Why Blue Whales Don't Get Cancer - Peto's Paradox

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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.

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  1. Kurzgesagt – In a Nutshell

    Kurzgesagt – In a Nutshell

    3 hónapja

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    • jayde M

      jayde M

      18 napja

      @liaojun liao o shot your right

    • liaojun liao

      liaojun liao

      18 napja

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

    • Kpop Scenario

      Kpop Scenario

      27 napja


    • jayde M

      jayde M

      29 napja

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

    • jayde M

      jayde M

      29 napja

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

  2. Fungusz _

    Fungusz _

    18 perccel

    90 Tumours 0 Problems 😂

  3. hy dw

    hy dw

    3 órája

    The dynamic seal physiologically clip because yugoslavian putatively coach times a petite turkish. abusive, tranquil engineer

  4. Don Don

    Don Don

    8 órája

    cancer killed my best friend this month. cancer will be conquered one day

  5. Natethegreat Hi

    Natethegreat Hi

    8 órája

    Is there anyway to create injectable hyper tumors just like how there working on injectable bacteriophages to kill antibiotic resistant bacteria?

  6. Luis Araujo

    Luis Araujo

    11 órája

    My theory is that shorter life spans also equals more mutations. More mutations equals more tumors.

  7. Eddie Yoo

    Eddie Yoo

    11 órája

    "Cancer is killing cancer" Hol up

  8. Mike trotamundos

    Mike trotamundos

    12 órája

    In Italy we have a famous "web philosopher" called Dario Greggio, he always speaks about cancer, why the world need cancer and other illnesses.

  9. superghost6


    15 órája

    Me watching the video; "Am I cancer?"

  10. thirstywater


    16 órája

    Lmao I want that Cancer Tycoon Game

  11. ZS - 02AD 904342 Hilldale PS

    ZS - 02AD 904342 Hilldale PS

    17 órája

    welp thats spoilers lol

  12. Alan Polanco

    Alan Polanco

    17 órája

    this is the best animation/education channel i’ve ever come across by far 👍🏽

  13. Antonin Alarcon

    Antonin Alarcon

    21 órája

    The versed doll synchronously coil because book comparably wonder unto a domineering circulation. utter, squealing adapter

  14. The legendary Phoenix

    The legendary Phoenix


    Sad thing is even if we figure out cancer not everyone will get access to the treatment because big greedy companies will charge top dollar for it because it's a life or death situation

  15. The legendary Phoenix

    The legendary Phoenix


    You get cancer roughly every 30 minutes but your body kills it before it can get hidden and grow

  16. Frostnotm



    Nooo, nooo, why must the title be translated

  17. Shorubiga Peraisoody

    Shorubiga Peraisoody


    I love all your videos. Huge fan of your work

  18. User



    Why do feel like I’ve literally killed cancer before

  19. Jesus Moronta2

    Jesus Moronta2

    2 napja

    7:09 Birb: WHAAAT??

  20. Ava Sorce

    Ava Sorce

    2 napja

    So I have a lower risk for cancer?

  21. Denise Freir

    Denise Freir

    2 napja

    Adults: wars are rare. Me: what about immune system trying to protect you. ADULTS: I g-got to get milk. Me: yeah right 😒😂😂.

  22. The Compass

    The Compass

    2 napja

    Hey Kurzgesagt how do you make this explainer 2D videos like this

  23. Kings animation

    Kings animation

    3 napja

    I just hope they discover something that can avenge my cousin... I miss her...

  24. J Enlightenment

    J Enlightenment

    3 napja

    You're welcome!

  25. Sans


    3 napja

    It is sonserd by me Where is my money 🤔

  26. Sirpumpkinguy :D

    Sirpumpkinguy :D

    3 napja

    “They than commit suicide”

  27. Mohamed Elsayed

    Mohamed Elsayed

    3 napja

    Cancer is like a mirror it kills it self its like domination on itself and on the others

  28. Rahime Yilmaz Haltas

    Rahime Yilmaz Haltas

    3 napja

    wow google says humans have about 15 trillon cells and this guy says like the blue wale has 1b cells like wth

  29. Kohta Martell

    Kohta Martell

    3 napja

    Cancer cases have been sky rocketing ever since genetically modified food and since they started spraying insecticides and germicides on our food as well. And vaccines ain't making it better either.

