What is the Origin & Reason for Blue Eyes?

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Күн бұрын

Check Out Part 2 of this Series: Why Do Inuits Not Have Blue Eyes? The Reason for Blue Eyes (Part 2) • Why Do Inuits Not Have...
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What is the Origin & Reason for Blue Eyes?
Chapters:
0:00 Blue Eyes
1:44 Light Sensitivity
2:19 Origin of Blue Eyes
3:19 Theories on the Evolution of Blue Eyes
4:44 My Theory
6:54 What's Your Thoughts?
7:55 Support This Channel
When did blue eyes first develop and for what reason? Now I do have my own a theory about why blue eyes developed but I will share that at the end.
Firstly though, it does seem that all human beings initially had brown eyes, and they are still by far the most common eye colour today, with approximately 79% of people in the world having brown eyes. They result from a relatively high concentration of melanin in the stroma of the iris, which causes light of both shorter and longer wavelengths to be absorbed.
Blue eyes are much less common however, with approximately 8% to 10% of the global population having blue eyes. They are most common in Europe, particularly northern Europe, but found in people across the world, although many of these people have ancestry connected to Europe. This table shows the countries with the highest percentage of people with blue eyes in the world, led by Estonia, Finland, Sweden and Iceland.
Interestingly to note, there is no actual blue pigmentation either in the iris or in the vitreous body, as it is to do with how light is reflected. In people with blue eyes, longer wavelengths of light tend to be absorbed by the dark underlying epithelium, while shorter wavelengths are reflected and undergo Rayleigh scattering in the turbid medium of the stroma. This is the same scattering that accounts for the blue appearance of the sky. Blue eyes however do have lower concentrations of melanin in the stroma of the iris compared to brown eyes.
Now it does seem that blue eyes are more sensitive to light during the day, but are better at seeing in dim conditions compared to darker eyes. This is perhaps due to the lower levels of melanin in blue eyes. This logically makes sense as well.
Sources:
Does Eye Color Affect Vision? Does Eye Color Affect Vision? | Atlantic Eye Institute
Suarez, P., Baumer, K. & Hall, D. Further insight into the global variability of the OCA2-HERC2 locus for human pigmentation from multiallelic markers. Sci Rep 11, 22530 (2021). doi.org/10.1038/s41598-021-01...
Effect of iris pigmentation of blue and brown eyed individuals with European ancestry on ability to see in low light conditions after a short-term dark adaption period, Faith Erin Cain, Kyoko Yamaguchi 2024.01.17.576074; doi: doi.org/10.1101/2024.01.17.57...
List of cities in Europe by sunshine duration - Wikipedia
Eiberg H, Troelsen J, Nielsen M, Mikkelsen A, Mengel-From J, Kjaer KW, Hansen L. Blue eye color in humans may be caused by a perfectly associated founder mutation in a regulatory element located within the HERC2 gene inhibiting OCA2 expression. Hum Genet. 2008 Mar;123(2):177-87. doi: 10.1007/s00439-007-0460-x. Epub 2008 Jan 3. PMID: 18172690.
Olalde I. et al The Beaker phenomenon and the genomic transformation of northwest Europe. Nature. 2018 Mar 8;555(7695):190-196. doi: 10.1038/nature25738. Epub 2018 Feb 21. Erratum in: Nature. 2018 Mar 21;555(7697):543. PMID: 29466337; PMCID: PMC5973796.
Eye color - Wikipedia
People with brown EYES have a higher risk of developing winter depression - Mirror Online
Countries With The Most Blue-Eyed People - WorldAtlas
Why Did Blue Eyes Evolve? | Resource Center | Milan Eye Center
Melanin - Wikipedia
Western Hunter-Gatherer - Wikipedia
Eastern Hunter-Gatherer - Wikipedia
Sunrise and sunset times in Edinburgh, December 2023 (timeanddate.com)
Early European Farmers - Wikipedia
Creative Commons Imagery:
Velivieras File:Eye colors map of Europe.png - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International license. CC BY-SA 4.0 Deed | Attribution-ShareAlike 4.0 International | Creative Commons
Matteo De Stefano/MUSE File:Homo sapiens - Neolithic - reconstruction - MUSE.jpg - Wikimedia Commons Creative Commons Attribution-Share Alike 3.0 Unported license. CC BY-SA 3.0 Deed | Attribution-ShareAlike 3.0 Unported | Creative Commons
#blueyes #history #ancestry

Пікірлер: 883

@celtichistorydecoded Ай бұрын

Please let me know your thoughts below? Thanks for watching! 😀 Check Out Part 2 as well - Why Do Inuits Not Have Blue Eyes? The Reason for Blue Eyes (Part 2) kzfaq.info/get/bejne/Y9pjgqurureXoXU.html

@colinjames7569 Ай бұрын

Read my comment

@sandraclark3793 Ай бұрын

what about my blond eyebrows? I do have hazel blue eyes.

@colinjames7569 Ай бұрын

@@sandraclark3793 I don’t have an opinion

@colinjames7569 Ай бұрын

you want me to know what? You could be a trans for all I know. At least I present myself.?take a picture

@colinjames7569 Ай бұрын

@@sandraclark3793 GTFO you want me to what. Faceless. Impersonator.

@DavidSmyth8439 Ай бұрын

Europe was particularly heavily forrested before the arrival of agricultural. Which would have further reduced light

@CENTRIX4 Ай бұрын

Dense cloud cover reduces ambient Ultra Violet levels at ground level add to this what you have posted the dense forests further reducing ambient Ultra Violet levels at ground level. The two combined can explain how blue eyes with a sensitivity to Ultra Violet thus enhanced vision with low ambient Ultra Violet at ground levels renders blue eyes a biological adaption that confers a survival advantage in pre-history before settled farming arrived in Europe.

@Rusyn1910 Ай бұрын

I have crystal blue eyes. Under the canopy of the forest I was most comfortable, also, dawn and dusk. Amongst my friends who had brown and green eyes, I was able to see in the dark the best.

