PubHawk
December 2019 PMID 31433569

The inner clock-Blue light sets the human rhythm.

Siegfried Wahl, Moritz Engelhardt, Patrick Schaupp, Christian Lappe, Iliya V Ivanov

Full text PDF Download social card

Mentions

120
Peak: 14 in Jan 2022
across 6 sources since Aug 2019

Extended reach

435,090
potential audience

Total likes

800

Video views

23,480

Mentions per month

Aug 2019 – Nov 2025

Where it's discussed

  • News59 articles
  • X / Twitter46 posts
  • YouTube7 videos
  • Blogs4 articles
  • Facebook3 posts
  • Bluesky1 posts

AI synopsis

What people are saying

The overall discussions reveal a strong consensus on blue light's influence on the body's internal clock, exemplified by references to the superchiasmatic nucleus and effects on melatonin, with users actively sharing scientific and practical insights. The tone ranges from informative to concerned, emphasizing the importance of managing blue light exposure for health, which supports the high scores in agreement, interest, engagement, and impact.

AgreementStrong agreement

Most discussions agree that blue light has a significant influence on human circadian rhythms and sleep, with many emphasizing its importance based on scientific evidence.

InterestHigh interest

The majority show high interest, citing specific aspects like the role of the superchiasmatic nucleus, the effects on melatonin, and health implications, indicating active engagement with the topic.

EngagementHigh engagement

Posts demonstrate deep engagement through references to research, practical tips (e.g., avoiding blue light at night), and quoting scientific findings, reflecting thoughtful participation.

ImpactHigh impact

The conversations highlight the substantial impact of blue light awareness on sleep hygiene and daily health practices, with some suggesting it could alter behaviors and societal norms.

Abstract in brief

  • Blue light plays a crucial role in synchronizing the human body's internal clock, particularly through the suprachiasmatic nuclei in the brain, and helps maintain biological and psychological rhythms.
  • Proper exposure to blue light during the day enhances sleep quality, mood, and cognitive performance by regulating melatonin secretion, but exposure later in the day or before bed can negatively impact sleep and circadian cycles.
  • As modern society sees increased use of blue light-emitting devices, there is a growing need for solutions to manage blue light exposure to protect sleep and overall wellbeing.]
Read the full abstract

Top posts

Most liked on X and Bluesky
Mg2+ Papi, the BowTied Mg2+
@Grimhood · X

The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 20, 2022 · 57 likes · 14 shares · 134,153 followers View post →
أ. د. أحمد بن سالم باهمام
@sleep_bahammam · X

تأثير استخدام جهاز ينبعث منه ضوء خلال النهار. ثبت علميا أن التعرض للضوء الأزرق حتى 4 ساعات قبل النوم يمكن أن يؤثر على مستويات الميلاتونين في الليل وجودة النوم التي يشعر بها النائم المصدر: https://t.co/0MZi3MALvp https://t.co/betfZOe8lh

Apr 17, 2020 · 14 likes · 9 shares · 53,769 followers View post →
Cátia
@catia43 · X

@kanalkaveira Factual e mensurável. https://t.co/AabiXXSxGI

Aug 19, 2022 · 2 likes · 2,835 followers View post →
Ana Bonassa
@aAnaBonassa · X

@anna_santos0001 @bioriderjr Referências: The inner clock—Blue light sets the human rhythm https://t.co/XqWd3mhf4V Effects of blue light on the circadian system and eye physiology https://t.co/16CPzKafxZ Does the iPad Night Shift mode reduce melatonin suppression? https://t.co/pYWUM5g8bv

Jun 27, 2023 · 1 like · 39,908 followers View post →
Puppygames
@puppygames · X

@larsiusprime https://t.co/JwwpK1d70q.