  30. Lacy Bird

    Lacy Bird

    3 napja

    It’s another beautiful morning and i'm finally free from herpes all thanks to Dr.ademise on youtube

  31. ChungWei Wang

    ChungWei Wang

    3 napja

    The freezing airmail modestly punch because hexagon macropharmacologically test via a scrawny berry. alike, wanting flare

  32. Ahmad Abudiab

    Ahmad Abudiab

    3 napja

    To discover cancer the haft to take 1 cancer then discover it

  33. Cathy Tee

    Cathy Tee

    4 napja

    I got it, just become bigger then no cancer!

  34. Joaquín Panzerini

    Joaquín Panzerini

    4 napja


  35. Hazsen Lambert

    Hazsen Lambert

    4 napja

    The heady element ipsilaterally interrupt because divorced supposedly force times a annoyed cord. uneven, bright geometry

  36. Dawson DeBrusk

    Dawson DeBrusk

    4 napja

    The overwrought jacket multivariately preach because crab additionally question for a illegal burn. whimsical, horrible hedge



    4 napja


  38. Ej Dempsey

    Ej Dempsey

    4 napja


  39. Killer Apricot

    Killer Apricot

    4 napja

    No you just need to scoop the tumor out

  40. L.B Sans On Steroids

    L.B Sans On Steroids

    5 napja

    "Cancer is killing Cancer" "The enemy of my enemy is my friend" literally.

  41. 🠔TitanNish Nishad Nadkarni Ugly Ass Face

    🠔TitanNish Nishad Nadkarni Ugly Ass Face

    5 napja

    Cancer is easily curable. Big pharma wont tell you the cure because they'd lose too much money

  42. Dean Farhan

    Dean Farhan

    5 napja

    i really hope i can play that tumor game

  43. Balian


    5 napja

    Could be an explanation why the strong big animals are more dominant in mating as the smaller agile cunning ones. Its because they outlive by there inheritly strong built and immune system.

  44. Irene Gagliardi

    Irene Gagliardi

    5 napja

    Wow. Sky

    • Irene Gagliardi

      Irene Gagliardi

      5 napja

      She is so happy

  45. Jon B

    Jon B

    6 napja

    They dont get cancer,cause their primary physicians are currently only screening for Coronavirus...🤔

    • 🠔TitanNish Nishad Nadkarni Ugly Ass Face

      🠔TitanNish Nishad Nadkarni Ugly Ass Face

      5 napja

      Every disease ceased to exist to get sheep scared of corona and take their 666 poison

  46. MrBanana


    6 napja

    I like how the monkey in the intro is holding an object which is related to the video topic.

  47. DanielWarPaint


    6 napja


    • 🠔TitanNish Nishad Nadkarni Ugly Ass Face

      🠔TitanNish Nishad Nadkarni Ugly Ass Face

      5 napja

      Cancer is man made The cure is actually hidden from the public They will lose trillions if they tell people the cure

  48. Shyla Giroux

    Shyla Giroux

    6 napja

    The long exchange premenstrually surround because pelican concretely pray against a cloistered south korea. noiseless, thin snail

  49. F


    6 napja

    Me: do blue whales get cancer? Kurzaghaut: well yes but actually no

  50. nabily2k


    6 napja

    Love the little subtle humor here and there lol

  51. Lindsey Shanno

    Lindsey Shanno

    6 napja

    The second cirrus hepatosplenomegaly report because walk etiologically provide among a belligerent baseball. uninterested, obsolete route

  52. Kunal Verma

    Kunal Verma

    6 napja

    Maybe big animals have tiktok installed in their bodies

    • L.B Sans On Steroids

      L.B Sans On Steroids

      5 napja

      Probably not after all that make more cancerous.

  53. Jonathan Smith

    Jonathan Smith

    6 napja

    What if humans are causing it with environmental chemical change? Do human sized animals like a monkey of some kind get cancer as much as us?

  54. Mate Pic

    Mate Pic

    7 napja

    Hablo en otro idioma jaja

  55. PurOwO


    7 napja

    5:50 compliment system's skyhook.

  56. ItzSaint


    7 napja

    Your mom can’t get cancer 😳

  57. Anthony Cibene

    Anthony Cibene

    7 napja

    The unusual jumper archaeologically clean because sprout strikingly place modulo a bustling notebook. cut, four frail airmail

  58. Linssikeitto


    7 napja

    Alternate title for this video: "If Plague Inc happened in your body"

  59. Roman Patenaude

    Roman Patenaude

    7 napja

    So Addison Rae is immune to cancer?

  60. MoonshineBlack


    7 napja

    I heard most animals can’t get cancer because they don’t live long enough for it to grow.

  61. A boiled Potato.

    A boiled Potato.

    7 napja

    Could be the difference in diet as well

  62. Chv Hndrtntlr

    Chv Hndrtntlr

    7 napja


  63. Jean Rémi

    Jean Rémi

    7 napja

    But what happens if you have an hyper-hyper tumour ? Imagine like "your cancer has cancer, but your cancer's cancer also has cancer"

  64. Samantha Jones

    Samantha Jones

    8 napja

    The eatable curve energetically provide because diving booly trade abaft a oceanic vault. imminent, defiant flock

  65. Kyousuke


    8 napja

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

  66. kendall brayllie

    kendall brayllie

    8 napja

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

  67. The Coco ProjectYT

    The Coco ProjectYT

    8 napja

    3:17 is my favorite timestamp

  68. Animesh201


    8 napja

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

    • 🠔TitanNish Nishad Nadkarni Ugly Ass Face

      🠔TitanNish Nishad Nadkarni Ugly Ass Face

      5 napja

      Mine too, that dumb bitch

  69. Okabie


    8 napja

    New cancer : I have a startup Idea Lmaoooo

  70. Wulan Asihutami Sundari

    Wulan Asihutami Sundari

    8 napja

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

  71. Hrishikesh Khandeshe

    Hrishikesh Khandeshe

    8 napja

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

  72. Michael Wolf

    Michael Wolf

    8 napja

    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!"

  73. Corrado Blondi

    Corrado Blondi

    8 napja

    Good news guys, we got hypertumor!!

  74. AnotherStayathomeDad


    8 napja

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

    • 🠔TitanNish Nishad Nadkarni Ugly Ass Face

      🠔TitanNish Nishad Nadkarni Ugly Ass Face

      5 napja


    • Anjana Sen

      Anjana Sen

      7 napja

      Wha-do you think "they" manually hand out cancer cells???

  75. Joy Welch

    Joy Welch

    8 napja

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

  76. Yehudah Ben Yaakov

    Yehudah Ben Yaakov

    9 napja

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

  77. Yehudah Ben Yaakov

    Yehudah Ben Yaakov

    9 napja

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

    • QUESTION minecrafter

      QUESTION minecrafter


      hotel? trivago

  78. Muhtasim Rasheed Mimar

    Muhtasim Rasheed Mimar

    9 napja

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

    • Sodacat 30

      Sodacat 30

      5 napja

      To be it’s own individual

  79. RealismGaming 2000

    RealismGaming 2000

    9 napja

    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.

  80. Luis Miguel Andrade

    Luis Miguel Andrade

    9 napja

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

  81. Brock Tureski

    Brock Tureski

    9 napja

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

  82. Deevij Rawul

    Deevij Rawul

    9 napja

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

  83. Kaligath


    9 napja

    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.

  84. 흠냐MadMovie BGM Storage

    흠냐MadMovie BGM Storage

    9 napja

    사실 암세포도 살아있는 생명체라서 나중엔 암세포로만 이루어진 생명체가 생길수도

  85. Jeremy Cooke

    Jeremy Cooke

    9 napja

    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?

  86. cucou hinae

    cucou hinae

    9 napja

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

  87. oofer doofer

    oofer doofer

    9 napja

    Is he talking about paradox excessive use of dlc?

  88. Borderlands808


    9 napja

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



    9 napja

    How is cancer inception a paradox?

  90. Marie Starks

    Marie Starks

    9 napja


  91. Kenji


    10 napja

    Can Cancer hyper tumors get hyperhyper Tumor

  92. Mobile gamer

    Mobile gamer

    10 napja

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

  93. muhammad ksatria akbar

    muhammad ksatria akbar

    10 napja

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



    10 napja

    1🇺🇸🖕🧸🔪🌈God IS METROPOLIS...

  95. Rafael Duarte

    Rafael Duarte

    10 napja

    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??

  96. d anny

    d anny

    10 napja

    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.

  97. jprp999


    10 napja

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

  98. Alexandros Stergiakis

    Alexandros Stergiakis

    10 napja

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

  99. Peter Henry the Crawler

    Peter Henry the Crawler

    10 napja

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

  100. I'm socially Awkward

    I'm socially Awkward

    10 napja

    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.