@colinjames7569 Ай бұрын

This is true. It is a fact

@zerenx8272 Ай бұрын

South east Asia and the congo and the amazon are heavily forested why the pymies didnt evolve blue eyes?

@Rusyn1910 Ай бұрын

@@zerenx8272 Melanesians are in South East Asia and they have blue eyes. It is a quirk of a mutation though.

@ajrwilde14 Ай бұрын

Blue eyes are an adaption to CLOUD. Cloudy climates are low-light so light skin and eyes are an adaption. The Inuit don't have blue eyes because although they have low light in the winter they don't live in a cloudy climate like Europe.

@jonwillis9919 27 күн бұрын

Winner!

@GnosticAtheist 26 күн бұрын

Indeed, also snow I have heard. It has something to do with the reflection that causes snow blindness. I heard that blue helps with that, but Im no scientist so dont quote me on that one without checking it up.

@LG-bs1rs 22 күн бұрын

@@GnosticAtheistno blue eyes would be worse for that bc melanin would protect more from reflective sun rays than blue. It would seem low light conditions plus sexual selection is for blue eyes rather than cold climate. Plus perhaps it was just unlucky for Inuit and other arctic peoples, at least in the Americas, they don’t have a large genetic variation and genetic mix and relatively new crossing over so they might not have had the time for blue eye development?

@russ549 21 күн бұрын

I've thought maybe it's the brightness of the snow that makes so many people from Northern latitudes have dark colored eyes.

@ericdpeerik3928 17 күн бұрын

Cool story, now do Sami people 😂

@clareoclareo2626 Ай бұрын

Makes sense, I'm comfortable walking about my house in the near dark, and I prefer lamps over bright ceiling lights, and start wearing sunglasses earlier in the year than other people, as the sun feels bright.

@maalikserebryakov Ай бұрын

brown eye chads can stare into the sun no problem blue eye virgins are built to stay at home 😂

@tramarherrera6685 Ай бұрын

I have green eyes and strong light bothers my eyes. Maybe that's why I prefer cloudy days.

@ThibauddeLaMarnierre Ай бұрын

Green eyes, but nyctalope.

@bla-bla-bla... Ай бұрын

The blue eyes are adapted for the north conditions of light. The peoples with this genetic living in the higher sun radiation often has the problems of view. In romania, many children with blue eyes needs the glasses from very young age, when those with brown never needs them. Southern then 60°th parallel, the blue eyes aren't naturally adapted. The skin of this peoples often is sensitive too, so it catches very quickly the sun-burns becoming red and itchy, the caucasian being normally resistant.

@eodyn7 Ай бұрын

@@maalikserebryakov blue eyed chads get all the women.

@GreatRetro Ай бұрын

Estonian here. Estonians mostly have Gray/Silver eyes. I know that it is considered to be a shade of Blue, but you can deffenetly tell Blue from Gray appart!

@nanoboi101 15 күн бұрын

Grey eyes are class

@watcher2424 6 күн бұрын

Komi-Udmurt is here. Both the Komi and the Udmurts have eyes of different colors. There are also brown-eyed, green-eyed, amber-colored, gray, blue, and almost white! (I don’t know what such a light eye color is called). In the same family, everyone can have different eye colors. My eyes are gray-blue, with a slight yellow rim around the pupil. and you can’t talk about appearance at all! there is, and in general it is impossible to distinguish from a Chinese or a Chinese woman, not so often though, to an absolute Caucasian in appearance! and all sorts of combinations on this topic. but there is a difference from Caucasians even in mixed families; the Ural breed makes its way very strongly, sometimes not in children but in grandchildren.

@nathanaustin2627 Ай бұрын

This makes sense. I could never understand why my brown-eyed wife kept turning the lights on, even in the middle of the day.

@wjf0ne 24 күн бұрын

@nathanaustin2627 It could be worse, my wife turns the heating on, then complains about the heat and opens a window. Needless to say she doesn't pay the heating bill.

@kilroy-cc8 Ай бұрын

I'm 62 with blue eyes and I have a hard time driving on the road at night. These new headlights are blinding me!

@debbieanne7962 29 күн бұрын

I also have that problem I don’t like driving at night all of a sudden, 63 years old with blue eyes

@jameskenworthy4445 28 күн бұрын

40 light blue eyes same happens

@catherder6 27 күн бұрын

I had the same problem turned out to be cataracts. Had them removed and now am ok at 83 .

@evil17 26 күн бұрын

@@catherder6at 62 I had cataract surgery when I was 40 & 50, a bifocal lens left & then a trifocal in right eye, night driving eye sensitivity is getting worse as I get older & the implants cause rings around lights at night.

@kevinc8811 22 күн бұрын

Unfortunately blue eyed people are more likely to develop AMD ( age-related macular degeneration). I’m 65, have blue eyes and have AMD. My night vision has deteriorated to a point where I can’t safely drive at night even if I wanted to.

@downandout992 Ай бұрын

I was watching this video for a couple of minutes reading the closed captions before I realized that the video was in English. Lol

@backintimealwyn5736 Ай бұрын

same, not a couple of minutes though but thirty seconds, then my brain identified english and adapted to the accent instantly, but at first I thought it was dutch or something ans my brain did'nt switch to english so I only heard sounds. Amazing how it works.

@lacix22 27 күн бұрын

Well…. our friend has a heavy accent

@musicmadgic6931 20 күн бұрын

@@backintimealwyn5736 Pretty much identical reaction. English and my brain adapted to the accent.

@cluckieschickens 9 күн бұрын

Where are you from? I didn't even notice the closed caption.

@downandout992 8 күн бұрын

@@cluckieschickens california

@RCSVirginia Ай бұрын

As an older man in the lovely Italian film "Cinema Paradiso" told a young guy who had fallen madly in love with a girl, "It's the blue eyes."

@pablogats4627 Ай бұрын

I'm from Greece and some people say blue eyed women will give you the evil eye 😂

@RCSVirginia Ай бұрын

@@pablogats4627 They may be evil eyes, but that has never stopped men from getting lost in them for even one second.

@sforza209 Ай бұрын

I often get lost in blue eyes. I cannot help myself!

@bluerock4456 Ай бұрын

What a great film 🎥 that was.

@jonkore2024 28 күн бұрын

That's what a lot of women I had in my young years said

@anaryl Ай бұрын

Blue eyed people have larger pupils which also lets more light on to the retina.

@Gwenhwyfar7 Ай бұрын

They don't really know why Siberian Huskies have blue eyes either

@sebastianparker2581 Ай бұрын

You read my mind I was thinking the same thing.ITS got to be the sun and the winters.

@jeroendebruyne2165 15 күн бұрын

You read my mind. I was thinking the same thing. Some sort of interbreeding with a nice husky is the origin of blue eyes

@peterfitzpatrick7032 Ай бұрын

I'm a green-eyed Irish ginger... 😌 As a welder, I do know that those with light blue eyes suffer arc-flash much more than other eye colours, I've often had it and its not nice... it feels like someone threw a handful of sand in your eyes & doesn't manifest until around 24hrs after seeing the flash... For me, its a minor irritation but blue-eyed peeps can suffer very badly for days after... 😎👍☘🍺

@thomastevelde8547 28 күн бұрын

Been there done that

@johndumarney1630 24 күн бұрын

Me too 50 years ago, never look at welding flash.

@jimolson8424 7 күн бұрын

If you are proficient welder You have the best hand writing of anyone. It is a art that was given to you. I made a living doing it.

@molecatcher3383 Ай бұрын

The cloudy skies often found in Scotland and Ireland (even in Summer LOL) also cut down on the sunshine which may add to the effect of the short winter daylight hours.

@darkstarr2321 23 күн бұрын

You realise blue eyes are found across Europe, not just Ireland and Scotland

@paddyo3841 Ай бұрын

I come from a large Irish family …my mother had gray eyes father had hazel brown eyes they had 3 boys with brown eyes, 1 girl with green hazel, 1 girl green blue, 1 boy gray, and 1 boy deep blue eyes…

@celtichistorydecoded Ай бұрын

Love it, thanks

@jonkore2024 Ай бұрын

Slavic mostly Polish n German all blue eyes

@tigerland4328 24 күн бұрын

My grandfather was born in England of Irish parents. He also had gray eyes.

@kremepye3613 21 күн бұрын

@@jonkore2024 germans are all Turkish nowadays

@brycewiborg8095 13 күн бұрын

This is interesting. I'm of Scandinavian heritage. From my paternal family we are 100% blue eyes. I had never given it any thought.

@annab.2086 5 күн бұрын

Unbelievable that you never gave it a thought! Most of the world is obsessed w blue eyes and how unfair it is when you don't have them.

@DorchesterMom Ай бұрын

Ny husband and I are of Northern European descent. His eyes are an icily piercing light blue, mine are light green. It’s interesting to note that green eyes are also considered “blue” in most scientific literature. Babies are either born with blue eyes or brown. In the case of blue eyes, it can take up to several years but, they can change to green. I had blue eyes until I was about three ❤

@sforza209 Ай бұрын

Same here. Bright blue eyes that changed to light green.

@cynsi7604 Ай бұрын

I was born with blue eyes. Then somewhere in my mid 20s they started changing colors. Went to get my DL & the licenses examiner (friend) ask what color my eyes were. I said “I don’t know what color do they look like today”? She looked at me real close and says “GREY”. So for about 8 yrs on my licenses have BLUE, then they have been listed GREY from then on. Time for me to renew my license wonder what color they will put on there now, they change colors to green-grey. And I’ll be 61. My mom & brother both blue eyed and stayed blue, my dad was hazel. Me I just had to be different & upset the quota, must be because I’m a Gemini ♊️ 🤣🤣 ✌🏻

@evil17 26 күн бұрын

I had blue eyes until after I was shot in the left eye with a home made arrow at 5yo, my left eye colour changed to a greeny to brownish colour that can change slightly day to day according to an observer.

@elizabethmulgrew7873 25 күн бұрын

My husband has blue eyes and I have light brown. My youngest son was born with blue eyes (as all my other children - they are gray or blue-gray now) and had them till he was 1 year old. Then suddenly one day we looked at him and he had brown eyes! Dark brown! So weird! I don't think he's a changeling LOL!

@Occident. Ай бұрын

Im of Gael origin. Irish and Scots. Born on Tyneside England. Father had green eyes. Mother had bright blue eyes. I have light blue eyes. My 11 children have blue eyes as do my 21 grandchildren. We Celts are the most blue eyed people.

@NacerDeArriba Ай бұрын

11 children. Great!!!

@alexandervanhove7327 Ай бұрын

Actually, all Irish grandmothers will tell their granddaughters that as Irish cumals they are born to fill the world with other cumals. Girls with red or blonde hair, blue or green eyes and freckles.This goes back to the days when the only way Irish chieftains could keep the Vikings from raiding their lands was to give them slave girls. So many Irish girls ended up in Iceland, Far Oer, York and the harems of the Muslims in Spain that those who remained had to have a lot of children, preferably daughters and the cumal became a currency. Slave girls taken by the Vikings usually liked it, not only because their life would improve, but the Viking men actually washed themselves and smelled nice. It's no wonder that peoplr living in Reykjavik look like Dubliners. d that

@jimalcott760 Ай бұрын

You’re the cause of global warming….😮

@davec5153 Ай бұрын

So am i, my whole family has blue eyes, apart from a few cousins.

@marcustulliuscicero5559 9 күн бұрын

God Bless your family! Hopefully I can also bring some more blue eyes into the world

@Thandar324 Ай бұрын

The lack of light makes a lot of sense for this.