Nov 15, 2020 · 1 like · 7,039 followers View post →
Norberto Sanches Gonçalves
@nsgoncal · X

@o_sem_enzima Em todo caso, dá um bico nisso aqui: https://t.co/LDsQ5EakPc

Jul 23, 2020 · 1 like · 172 followers View post →

All mentions

Stef "inclusion is a human right" Christensen
@wikisteff.bsky.social · Bluesky

You have an area in your brain called the superchiasmic nucleus of the hypothalamus that regulates your day/night cycle via melatonin, among other things. It responds directly to blue light. pubmed.ncbi.nlm.nih.gov/31433569/

Dec 10, 2024 · 1 like · 1 share View post →
SweetzThingz
@sweetzthingz · X

@stilettodee1 https://t.co/yIEWtedyf4

Oct 27, 2024 · 167 followers View post →
indul
@_indul · X

@pagoru_ Para eye strain se supone que no vale de nada, pero hay evidencia abundante de que la sobreexposición a luz azul, especialmente a ciertas horas, es muy dañina para el ciclo de sueño y el ritmo circadiano. https://t.co/90ZddQsjQx https://t.co/111Auf1vg9 https://t.co/CyRGZsQ0ZD

Sep 11, 2024 · 330 followers View post →
Akdeniz Tanrısı
@AkdenizTanrisi · X

@Mr_Talha00 Hocam mavi ışığın melatonin baskılamakla ilişkisi var o yüzden önemli olduğunu düşünüyorum. https://t.co/WLmG8CSctc Prensip olarak, uyanık olunacak saatlerde yüksek, parlak mavi ışık, uykuya doğru ise ya tamamen karanlık veya illa bir ışık olacaksa sarı-kırmızı tonları.

Dec 10, 2023 · 173 followers View post →
Javi Ciborro
@papayaykware · X

https://t.co/Tc4GGrdiZA El reloj interior: la luz azul marca el ritmo humano

Oct 28, 2023 · 8,041 followers View post →
Ana Bonassa
@aAnaBonassa · X

@anna_santos0001 @bioriderjr Referências: The inner clock—Blue light sets the human rhythm https://t.co/XqWd3mhf4V Effects of blue light on the circadian system and eye physiology https://t.co/16CPzKafxZ Does the iPad Night Shift mode reduce melatonin suppression? https://t.co/pYWUM5g8bv

Jun 27, 2023 · 1 like · 39,908 followers View post →
Sandy_Samiam
@Scvmom7 · X

@elonmusk Great point. That blue light is not helping us sleep! https://t.co/2yZYsrEPzm

May 18, 2023 · 105 followers View post →
Chris
@LVSChris · X

@alchemyjosh @DrCerise_scp @danidonovan Emphasis on blue wavelength still stands as far as I can tell. Glad you found a method that worked for you though. https://t.co/lkUzir6tqG

Nov 23, 2022 · 77 followers View post →
Sagittarius
@vicguani · X

"The inner clock—Blue light sets the human rhythm" https://t.co/83Ct56VrYn.

Oct 6, 2022 · 263 followers View post →
OptimOZ.com.au
@OptimOZ · X

The inner clock-Blue light sets the human rhythm https://t.co/NmHYqtFqWY https://t.co/9FN27hwUtO

Sep 27, 2022 · 473 followers View post →
Cátia
@catia43 · X

@kanalkaveira Factual e mensurável. https://t.co/AabiXXSxGI

Aug 19, 2022 · 2 likes · 2,835 followers View post →
Defund the police
@MoreSocialism · X

@brielarson My understanding is that blue light would work better. That is what the photosensitive retinal ganglion cells are most sensitive to. https://t.co/gmXhowEdZa

Jun 30, 2022 · 1,055 followers View post →
Lance Goyke
@LanceGoyke · X

I'm really enjoying this article this morning. How I've missed the suprachiasmatic nucleus. The inner clock: Blue light sets the human rhythm https://t.co/45cq4DjYRE

Jun 22, 2022 · 598 followers View post →
matt
@ELOHlMr6 · X

@MentalistC_ this is from Gianluca Tosini, a leading researcher in lights physiological effects. https://t.co/HnmXJO28ap and here's Siegfried Wahl on cold lights effect on your sleep cycle and melatonin production, among other things https://t.co/8q68eSWpZI

May 1, 2022 · 1 like · 26 followers View post →
Adam David Long
@adamdavidlong · X

4. Try to avoid blue light at night. https://t.co/CWbNFCg9hG

Jan 31, 2022 · 3,686 followers View post →
James Tang
@James69888 · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 21, 2022 · 14 shares · 1,601 followers View post →
ENDALA klinika zdraví
@endalaclinic · X

The inner clock—Blue light sets the human rhythm - Wahl - 2019 - Journal of Biophotonics - Wiley Online Library https://t.co/kEXCaNnygw

Jan 21, 2022 · 254 followers View post →
munirah
@munnierah · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 21, 2022 · 14 shares · 734 followers View post →
izzatt
@izzattzuhair · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 21, 2022 · 14 shares · 156 followers View post →
Nvm.
@twtnvm · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 20, 2022 · 14 shares · 712 followers View post →
Oscar Andres
@OscarAndresMD · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 20, 2022 · 14 shares · 553 followers View post →
SherVal
@SherGVal · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 20, 2022 · 14 shares · 40 followers View post →
Mitominder
@Mitominder · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 20, 2022 · 14 shares · 2,257 followers View post →
KharonLaQua
@KharonLaQua · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 20, 2022 · 14 shares · 24,091 followers View post →
(D) (R) (I) Distancing
@StephaniePalosP · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 20, 2022 · 14 shares · 3,196 followers View post →
Arielo
@arielsaul · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 20, 2022 · 14 shares · 922 followers View post →
Batman Arkham
@batimov · X

RT @Grimhood: The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 20, 2022 · 14 shares · 2,550 followers View post →
Mg2+ Papi, the BowTied Mg2+
@Grimhood · X

The inner clock—Blue light sets the human rhythm https://t.co/jIqhKLCz3R https://t.co/jdF5aSdQCL

Jan 20, 2022 · 57 likes · 14 shares · 134,153 followers View post →
Clement Haeck PhD, PharmD, MS
@ClemHaeck · X

RT @FIPYPG: This can help your body better produce melatonin naturally as evening progresses, helping you #sleep

Dec 30, 2021 · 1 share · 1,831 followers View post →
FIP ECPG
@FIPECPG · X

This can help your body better produce melatonin naturally as evening progresses, helping you #sleep

Dec 29, 2021 · 1 share · 4,281 followers View post →
Retweet
@Retweet45614435 · X

RT @sleep_bahammam: تأثير استخدام جهاز ينبعث منه ضوء خلال النهار. ثبت علميا أن التعرض للضوء الأزرق حتى 4 ساعات قبل النوم يمكن أن يؤثر على م…

Jun 2, 2021 · 9 shares · 2 followers View post →
Stray Autistic Cat
@obrerx · X

@Fair_Maiden7 @WilliamShatner Read this. It is in fact blue (between 446nm to 477nm, which is not blue-green on color spectrum) sensitivity that has most effect on circadian rhythms. Most "white" light has this as a big part of the rays emitted. https://t.co/WWWICNULyW

Nov 29, 2020 · 3,607 followers View post →
Puppygames
@puppygames · X

@larsiusprime https://t.co/JwwpK1d70q.

Nov 15, 2020 · 1 like · 7,039 followers View post →
Dr Sanil Rege FRANZCP | MRCPsych
@sanilrege · X

@tylerblack32 Ofcourse all light would. But light spectra and their effects vary. Dim light as part of sleep hygiene has always been mentioned. https://t.co/p4kCgjdcjT

Aug 15, 2020 · 10,051 followers View post →
Norberto Sanches Gonçalves
@nsgoncal · X

@o_sem_enzima Em todo caso, dá um bico nisso aqui: https://t.co/LDsQ5EakPc

Jul 23, 2020 · 1 like · 172 followers View post →
Omar Hammouda
@HammoudaOm · X

RT @sleep_bahammam: تأثير استخدام جهاز ينبعث منه ضوء خلال النهار. ثبت علميا أن التعرض للضوء الأزرق حتى 4 ساعات قبل النوم يمكن أن يؤثر على م…

Jun 20, 2020 · 9 shares · 807 followers View post →
أ. د. أحمد بن سالم باهمام
@sleep_bahammam · X

RT @sleep_bahammam: تأثير استخدام جهاز ينبعث منه ضوء خلال النهار. ثبت علميا أن التعرض للضوء الأزرق حتى 4 ساعات قبل النوم يمكن أن يؤثر على م…

Jun 19, 2020 · 9 shares · 53,769 followers View post →
د. محمد العمراني
@Mohd_Alomrani · X

RT @sleep_bahammam: تأثير استخدام جهاز ينبعث منه ضوء خلال النهار. ثبت علميا أن التعرض للضوء الأزرق حتى 4 ساعات قبل النوم يمكن أن يؤثر على م…

May 20, 2020 · 9 shares · 226 followers View post →
Arch.Moayad .. : )
@moauad0 · X

RT @sleep_bahammam: تأثير استخدام جهاز ينبعث منه ضوء خلال النهار. ثبت علميا أن التعرض للضوء الأزرق حتى 4 ساعات قبل النوم يمكن أن يؤثر على م…

Apr 19, 2020 · 9 shares · 392 followers View post →
Al Motasem B Attiyah | المعتصم عطيه
@Almotasem_att · X

RT @sleep_bahammam: تأثير استخدام جهاز ينبعث منه ضوء خلال النهار. ثبت علميا أن التعرض للضوء الأزرق حتى 4 ساعات قبل النوم يمكن أن يؤثر على م…

Apr 19, 2020 · 9 shares · 11,269 followers View post →
د. عبدالله القرني
@alqarni_sleep · X

RT @sleep_bahammam: تأثير استخدام جهاز ينبعث منه ضوء خلال النهار. ثبت علميا أن التعرض للضوء الأزرق حتى 4 ساعات قبل النوم يمكن أن يؤثر على م…

Apr 17, 2020 · 9 shares · 550 followers View post →
د. سلطان الشهراني
@DrSuAlshahrani · X

RT @sleep_bahammam: تأثير استخدام جهاز ينبعث منه ضوء خلال النهار. ثبت علميا أن التعرض للضوء الأزرق حتى 4 ساعات قبل النوم يمكن أن يؤثر على م…

Apr 17, 2020 · 9 shares · 30,934 followers View post →
أ. د. أحمد بن سالم باهمام
@sleep_bahammam · X

تأثير استخدام جهاز ينبعث منه ضوء خلال النهار. ثبت علميا أن التعرض للضوء الأزرق حتى 4 ساعات قبل النوم يمكن أن يؤثر على مستويات الميلاتونين في الليل وجودة النوم التي يشعر بها النائم المصدر: https://t.co/0MZi3MALvp https://t.co/betfZOe8lh

Apr 17, 2020 · 14 likes · 9 shares · 53,769 followers View post →
biophotonicat
@biophotonicat · X

The inner clock—Blue light sets the human rhythm https://t.co/bGQTLFDw4I #biophotonics #biomedicaloptics https://t.co/Fj3gmJi6LW

Sep 3, 2019 · 1,528 followers View post →
Sleep Disorders News & Research
@Sleep_Bio · X

RT @Sleep_Bio: The inner clock blue light sets the human rhythm. https://t.co/wyrugb5cRL #sleep

Aug 24, 2019 · 1 share · 197 followers View post →
biophotonicat
@biophotonicat · X

The inner clock ‐ blue light sets the human rhythm https://t.co/bGQTLFlUG8 #biophotonics #biomedicaloptics

Aug 23, 2019 · 1,528 followers View post →
Sleep Disorders News & Research
@Sleep_Bio · X

The inner clock blue light sets the human rhythm. https://t.co/wyrugb5cRL #sleep

Aug 22, 2019 · 1 share · 197 followers View post →