You are likely reading these lines now on a device emitting blue light towards your eyes. With the unprecedented increase in the number of hours we spend daily in front of screens, it is natural to wonder: Should I be worried about this light?

Youm7 reviews the benefits and harms of blue light, according to Health.ucdavis.

Exposure to blue light, especially from the sun, helps increase alertness and focus, enhancing productivity during the day.

Blue light plays an important role in regulating the sleep-wake cycle by adjusting the body’s natural rhythm through controlling the secretion of melatonin, the hormone that induces sleep.

Exposure to blue sunlight helps improve mood, and blue light therapy is used as part of treatment for seasonal affective disorder.

Exposure to blue light before bedtime can affect the natural sleep cycle by reducing melatonin secretion and delaying sleepiness, causing sleep problems and insomnia.

Continuous exposure to blue light from electronic screens leads to eye strain and may cause symptoms such as dryness, itching, and discomfort.

Some research indicates that prolonged exposure to blue light can negatively affect retinal health and increase the risk of disorders such as age-related macular degeneration.

Excessive use of devices emitting blue light may impact mental health and increase stress and anxiety levels due to lack of sleep.