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Published on Apr 30, 2015
What are allergies? How are they caused, and what can people do to prevent them? SciShow explains!
Hosted by: Michael Aranda
Annotations: Your Immune System: Natural Born Killer: https://youtu.be/CeVtPDjJBPU ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Lentz, John Szymakowski, Ruben Galvao, and Peso255. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow