Which hormone does blue light interfere with?

Melatonin
More so than any other colour, blue light messes with your body's ability to prepare for sleep because it blocks a hormone called melatonin.
Find out how to sleep better and longer with our quiz!
Melatonin
More so than any other colour, blue light messes with your body's ability to prepare for sleep because it blocks a hormone called melatonin.
It induces sleepiness
Melatonin, the hormone produced by the pineal gland at night, serves as a time cue to the biological clock and promotes sleep anticipation in the brain default mode network (DMN); these effects may explain the increase in sleep propensity in circadian rhythm sleep disorders and the enhanced restorative sleep.
30%
Short-term insomnia is the most common sleep disorder, with nearly 30% of people reporting health issues related to insomnia. Common symptoms of insomnia are exhaustion, difficulty sleeping, poor concentration and difficulty focusing.
It disrupts the circadian rhythm
Being exposed to blue light in the evening can trick our brain into thinking it is still daytime, disrupting circadian rhythms and leaving us feeling alert instead of tired. Chronic misalignment of circadian rhythms can also lead to many negative health impacts.
All of the above options are correct
Starting the day off with some exposure to the sun sets the tone for your circadian clock to get in sync. If you can get outside and exercise, that’s great, but even if you can’t, simply working near a window can be enough to reap the benefits of blue light during the day.
If you are not keen on turning off your smartphone, the next best thing is to change your device’s ‘built-in’ settings. Most, if not all, smartphones, tablets, and computers have a setting designed to filter out harmful blue light.
Are you addicted to social media apps like Twitter, Tiktok and Instagram? While there is nothing inherently wrong with these apps, if you find yourself spending too much time on them before bed, they can negatively impact your sleep.
Shuji Nakamura
Shuji Nakamura, Isamu Akasaki, and Hiroshi Amano were awarded the Nobel Prize in physics for their invention of blue LED, which made it possible to light flat-screen TVs, computer monitors, smartphones, and tablets.
Red
Research studies discovered red to be the best colour light to help you sleep because it increases the production of melatonin as well as full darkness.
It's a setting that decreases screen brightness
Night mode, or dark mode, is a setting offered on many digital devices to decrease screen brightness and reduce eye strain in the process.
It’s true!
Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than the other colours because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
Telephone
Compared to the sun, electronic devices, such as telephones and tablets, emit a minimal amount of blue light.
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