How harmful is blue light from phones and TVs?

Blue light is typical of the type of light emitted from electronic devices such as energy-saving light bulbs, phones, televisions... which negatively affects health.

Here's why you should know about the health effects of this light source:

Photo: nickpepiton.

Inhibits the body's production of melatonin

Melatonin is a hormone that helps the body fall asleep quickly. If the brain does not produce enough melatonin (due to exposure to blue light from electronic devices), you will have difficulty falling asleep and staying asleep. This means you are more likely to feel groggy and exhausted the next day. Turning off the TV or electronic devices before bed is a solution to help you sleep well.

Effects on circadian rhythms

Your circadian rhythm is a rhythm that responds to light or darkness, affecting your body, mood, and behavioral changes over a 24-hour cycle. It also affects your sleep-wake cycle, hormone production, and body temperature regulation. Unfortunately, blue light is one of the factors that affects your circadian rhythm, which can leave you feeling tired and unbalanced.

Stimulating

During the day, blue light has no negative effects, but at night it can disrupt your relaxation and rest by attracting you, making you focus, pay too much attention, causing irritation, and changing your mood.

Effects on the eyes

Exposure to large amounts of blue light over long periods of time can cause age-related macular degeneration.

Effective in treatment

While blue light from electronic devices doesn’t have many positive benefits, it can still be used in certain situations to treat medical conditions. For example, according to the Mayo Clinic, the stimulating effects of blue light can help people with seasonal affective disorder (SAD). You’ll need to talk to your doctor about how to use it, and the specific type of light, to avoid causing eye damage.

Blue light is found everywhere and we are unknowingly exposed to it all day long. Computers, TVs, mobile phones, tablets, LED lights, fluorescent lights all emit blue light. Obviously blue light is not something you can avoid, but you can choose products that filter this light.

You can buy screens for electronic devices that have blue light filters, install programs on your computer that help filter the light on your computer screen. There are also glasses that help filter out this light. At night, you can use light filtering devices to avoid negative effects from them.

According to VnExpress