatigue the next day.

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Affects Mood

The fatigue from sleep deprivation affects our mood. Most of us are cranky, irritable, and short-tempered after even just one night of poor sleep. Continual sleep disruption from exposure to blue light can set us on an emotional rollercoaster. But changes to our circadian rhythm can have more serious effects on our mood as well. Studies have found structural changes in the brains of individuals who have significant disruptions to their circadian rhythms. These disruptions can also affect the expression of neurotransmitters such as serotonin, dopamine, and norepinephrine, which are essential to mood regulation.

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