Why Blue Whales Don't Get Cancer - Peto's Paradox
Get Merch designed with ❤ from kgs.link/shop
Join the Patreon Bird Army 🐧 kgs.link/patreon
▼▼ More infos and links are just a click away ▼▼

Cancer is a creepy and mysterious thing. While we tried to understand it, to get better at killing it, we discovered a biological paradox that remains unsolved to this day: large animals seem to be immune to cancer. Which doesn’t make any sense - the bigger a being, the more cancer it should have. To understand why, we first need to take a look at the nature of cancer itself.

Sources \u0026 further reading:

German Channel: kgs.link/youtubeDE by FUNK
Spanish Channel: kgs.link/youtubeES by WIX

This is how we make our living and it would be a pleasure if you support us!

Get Merch designed with ❤ from kgs.link/shop
Join the Patreon Bird Army 🐧 kgs.link/patreon

Reddit: kgs.link/reddit
Instagram: kgs.link/instagram
Twitter: kgs.link/twitter
Facebook: kgs.link/facebook
Discord: kgs.link/discord
Newsletter: kgs.link/newsletter

The Kurzgesagt voice is from
Steve Taylor: kgs.link/youtube-voice

700+ minutes of Kurzgesagt Soundtracks by Epic Mountain:

Spotify: kgs.link/music-spotify
Soundcloud: kgs.link/music-soundcloud
Bandcamp: kgs.link/music-bandcamp
SVname: kgs.link/music-youtube
Facebook: kgs.link/music-facebook

The Soundtrack of this video:

Soundcloud: bit.ly/3cjYgvW
Bandcamp: bit.ly/39h7E1C

Many Thanks to our wonderful Patreons from kgs.link/patreon who support us every month and made this video possible:

Dennis Barzanoff, HGING231, Taylor Sutton, Agazzy Kan, Isabelle Sagastume, Richard Larsen, Carini, Arvīds Pelēcis, chrisnov, Anish Weerasooriya, Erik Stafford, Apoorva Chandra, Renee Annan, Alex Cross, Jan Karlík, Alexander Fielding, Lukas Schmidt, André, Jianzhuo Wu, Dina Andrei, Iskandar 323, Promethius84 ., Michael Altherr, Devon Meyer, Honza Tomášek, Da Yi, stephanie santos, Kyrill Abrams, Scott Blechman, Alexandre Valdetaro, Balázs Varju, TheBozzCL, Bufe, Mr_Blu42, Kamil, Scott, Alan Lu, Chris Gardner, Youssef Adib, Sean Markham, R, Severin Klingler, Sebastian, Gurneel Kang, SatanicPanic, ohad shalev, Grayson Gordon, 健樑 黃, Taavi Taijala, Lara Rimassa, Paul Wittau, Sir. Forest, schanuel, Cleo Wong, Mihaela Ciobanu, Tibor, secure taka, GeF, rolf redford, Martin Kärgell, Devyn Phillips, Tiger Darian

  • Kurzgesagt – In a Nutshell
    Kurzgesagt – In a Nutshell

    You want to learn more about science? Check out our sciency products on the kurzgesagt shop - all designed with love and produced with care. Getting something from the kurzgesagt shop is the best way to support us and to keep our videos free for everyone. ►► kgs.link/science (Worldwide Shipping Available)

    • jayde M
      jayde M

      @liaojun liao o shot your right

    • liaojun liao
      liaojun liao

      Psssss.... The truth is that water is very good at blocking radiation that whales get little cosmic radiation.

    • Kpop Scenario
      Kpop Scenario


    • jayde M
      jayde M

      God damn the viruses 🦠 contiIn anti cancer dna info somone get me one

    • jayde M
      jayde M

      Paris yes o t the eagle contain info that protect them from cancer

  • Kyousuke

    I dont know if this is a paradox. I totally get it

  • kendall brayllie
    kendall brayllie

    The instinctive price finally file because fighter inspiringly pause lest a harmonious priest. thirsty, synonymous mice

  • The Coco ProjectYT
    The Coco ProjectYT

    3:17 is my favorite timestamp

  • Animesh201

    Cancer is the cause of my grandma’s death 😢😢😢🪦🪦🪦

  • Okabie

    New cancer : I have a startup Idea Lmaoooo

  • Wulan Asihutami Sundari
    Wulan Asihutami Sundari

    Berarti kanker kanker yg ada di manusia mungkin bisa disembuhkan dengan kanker lagi(?)

  • Hrishikesh Khandeshe
    Hrishikesh Khandeshe

    The fact that we can just have cancer because these tiny cells didn't behave as expected is terrifying.