@johnnywalker984 12 күн бұрын

um eskimos?

@MacNab23 Ай бұрын

I tend to think that the differing theories are not exclusive but rather complimentary. A combination of factors.

@celtichistorydecoded Ай бұрын

You are probably right. Thanks

@alexj9111 Ай бұрын

Rarer things are more precious, so i'm glad I have bluey green eyes.

@BladeMasterz916 Ай бұрын

Blue eyes, lighter skin, taller. Just like a plant reaching for light. That is how we humans adapted. The blue eyes, to adapt to lower light northern regions.

@johnnywalker984 12 күн бұрын

eskimoes?

@ataboyboyboy8895 Ай бұрын

I am from lebanon and half of my family have blue eyes. I am brown, mom a form of green, uncles blue, dad brown.

@shenghan9385 Ай бұрын

Descendants of the crusaders

@erichimes3062 Ай бұрын

@@shenghan9385🎯

@tannhauser137 Ай бұрын

@@shenghan9385 A ver si no decimos bobadas, en el Líbano hay gente que tuvo esa mutación mucho antes porque se produjo en el mar negro. Un ejemplo en España hay ojos azules por doquier, verdes, avellana.....El hombre de la Braña tenía los ojos azules hace 7000 años. La mutación de la piel blanca también se dio en Oriente próximo por los primeros agricultores del creciente fértil, hace 7000 años los cazadores recolectores europeos eran negros.

@NacerDeArriba Ай бұрын

Ancient lebanon dna is Closer to europeans thant modern lebanese dna.

@ataboyboyboy8895 Ай бұрын

@@shenghan9385 I believe that. My mother's side green and blue, one of my uncles looks like Marlon Brandon, blond with blue eyes so as his children. My father came from the Mountains, a remote village with an ancient Phoenician temple on the hill. still exist..

@FairnessFobe Ай бұрын

I'm leaning towards the light theory.

@jesse_campbell Ай бұрын

I love those Egyptian sculptures with blue glass eyes.

@WhiteWolfBlackStar Ай бұрын

I read somewhere I think it was Cheops had a red haired, blue eyed wife imported from Ireland. Years later my friend's mom went to Ireland and came back with an ankh. THAT blew my mind, I started looking into it, and weirdly there are more than a few ties between Celts and Egyptians.

@bluerock4456 Ай бұрын

Lapis lazuli, most likely.

@aaronwilcox6417 28 күн бұрын

There's artifacts similiar in ancient Sumer.

@robertfindley921 Ай бұрын

Women adore blue eyes. They practically worship them. What's the first thing women look for when they see a baby? It's eye color.

@jonbinki9651 Ай бұрын

Lol😂😂😂 i wish

@MsHistoryWoman Ай бұрын

Suuuuuuuuurrrrre buddy. I could care less about eye color.

@erichimes3062 Ай бұрын

@@MsHistoryWomanit’s true. 🤷‍♂️

@downandout992 Ай бұрын

Based on my own experience, I would agree with you. I was born with light brown eyes, but as I have aged my eyes for some reason have lightened into yellow, green, and blue. No one ever complimented my eyes when they were brown, but now women come up to me all the time just to look into my eyes and tell me how pretty they are. It's kind of nice. I just wish that they looked this way when I was still in my teens, because it is definitely a confidence booster.

@downandout992 Ай бұрын

@@erichimes3062 People like her don't care about the truth, they have an agenda that they are trying to push.

@DorchesterMom Ай бұрын

Thank you - I’ve come to really look forward to your presentations here.

@celtichistorydecoded Ай бұрын

Thank you

@lesvoutesparis1351 Ай бұрын

I'm still learning english and your wonderful accent is really challenging !

@selohcin Ай бұрын

Don't worry. The Scottish accent is challenging even for people from the United States.

@celtichistorydecoded Ай бұрын

Give it time and you will be speaking Scottish soon :)

@tigerland4328 24 күн бұрын

@@selohcinis it really that difficult to understand?. I only ask as I'm not Scottish either I'm northern English and my accent is completely different to the presenters but I can understand everything he says.

@selohcin 23 күн бұрын

@@tigerland4328 Obviously, my comment was about people from the United States, not people from England.

@tigerland4328 23 күн бұрын

@@selohcin I didn't mean any offence I was just asking how difficult it is to understand for people from outside the UK. I suppose it comes down to expose. There is probably accents in the USA that British people would find difficult to understand while it would relatively easy for Americans from other regions of the country.

@strange420daze 17 күн бұрын

I have blue eyes, and I prefer shopping in certain stores compared to others just because of the harsh lighting.

@aimaradiaz1840 Ай бұрын

I am American from Galician descent , i have blue eyes and so did my Galician grandmother and cousins….

@bluerock4456 Ай бұрын

Galicians are Celts for the most part, so the blue eyed-theory stands.

@xijinping880 4 күн бұрын

@@bluerock4456 they are mainly iberian not celtic

@bluerock4456 4 күн бұрын

@@xijinping880 not in Galicia.

@xijinping880 3 күн бұрын

@@bluerock4456 i was talking about galicia

@bluerock4456 3 күн бұрын

@@xijinping880 Then do your homework. Most Galicians are of Celtic descent.

@lakhanshahi3637 Ай бұрын

Very interesting information video. Thanks

@foxied Ай бұрын

It's only subjective, but I do see people with blue eyes attractive. Almost every each of my favourite characters have either blue eyes or blonde hair😅

@TimurDavletshin Ай бұрын

It's cultural aspect of watching movies created by Hollywood. Wait few years for your kids to grew up on black elves, gnomes and even black Thor.

@Beldoras Ай бұрын

@@TimurDavletshin No thanks 🤮😂

@TimurDavletshin Ай бұрын

@@Beldoras well, like it or not, you have little choice.

