How Did We Figure Out What a Heart Attack Was

Head to to get a 100 60day credit on a new Linode account. Linode offers simple, affordable, and accessible Linux cloud solutions and services. Heart attacks are the number 1 cause of death worldwide in the 21st century, but we weren t sure what caused them until 1980. Hosted by: Hank Green SciShow is on TikTok Check us out at Support SciShow by becoming a patron on Patreon: Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Sam Lutfi, Bryan Cloer, Kevin Bealer, Christoph Schwanke, Tomás Lagos González, Jason A Saslow, Tom Mosner, Jacob, Ash, Eric Jensen, Jeffrey Mckishen, Alex Hackman, Christopher R Boucher, Piya Shedden, Jeremy Mysliwiec, Chris Peters, Dr. Melvin Sanicas, charles george, Adam Brainard, Harrison Mills, Silas Emrys, Alisa Sherbow Looking for SciShow elsewhere on the internet SciShow Tangents Podcast: Facebook: Twitter: Instagram: , SciShow Sources: Images: