The Real Reason Why You Have Allergies

This video was sponsored by GiveWell.  First-time donors will have their donation matched up to $100 at https://www.givewell.org/Kurzgesagt Your support makes everything possible ❤️ It’s not too late to order your limited edition 12,025 Human Era Calendar here: https://shop.kgs.link/12025Cal Sources & further reading: https://sites.google.com/view/sources-allergies-and-worms/ Allergies are more than just overreactions – they might be an evolutionary relic from a time when worms invaded our bodies daily. OUR CHANNELS ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ German: https://kgs.link/youtubeDE Spanish: https://kgs.link/youtubeES French: https://kgs.link/youtubeFR Portuguese: https://kgs.link/youtubePT Arabic: https://kgs.link/youtubeAR Hindi: https://kgs.link/youtubeHI Japanese: https://kgs.link/youtubeJA Korean: https://kgs.link/youtubeKO HOW CAN YOU SUPPORT US? ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ This is how we make our living and it would be a pleasure if you support us! Get Products designed with ❤️ https://shop.kgs.link Join the Patreon Bird Army 🐧 https://kgs.link/patreon DISCUSSIONS & SOCIAL MEDIA ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ TikTok: https://kgs.link/tiktok Reddit: https://kgs.link/reddit Instagram: https://kgs.link/instagram Twitter: https://kgs.link/twitter Facebook: https://kgs.link/facebook Discord: https://kgs.link/discord Newsletter: https://kgs.link/newsletter OUR VOICE ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ The kurzgesagt voice is from Steve Taylor: https://kgs.link/youtube-voice OUR MUSIC ♬♪ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ 700+ minutes of kurzgesagt soundtracks by Epic Mountain: Spotify: https://kgs.link/music-spotify Soundcloud: https://kgs.link/music-soundcloud Bandcamp: https://kgs.link/music-bandcamp Youtube: https://kgs.link/music-youtube Facebook: https://kgs.link/music-facebook The soundtrack of this video: Spotify: https://bit.ly/3ZwfBLu SoundCloud: https://bit.ly/3ZP5rHj Bandcamp: https://bit.ly/4gvIRsD If you want to help us caption this video, please send subtitles to [email protected] You can find info on what subtitle files work on YouTube here: https://support.google.com/youtube/answer/2734698?hl=en-GB&ref_topic=7296214 Thank you! 🐦🐧🐤 PATREON BIRD ARMY 🐤🐧🐦 ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Many thanks to our wonderful Patreons (from http://kgs.link/patreon) who support us every month and made this video possible: Julie C, Matt Towner, Ryan BrodeFrank, Joseph Lee, Billy Cheesesteaks, Damian Rooney, Erwan Le Cren, David Hughes, Ethan Suh, Cameron Ensel, Gustavo Rosanova, Alexandra Andreas, KooParan, Wilson, ManlioRN, Names Haillay,David Dunlap, Marissa Alyse Wilkinson, Craig, Marvela, Jim Wright, Oskar Junevicius, Sai, Magdalena Wanzenböck, Marco Manna, Joe Ward, Anthony Devine, Cameron Mitchell, Matthew Carey, bybr3nnan, Bauer, Erin Lee, Carol Wise, The Towne Witch, Sandy, Stark, Matt Seif, Nomnom, Jenny Griffiths, Toyas Dhake, ChromaDim, Michael Marino, Maxim Dupéré, Tiffany Tang, Marcel Schulz, Super Space Man 34, Huntman473, Mischa Hall, Orange, Jindřich Vlášek CHAPTERS ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ 0:00 Give Well Sponsorship Part 01 0:30 Video Start 1:25 This is Very Upsetting – And Interesting 5:34 What Is an Allergy? 10:15 Give Well Sponsorship Part 02 11:10 A Special Piece of kurzgesagt 14:29 Happy Holidays