@Beldoras Ай бұрын

@TimurDavletshin no choice? 😂 we do actually we just don't watch it 🤣🤣

@foxied Ай бұрын

@TimurDavletshin fortunately, I actually don't watch Hollywood movies (I am not interested in western culture at all. I love Japan and Asia, that's it). I don't think it has to do a lot with just culture. My mom has blue eyes too and I like it, I think

@Embassy_of_Jupiter Ай бұрын

honestly I think it's just a beauty thing. gold is extremely rare and precious and so is lapis lazuli. blue in general is extremely rare in nature, except for the sky. the sky has always been associated with divinity. must have been mind blowing for people back then to see blond and blue eyed people. imagine if someone showed up today with eyes sparkling like diamonds and neon glowing white hair or something. that must have been how alien those features seemed to people back then.

@MrMonkeybat Ай бұрын

With hair the colour of golden sun rays, eyes as blue as the sky and skin as white as the clouds I have obviously been chosen by the sky gods. Placate them by giving me lots of young women to sleep with. No not that red headed fire god shaman over there.

@Cobalt1520 Ай бұрын

yes, that's the most plausible explanation for the spread of blue eyes in Europe. It's nothing to do with sunlight, or seeing better in the dark, or being better hunter... no, blue eyes won't give you super powers, on the contrary, they do originate more sight problems than brown. But they are more attractive, usually. Another important cause for blue eyes spread is that some genes that control melanin in skin and hair also influence melanin in the eyes, and so as Europeans became paler so did the eyes become lighter.

@MrMonkeybat Ай бұрын

@@Cobalt1520 Indeed the idea that light reflected off your iris could have any beneficial effects to vision completely ignores the most basic principles of optics. If their are any beneficial effects of the gene apart from beauty they are secondary and less visible few genes effect only one attribute. The process of domesticating animals often seems to lead to depigmented traits. But the direct effects of depigmenting the iris can only increase scattered light which is only detrimental to vision. Fortunately in most people with blue eyes it is on the top layer that is depigmented so it is still mostly focused light getting past the pupil but there might be some light getting reflected back off the lens my blue eyed siblings seem to complain about glare when it is sunny a lot more then me.

@Tugela60 Ай бұрын

Everyone has blue eyes. It is a structural color, not a pigment. The only reason some eyes don't appear blue is because the structural color is masked by pigment. The blue is revealed if pigment is not there. This is why some peoples eyes change color as they age.

@robertewalt7789 Ай бұрын

I imagine the Chinese, used to millions of brown eyed, black hair people, meeting Europeans with blue eyes, blond hair. After getting over that shock, the Europeans tell the Chinese there are also people with green eyes, red hair. Mind blown!

@johnbulger8044 Ай бұрын

Wow! Which part of Scotland are you from my friend? Do you speak Scots Gaelic? I studied Irish Gaelic for a year at UCLA. You have a very strong accent, but as I listen carefully, I'm able to understand about 95% of what you say 😀 Thanks for all your hard work on the channel!

@celtichistorydecoded Ай бұрын

Thanks. I don't, I wish I could though. I will need to learn a bit outside of the few words I know. I was born in Falkirk and I have worked in Glasgow etc.

@lugo_9969 Ай бұрын

Irish viewer. My 4 grandparents had blue eyes. I reckon it's to do with light cos when I holiday in sunny places, the sunglasses are essential. Otherwise, the brightness kills me.

@CharlesBryan1 Ай бұрын

I think the "light theory" explains where evolution of blue eyes kicked in, but the attractiveness came afterwards.

@bla-bla-bla... Ай бұрын

I think the sun-light/radiation natural condition is the only explanation and there isn't a coincidence that the blue eyes and the blonde hair is a north characteristic, and the polar animals (fox, wolf, rabbit, owl, bear...) are of white color and its has light eyes, some even blue.

@valdasendriulaitis50 Ай бұрын

If the light theory is true why didn’t it also pop up all across the tundra area of Asia and North America., but instead there you have only a brown eyes

@bla-bla-bla... Ай бұрын

@@valdasendriulaitis50 for them, the time they passed there is too short. The northern peoples went there from the central Asia, relatively recently. The ancestors of Yakutia, for examples, where nearly Caspian sea 2 thousand years ago, the ugric peoples moved toward ural from baycal lake. The finic peoples (ramification of ugric) have a high level of blond/blue. The cave peoples lived this way 40 thousand years, and they stayed isolated in Scandinavia and the islands around, caught there by the melt of ice sheet/rise of water level, for at least 5 thousand years. The scale of time is very different. The opposite process, you have the european genetic Rb nearly Chad lake and the genetic adapted to the equatorial climate.

@DasDutchman56 27 күн бұрын

Blue eyed here. Dutch & Danish Ancestors.

@deathdeathington Ай бұрын

I heard a theory that blue eyed people could have more likelihood of passing on their gene to future offspring by selecting for other blue eyed mates. Since blue eyes stem from a recessive gene, both parents sharing that gene should produce a blue eyed progeny.

@kifi672 Ай бұрын

both parents do not need to have blue eyes to have children with blue eyes, as long as there are blue eyes in both families.

@nosotrosloslobosestamosreg4115 Ай бұрын

@@kifi672 yeah, but it's still recessive.

@kifi672 Ай бұрын

@@nosotrosloslobosestamosreg4115 it is, that's why it has to be present in both sides of the family

@theredknight9314 Ай бұрын

Or, like me, have a broken gene that ensures blue eyes will always occur

@VeritasIncrebresco Ай бұрын

Two brown eyed people can produce blue eyed children, but both need to have the recessive gene. Wheereas two blue eyed people can only produce blue eyed children

@Cicco2008 28 күн бұрын

I'm from Calabria in Italy - which is very southern Italy - and all my family, most relatives and many people in our town have blue eyes.... Like many people have said, I, too, prefer low light/lamp light to strong/bright light ...

@seanlander9321 23 күн бұрын

Why did green eyes develop?

@ernestoleguizamon3976 Ай бұрын

I have brown eyes and the winter months even in the deep south of the US, where I live, can make me very somber.

@TheSandkastenverbot Ай бұрын

Great video, thank you!

@celtichistorydecoded Ай бұрын

Thanks

@tonycooke8545 14 күн бұрын

Bluey here. The upside of being sensitive to bright lights/sunlight, is having extremely good night vision. I can walk around a dark room/house, with no problem whatsoever .

@alexblue6991 Ай бұрын

My name is Blue and I have Blue eyes and I'm from Scotland

@synaestesia-bg3ew Ай бұрын

My name is brown,my eyes are brown and I live in New Brunswick, Canada. True story

@janetgray2184 Ай бұрын

Prove it

@elizabethdavis1696 Ай бұрын

Great topic are you going to do other eye colors and hair colors as well?

@celtichistorydecoded Ай бұрын

Thanks Elizabeth. I am, I have a whole series of videos planned

@j.p.h.8126 28 күн бұрын

Im a Finnish guy and i have blue eyes. My sister has green eye. And yes i think the colour must have something to do with the lack of light during winter in northern Europe.

@jamescoull7402 28 күн бұрын

I’m from Scotland. I have blue eyes. This was a very interesting video. Thank you for the knowledge. Lots off good comments. Peace

@celtichistorydecoded 27 күн бұрын

Thanks

@lo-fihi-ki5699 Ай бұрын

blue eyes see better at night and were adapted for dark environments

@infobeam1902 29 күн бұрын

Maybe slept through the day as a survival method….

@TJ-Judge Ай бұрын

My mother had light blue grey eyes.. and she was very light sensitive

@SamuelHallEngland 12 күн бұрын

In 2015 my friend was adamant that blue eyes developed in one individual only 5,000 years ago because one scientific article said so. I told him that that seemed like far too short of an amount of time for so many people to have blue eyes today, and that older DNA in older skeletons hadn’t been discovered yet. I’m glad they’ve been found know haha! And blue eyes are probably even older than 50,000 years ago too!

@anonymous-uo7cb 27 күн бұрын

Very interesting!

@celtichistorydecoded 27 күн бұрын

Thanks

@Rosternumberone 28 күн бұрын

Hunting in low light would select upon larger pupils while low light conditions of high latitude or cloudy areas would select upon blue eyes for vitamin d production. People that were exposed to a lot of solar radiation like in the savanna or in sunny snow covered ground conditions or farming all day, would have to be better protected with brown eyes and eyes that were less sensitive to light.

@aimaction7393 26 күн бұрын

GREAT ACCENT ! A NICE VIDEO.

@WesCOX-mm4oz Ай бұрын

My wife and her family are blue eyed american indians, but mated earlier with Germans.

@dexterdexter9760 Ай бұрын

I don't agree with your theory. If that was the case Eskimos, people form Siberia, native people of Canada, Australia and New Zealand would all develop blue eyes because of shorter days. Also in Northern Europe there is a lot of snow which reflect a lot of light so it isn't lack of light. My theory is caves that people lived in during ice age in Europe.

@MrMonkeybat Ай бұрын

The night vision, theory is completely implausible, light reflected off the iris has no benefit to vision optics just does not work that way, that's up there with paint it red to go faster. It is either a side effect of some other beneficial affects of the gene which could include night vision, it is close to the brain less melanin in the brain could affect behavior, depigmentation is often seen in animal domestication. But most likely it just makes you pretty, sky blue eyes might have given you a shoe in to the position of shaman of the sky gods.

@shantiescovedo4361 Ай бұрын

There is another conversation about this. Those peoples who live in more snow covered areas have an excess of light.

@celtichistorydecoded Ай бұрын

Good points, thanks. My theory is a working one :) and there are probably other variables at play as well, although I would still say low light is a major driver. Perhaps when you get very far north the sensitivity of lighter eyes becomes an issue with snow blindness etc. Europe may be in sort of a Goldilocks zone for blue eyes, where it is cold and has low light but not as extreme as other places, and the landscape is more conducive to blue eyes being selected for over time.

@JamieR2077 Ай бұрын

Don't forget Northern Europe has dense forests and often cloudy skies. Not sure how cloudy the tundra is, but I don't think there are many closed canopy forrests! Also, the mutation may never have developed in the Eskimo population.

@MrMonkeybat Ай бұрын

@@JamieR2077 Scattered light does not create an image. There is no way for light bouncing off your iris to help you see in the dim.

@R_Arizona 29 күн бұрын

I have worked grave yard shift for many years, and I prefer being out at night. I'm in Arizona and the day definitely causes me pain in the eyes.

@aussietaipan8700 27 күн бұрын

I have deep blue eyes; this is a throwback beyond my mother and father who both had light brown eyes. My Irish Grandfather and Scottish Grandmother on my mother's side both had blue eyes. On my father's side, my grandparents, both 3rd generation Australian had light brown eyes. The theory that low light may be the reason behind blue eyes is plausible, but I think in modern ages is pure genetics.

@jonbinki9651 Ай бұрын

My dad is 50/50 Frisian/ Hungarian, my mother is 100% Czech... everyone in my family has blue eyes, except my mom and brother, they have bright green..

@matej5775 15 күн бұрын

Czech here, 80% family blue, 10% brown 10% green

@dyvimtarkan2944 Ай бұрын

My 4 grandparent eyes were blue, my 2 parents eyes are green and mine are darker brown and each generation was born further north than the previous one. I think genetic is a little more complicated than that.

@willbass2869 25 күн бұрын

Milkman

@Stormpriest 7 күн бұрын

I'm blonde and blue, and I can tell you that during the 30 years I was on the road, I was surprisingly adept at night. Running dark trails under a new moon with almost no issue. I would say that the adaption to a lack of light, is probably pretty accurate

@thomasmacdiarmid8251 25 күн бұрын

I suggest that a lot of the evolutionary pressure is for being able to be productive indoors and at night. Needing to be active during moonlight and by lamp-or fire-light to weave, sew, make ropes, fix nets and hunting gear, sharpen plows and planting sticks etc., put a premium on being able to see in low light. The more southerly areas have more daylight even in the midwinter, and most of the near-tropical areas are dry, so that there is plenty of time for productive efforts when the sun is out. Also, there is a counterpressure for brown eyes where there is a lot of strong sun and glare - deserts, savannah, plains, tropical and near-tropical, and areas covered with snow or ice - brown eyes are protective for the very same reason that they hinder night vision compared to blue eyes.

@Kurikost_ 27 күн бұрын

it should be easy to make a test which eyecolor has the better eyesight in low light

@AliceRose413 Ай бұрын

I have blue eyes, I live in the southern US.. I wish I wasn’t affected by seasonal depression, but it definitely plagues me every year. Awesome info! Thanks for the video. Oh and yes I am very sensitive to the light and spend a lot of time out at night and feel more comfortable at night.

@celtichistorydecoded Ай бұрын

Thanks

@lovelytouch9366 Ай бұрын

Im blonde with green 💚 eyes and much prefer the dark and rarely have lights on in the evening because i get headaches. I most definitely have to wear sunglasses outside on sunny and often cloudy days. 😎

@sirrodney3443 Ай бұрын

Im 61, Born in Oakham, Rutland, England, adopted from birth and raised by a caring couple. My eyes are a nightmare blue, I've had nothing but confrontation all my life, if I had a pound or dollar for every "Who/what you looking at?" I could have a small field and peace. However, my real mother, from the North East of England, found me when I was 44, sadly it was an awkward and heartbreaking reunion with both of us left with more questions than answers. One thing that shocked my socks off though, was the fact that she was from the travelling community and that her birth certificate named the lane her family wagon stopped in for her birth. I found I have 3 half sisters and I keep in touch with one of them, the eldest, and she has the same eyes as me and everybody wants to be her friend. Funny old world.

@sweetlou1074 Ай бұрын

My wife and I have blue eyes and so do our kids . I have been completed on my blues eyes a lot lol

@Centurion101B3C Ай бұрын

Hm, It is imho atractive to emphasize on external application of eyesight for hunting and other outdoors activities, but what about internal (or better; in-home) advantages of better eyesight. When it is dark outside, most social interactions (among which procreative efforts and courtship) take place inside and these being low-light conditions would give a higher susceptibility of light under in-home conditions a more generic advantage. The other thing is that in-home activities often form the essential preparation possibilities for outdoor ones and better preparations that way through better eyesight in low-light conditions, would significantly add to outdoor success and with that form an elevated evolutionary pressure on acquisition of blue (or lighter hued) eyes. In Northern lattitudes the mainstay and duration of activities would be in the protection of the indoors because of lack of outdoors light in Winter time, thus favouring those with lighter eye-colour.

@JohnPaul-158 Ай бұрын

Thanks! Yes, I think the light has effected the eye color. I just saw a video, about 2 weeks ago, the guy was saying that due to the decrease of light, especially in northern Europe, has enabled blue eyed people to be able to see better in low light/night time.

@jimcottee9187 19 күн бұрын

My brother & sister used to tell me I was adopted as I had blue eyes to their brown. Little did they know that I could see the light behind their shadowy mischief.

@hughkelly9073 27 күн бұрын

The advantage of seeing better in low light seems the likely selection pressure.

@jattikuukunen 13 күн бұрын

A mutation in the HERC2 gene adjacent to OCA2, affecting OCA2's expression in the human iris, is found common to nearly all people with blue eyes.

@russ549 21 күн бұрын

I have a very light complexion. Blonde hair and blue eyes. I've found the only place i dont get sun burnt on my face and kind of blind feeling is under the giant old growth redwood and fir forests of coastal northern California where i am from. Long hours under florescent lights burn my nose, and hurt my eyes. Anywhere there arent alot of tall trees is uncomfortable too. The beach, the river just about everywhere. Its the dark green of tall trees that is the only thing comfortable to look at. The trees have to be tall because to much open sky is to much for my eyes and skin. Maybe blue eyed people evolved under old growth forests? Maybe on the coast where there isn't alot of snow?

@mrwelshmun 22 күн бұрын

i have grey/blue eyes and i definitely struggle in bright conditions. in cloudy conditions i'm fine

@Xenoyer 29 күн бұрын

Very interesting! I have deep blue eyes. My ancestors were Pict. I noticed something about my eyes today. When I come indoors from the bright outside light, I see a ring of light in my vision. It is like a donut shape in the middle of my vision. Then it slowly fades away after I've been inside a little while. Maybe what I am seeing is my iris. The darker spot in the middle is my pupils.?

@mjinba07 24 күн бұрын

Another thought is that if a genetic mutation doesn't bring any disadvantage, it's just as likely to be furthered along in the population. So while blue eyes may provide some evolutionary advantage by helping vision in low light, it's also possible that a mutation occurred in a particular population and then gradually spread with them to other populations geographically.

@anthonyodonnell6105 25 күн бұрын

Very intelligent commentary, well prepared. I have to think that while blue eyes may be striking, fair hair is even more so.

@freepagan Ай бұрын

Admittedly, I'm kinda jealous of people with blue eyes. I have plenty of family members whose eyes are blue, but mine are just plain brown.

@celtichistorydecoded Ай бұрын

I like brown eyes

@sheilaroddick5853 29 күн бұрын

My brother and three sisters have brown eyes and I am the only one with blue eyes so the milkman must have been my father.

@willemakkermans4067 Ай бұрын

Besides the sexual attractiveness theory, one can also theorise that blue-eyed babies are attractive, leading to a higher survival rate. Mating is one thing, making it to sexual maturity in the first place is quite another, and historically perhaps more important. Another fact to back up this theory is that a lot of babies start out blue-eyed, and only later progress to green or brown.