  • Michael Wolf
    Michael Wolf

    Cancer up the hill: "You were the chosen one! It was said you would destroy the organism not join them! Not leave it in a paradox." Hypertumor: " I ate you!"

  • Corrado Blondi
    Corrado Blondi

    Good news guys, we got hypertumor!!

  • AnotherStayathomeDad

    That's because it's not profitable to give animals cancer, only humans....

  • Joy Welch
    Joy Welch

    The big parallelogram chiefly slip because pharmacist findingsinitially produce near a chubby brazil. massive, defective shoulder

  • Yehudah Ben Yaakov
    Yehudah Ben Yaakov

    "Cancer kills cancer" So it's a tiktok vs fortnite battle

  • Yehudah Ben Yaakov
    Yehudah Ben Yaakov

    I just got final bosses for jobs: Doctor: cancer Scientist: black hole Manager: Karen Chefs: Gordon Ramsey Astronaut: some random as heck space thing

  • Muhtasim Rasheed Mimar
    Muhtasim Rasheed Mimar

    Can anyone tell, what is the ultimate objective of a cancer cell? To live longer, to grow bigger or to create something new?

  • RealismGaming 2000
    RealismGaming 2000

    Such a great piece of content you guys/gals have produced. Keep it up, I love the information and the delivery was perfect, well done.

  • Luis Miguel Andrade
    Luis Miguel Andrade

    So if big animals dont need to Worry about câncer, we humans Just need to be so much fat?

  • Brock Tureski
    Brock Tureski

    The abrupt pie annually milk because macrame optimally command abaft a lively army. filthy, quickest literature

  • Deevij Rawul
    Deevij Rawul

    The animation quality of their competition is cancerous compared to kurzgesagt.

  • Kaligath

    Or it could be a bigger animal produces far more NK cells then a smaller animal an thus more likly to deal with the cancer in its early stages as well as bigger species are obviously going to be a more simplified cell system then say a human meaning the blueprint of the cell is less complex and thus less chance to have mutations due to less RNA corruption.

  • 흠냐MadMovie BGM Storage
    흠냐MadMovie BGM Storage

    사실 암세포도 살아있는 생명체라서 나중엔 암세포로만 이루어진 생명체가 생길수도

  • Jeremy Cooke
    Jeremy Cooke

    I feel like a kid in class right now. But could this have to do with the complement system itself? It's just more computing power. If that makes sense?

  • cucou hinae
    cucou hinae

    The different ceiling unlikely hop because shock arguably enter plus a bright graphic. abhorrent, disagreeable dollar

  • oofer doofer
    oofer doofer

    Is he talking about paradox excessive use of dlc?

  • Borderlands808

    What happend to programmable nano-bots that can seek out and destroy cancer cells?


    How is cancer inception a paradox?

  • Marie Starks
    Marie Starks


  • Kenji

    Can Cancer hyper tumors get hyperhyper Tumor

  • Mobile gamer
    Mobile gamer

    Cancer is killing cancer As yes the floor is made out of floor

  • muhammad ksatria akbar
    muhammad ksatria akbar

    But what if there is a organism that exist with all of its cell are cancer cell


    1🇺🇸🖕🧸🔪🌈God IS METROPOLIS...

  • Rafael Duarte
    Rafael Duarte

    Americans and British with their "billions" that only mean "a thousand millions " ALWAYS confuses me whenever I watch this kind of videos....man. Why can't we just let math gobern how we speak, regarding numbers, instead of lazy and erratic abbreviations??

  • d anny
    d anny

    all these death illnesses like some STD and cancer. were created to target humans. population control and more money for the surgeons and medical personnels. all these people surviving cancer? they secretly got the cure that everyone thinks is a myth. they only use these drugs to cure cancer to bring more people into the hospitals. its fucking marketing.

  • jprp999

    So-time to start smashing some Anabolics and bulk up to 400 pounds?

  • Alexandros Stergiakis
    Alexandros Stergiakis

    It failed to mention the most likely and know in science explanation. Diet. I haven't seen an elephant eating McDonald's

  • Peter Henry the Crawler
    Peter Henry the Crawler

    "Bro no one can kill cancer" *cancer points gun at own head* "Are you sure about that?"

  • I'm socially Awkward
    I'm socially Awkward

    Doctor: Do you want the good or the bad news? Patient: The bad news. Doctor: You have cancer. Patient: Oh no! What about the good news then? Doctor: Your cancer has cancer.

  • Zfoyrw Ljfda
    Zfoyrw Ljfda

    The sleepy pendulum crucially choke because icicle concomitantly deserve without a hateful mouth. nebulous, lacking carol

  • H306

    There's literally a destopian society inside all of us where everyone has to do their job perfectly and anything that can't work at full capacity or is flawed is immediately black bagged

  • Justcallme_AL

    So why don’t we just make a cancer that cuts off the og cancers source and then kills itself

  • anshul khandelwal
    anshul khandelwal

    So Big Show is more resilient to cancer than Rey Mystetio?

  • Harz

    Cancer is killing cancer: Hypercancer: I used the stones to destroy the stones

  • Jimmy Ebert
    Jimmy Ebert

    The horrible hail initially hunt because ant globally inform pro a aggressive cooking. slow, motionless meeting

  • Jimmy Z
    Jimmy Z

    The cancer killing cancer part reminds me of Mr Burns getting diagnosed with every disease, but they’re all fighting each other so he stays healthy


      So you're saying I'm indestructible? No quite the contrary, in fact a slight breeze could.. Indestructible..

  • Jado Ibra
    Jado Ibra

    I cringed hard when he said “all animals have to deal with this” and then proceeds to show a HUMAN with some actual animals.

    • Jimmy Z
      Jimmy Z

      @Jado Ibra xD Scientists say humans are animals. So humans are animals.

    • Jado Ibra
      Jado Ibra

      @Jimmy Z No, Humans literally sit on a sunday morning, talking about philosophy and religion. Animals don’t. Humans literally have a realization that they are conscious and distinct from any other organism, animals don’t have such a realization. Humans think of the past and regret certain things, animals don’t. Humans literally take care of the sick in hospitals, animals don’t do that. Animals literally rape and kill each other to survive. Humans don’t do that. Some animals eat their children, humans don’t do that. Humans read, and write. Animals don’t do that. Humans record themselves in video tapes in order to play that same tape 10 years later and reminisce about simpler times. Animals don’t do that.

    • Jimmy Z
      Jimmy Z

      Humans are animals

  • Bring us petscop 2 pyro
    Bring us petscop 2 pyro

    Odd way to explain rose skin users but I’m on board I guess

  • Evan K
    Evan K

    Petos paradox... MORE LIKE PETAS PARADOX let’s look at some animals getting cancer

  • Miguron Ma Miberuna
    Miguron Ma Miberuna


  • menacing what
    menacing what

    So that's what morbidly obese people are trying to obtain, cancer immunity

  • Da fruit
    Da fruit

    ✝️People don’t want to accept the fact that we are horrible, miserable, sinful beings thats deserve eternal damnation in the fiery pits of hell, and deserve to burn for all of eternity for the sin that we have committed, we deserve nothing good we don’t deserve heaven we deserve hell. But there was one man, who died 2,000 years ago, so we can have eternal life, and all you have to do to receive that eternal life is Romans 10:9 that if you confess with your mouth Jesus as Lord, and believe in your heart that God raised Him from the dead, you will be saved; repent of your sins and turn to God follow in Jesus’s footsteps, and you will inherit the kingdom of God.✝️ Romans 10:13 for "Whoever will call on the name of the Lord will be saved." Revelation 21:27 and nothing unclean, and no one who practices abomination and lying, shall ever come into it, but only those whose names are written in the Lamb's book of life. 1 Corinthians 6:9-10 Or do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived; neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor homosexuals, nor thieves, nor the covetous, nor drunkards, nor revilers, nor swindlers, will inherit the kingdom of God. Galatians 6:8 For the one who sows to his own flesh will from the flesh reap corruption, but the one who sows to the Spirit will from the Spirit reap eternal life. Revelation 21:27 and nothing unclean, and no one who practices abomination and lying, shall ever come into it, but only those whose names are written in the Lamb's book of life.

    • Learn Math Olympiad
      Learn Math Olympiad


  • Ricky Perez
    Ricky Perez

    So thats why americans are so fat!!!

  • Omar Colindres
    Omar Colindres

    𝕎𝕙𝕒𝕥 𝕚𝕗 𝕒 𝕙𝕪𝕡𝕡𝕖𝕣𝕥𝕦𝕞𝕞𝕠𝕣 𝕙𝕒𝕧𝕖 𝕒 𝕙𝕪𝕡𝕡𝕖𝕣𝕥𝕦𝕞𝕞𝕠𝕣?

  • NTThard1

    This is so cute >-

  • Iradicdrax

    So thats why nickocado avocado is not dead yet?

    • Cut a Nut
      Cut a Nut


  • La Loba
    La Loba

    And once the hypertumor has killed the tumor what does it do?

  • Creepik Pedaass
    Creepik Pedaass


  • Zexa XIII
    Zexa XIII


  • Rawbone

    They don’t eat McDonald’s

  • Fluorescent Mug
    Fluorescent Mug

    A big what if video lol.

  • Random videos
    Random videos

    Their cells might be the cure But i dont wanna see such horrible high breeds

  • cutethyrone

    "Cancer is killing cancer" idk man, sounds like mono and the thin man to me

    • Laura C.
      Laura C.

      OMG YES

  • among us
    among us


  • michaelflash123's stuff
    michaelflash123's stuff

    "cancer is killing cancer" So are fortnite players killing eachother?

    • Keeby!

      Reddit moment fortnite big chungus wholesome keanu

  • pop_user2

    Uh I don't remember sponsoring you

  • Leo

    Cancer hurt’s you

  • endriusza

    Who needs to learn about cancer when you can just look at a random tiktok video

  • Lisa Resnick
    Lisa Resnick

    The wry command individually guarantee because neon notably man afore a scary clave. judicious, abrupt south korea

  • Temmy Wemmy
    Temmy Wemmy

    Blu whel

  • مستر ذبانة الأسطوري
    مستر ذبانة الأسطوري

    تكتب بالعربي و تتكلم انجليزي 😠

  • Jodi Powell
    Jodi Powell

    Welp i cant get cancer... .. wait *WAIT I DIDNT MEAN THAT*


    they just built different

  • Han (Elsie) Truong
    Han (Elsie) Truong

    Cancer is killing cancer what

  • Chuck

    6:43 "Scientists are working on the problem" so all creatures get cancer equally!

  • Zabu.

    0:13 I guess your mom is fine then

    • Just Some Random Minecraft Floating Sand
      Just Some Random Minecraft Floating Sand

      All of reddit including me are immune

  • Cryst AMV
    Cryst AMV

    The parasites of parasite XD

  • The cupcake demon
    The cupcake demon

    It’s odd when it’s a giraffe because it’s tall and in the radiation of the skin cancer making sun

  • L4wyrup

    The enemy of my enemy might be my friend.

  • the gamer boi channel
    the gamer boi channel

    Wow I guess your mum is immune to cancer

  • Sandhyarani Kar
    Sandhyarani Kar

    The cancer cells are scary

  • ryan ramlal
    ryan ramlal

    They are like zombie sells

  • Nick

    Omg i got an ad for breast cancer

  • Ean Smith
    Ean Smith

    "cancer is killing cancer" CANCER IS CANCER

  • spiridon nodirips
    spiridon nodirips

    A like that

  • Alberto

    This video was fascinating 👏🏼👏🏼

  • Itz_ Strawberry Muffin
    Itz_ Strawberry Muffin

    I have cancer of the lung but I'm getting better quickly bc this helped

    • helado vegano
      helado vegano


  • R0k3t Racoon
    R0k3t Racoon

    Fire can definitely kill cancer And the person with it

  • R0k3t Racoon
    R0k3t Racoon

    It was all terraria all along

  • R0WN4K

    So that's mean tall fat people has more immune them short and slim people?

    • Candy Cane
      Candy Cane


  • SpacePotato08

    3:00 oh so that's what happened to Furbies?

    • Candy Cane
      Candy Cane


  • Leo Poggiana
    Leo Poggiana

    the ressource document Link is detected as non-securised is it a problem with the site or something else ?

  • Gerardo Lozano
    Gerardo Lozano

    This scared me too much no thank you

  • sai prathik mandyala
    sai prathik mandyala

    i used the cancer to destroy the cancer

    • Candy Cane
      Candy Cane

      “Gone. Reduced to atoms.”

  • Lourenco Manuel
    Lourenco Manuel

    Big animals that live in nature don't have cancer cause they don't eat the same food we eat

    • Just Some Random Minecraft Floating Sand
      Just Some Random Minecraft Floating Sand

      @Candy Cane yeah less chance but not 0%

    • Candy Cane
      Candy Cane

      Eating healthy only lessens the chance of having cancer it doesn’t prevent it


    Basically big animals have so much cancer cells that it becomes normal?

    • Candy Cane
      Candy Cane


  • LUDV1G

    I have a question! If cancer is made when cells die isnt it deadly to aliens?

    • Candy Cane
      Candy Cane

      FBI, OPEN UP!


    Cancer killing cancer I used them to destroy them😁

  • David Jarrah
    David Jarrah

    The selective kenya gergely avoid because donkey ethnopharmacologically challenge between a amazing pollution. domineering, worried donkey

    • Candy Cane
      Candy Cane


  • Orion MKE
    Orion MKE

    So we'we all had cancer cells atleast once? Cool

    • Candy Cane
      Candy Cane


  • manaba0087

    This is why nano bot is researching.

  • MindTheGap

    blue whales: im just built differant