@omar-uu8qo 25 күн бұрын

Is most beautiful eye color by far

@ronaldwinfield307 Күн бұрын

My ancestry is a mixture of English, Scottish & German. I have blue eyes. I do have extra light sensitivity. It is not at all problem on sunny days if I wear Optometrist approved sunglasses . At night time it is really nice. At a time in life when I fought wildfires at night I was grateful for my extra light sensitivity. The need for blue eyes is obvious in Europe's climate. For a recessive gene to however become dominant like it did it in Europe must have involved some divine intervention.

@marcpadilla1094 Ай бұрын

Mutation,adaptation, to low light and snowy conditions. Brighter hair color and skin also accompany these adaptations. Humans are like animals and adapt to their specific natural and unnatural environments.

@MizMissiB 7 күн бұрын

I have dark blue eyes and a fairly dark complexion. My mother is Italian and my father was Scottish. My eye color came from my father and my skin complexion from my mother.

@shonuff5297 Ай бұрын

The light theory works except for Siberian and Inuit people. Although the Siberian Husky also has blue eyes. The hunter theory works I suppose. I also wonder if the seas have anything to do with it.

@generalnguyenngocloan1700 29 күн бұрын

It was an advantage. Northern climates have lower light and shorter days. It gave the indigenous humans an edge to hunt, work, and survive thousands of years ago.

@charleshite7944 Ай бұрын

I have blue eyes and can see well in the dark. People also say they change color with my mood. Women have commented on my eyes many times over the years. 👍

@paulfri1569 Ай бұрын

Same mate. My Change from light blue to green depending on conditions or mood.. This is a incredible human adaptation and no wonder brown eye girls go wild for men like this..

@user-bi7lc2ht4b Ай бұрын

Eyes of the Germanic forest barbarians!

@forakermm Ай бұрын

My Irish dad has brown eyes as does my Italian mother I ended up with grey eyes and all my siblings have brown eyes. I married a red head with brown eyes and both my kids have blue eyes. (And I love the fall & winter because it’s darker)

@copa593 10 күн бұрын

I'm Greek and have blue eyes, my ancestors are from the Peloponnese and Anatolia. Kind of hard to explain, since both are areas with a lot of sunlight.

@marcustulliuscicero5559 9 күн бұрын

That’s where the mutation first took place

@waynemcauliffe-fv5yf Ай бұрын

Australia has a few blue eyed people in this hot joint but they all hale from Northern climes

@indigocheetah4172 Ай бұрын

In Queensland, of all places, with a strong blue eyes and red hair. From the Scottish, and Europeans.

@waynemcauliffe-fv5yf Ай бұрын

@@indigocheetah4172 Tell me about it mate i`m of the Irish

@indigocheetah4172 Ай бұрын

@@waynemcauliffe-fv5yf, my apologies. I meant to add the Irish, as we have a few Irish clubs in Queensland. I'm a redhead with blue eyes.

@waynemcauliffe-fv5yf Ай бұрын

@@indigocheetah4172 All good mate. I`m bald with bloodshot eyes a lot . The Irish in me

@indigocheetah4172 Ай бұрын

@@waynemcauliffe-fv5yf, lol.

@roelantverhoeven371 16 күн бұрын

interesting thing I find, is how despite being two small neighbouring countries, the netherlands has over 60% blue eyes and Belgium only 25! on the other hand Belgium has far, far more red hair and green eyes than the Netherlands... so the germanic/celtic differences are still there from before the Roman conquest of the area. i'm an interesting case myself, my hair is dark brown and curly, my eyes light blue and my skin relatively dark compared to the others here but freckled, I am from Antwerp, north of Belgium.

@matej5775 15 күн бұрын

Interesting. You're living in a culturaly and geneticaly diverse trading spot of europe, makes sense

@francescobalboni5189 Ай бұрын

In 1995 I went on holiday to Tanzania. I went to see an archaeological area where remains of ancient hominids had been found.The custodian of that archaeological area was a typical African Bantu.But he had blue eyes!!!!

@josephsmith688 Ай бұрын

Explains why i don't like driving at night with brown eyes^^

@edwardteach8028 Ай бұрын

I'm gonna go with the "Babylon Theory"

@paulfri1569 Ай бұрын

The original true Israelites?

@deealex1402 Ай бұрын

hello from finland, brown eyes here :D

@celtichistorydecoded Ай бұрын

Love it

@TubeOnRichard Ай бұрын

So how do you account for intuits with dark eyes and skin?

@willemakkermans4067 Ай бұрын

By being isolated from the common ancestor(s) mutation. Perhaps by different cultural standards as well, not accepting strong divergence or not finding it attractive?

@domenicbellino4703 Ай бұрын

snow blindness your eyes turn blue or a grey ,its a northern hemisphere where there is snow and dark

@Valkyraw 15 күн бұрын

turkish from the central anatolia region, half of my family got blue eyes.

@ellen4956 29 күн бұрын

I think it's related to seeing better in the dark. Possibly even so that people could hunt at night, since some hunter-gatherers had darker skin and blue eyes. It makes sense.The "attractiveness" factor doesn't seem like it could be a reason, since it depends on what the rest of the person looks like. But it makes sense that it's regional too.

@stephaniewyke8357 Ай бұрын

Blue eyed lady hear 💙🙌

@michaellawson6533 Ай бұрын

Viking blue here.

@induchopra3014 Ай бұрын

In india , kaahmiris,hilly people,pandits have blue eyes

@WarDog793 Ай бұрын

Pretty good analysis. I wonder though, do the Sami people (AKA Laplanders) have a strong trait for blue eyes since they live so far north in Scandinavia?

@diamondsarenotforever8542 26 күн бұрын

Most of them have dark hair and eyes.

@Tbh793 Ай бұрын

Kuzey yarıkürede doğal koşulların sonucu bir mutasyonla oluşmuş ama doğal seçilimle yayılmıştır.En mantıklısı bu görünüyor.Işığın ve soğuğun etkisi.Ama çoğalıp yayılması doğal seçilim.