When most people hear about marijuana, they think about the high caused by THC. But what if marijuana didnҴ cause a high? Well it can happen, with a little cannabinoid called CBD. Hosted by: Hank Green ח׭ Support SciShow by becoming a patron on Patreon:https://www.patreon.com/scishow ח׭ Dooblydoo thanks go to the following Patreon supporters׷e couldnҴ make SciShow without them! Shout out to Jeremy Peng, Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Kyle Anderson, Tim Curwick, Scott Satovsky Jr, Will and Sonja Marple, Philippe von Bergen, Bella Nash, Bryce Daifuku, Chris Peters, Saul, Patrick D. Ashmore, Charles George, Bader AlGhamdi ח׭ 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 ח׭ Looking for SciShow elsewhere on the internet? Facebook:http://www.facebook.com/scishow Twitter:http://www.twitter.com/scishow Tumblr:http://scishow.tumblr.com Instagram:http://instagram.com/thescishow ח׭ Sources: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.848.9677&rep=rep1&type=pdf http://pubs.acs.org/doi/pdf/10.1021/ja01062a046 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3481531/ http://www.sciencedirect.com/science/article/pii/S0968089615000838 http://www.fda.gov/NewsEvents/PublicHealthFocus/ucm421163.htm http://onlinelibrary.wiley.com/doi/10.1002/cbdv.200790147/abstract http://onlinelibrary.wiley.com/doi/10.1038/sj.bjp.0707442/abstract http://www.pnas.org/content/105/7/2699.full https://www.ncbi.nlm.nih.gov/books/NBK5238/ https://www.ncbi.nlm.nih.gov/books/NBK5237/ https://www.ncbi.nlm.nih.gov/gene/7442 http://www.genecards.org/cgi-bin/carddisp.pl?gene=TRPV2 http://www.thelancet.com/journals/laneur/article/PIIS1474-4422(15)00379-8/abstract http://onlinelibrary.wiley.com/doi/10.1002/j.1552-4604.2002.tb05998.x/abstract https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4707667/ https://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0089688/#S5 http://jamanetwork.com/journals/jama/fullarticle/2338251https://www.ncbi.nlm.nih.gov/pubmed/21238581 https://www.ncbi.nlm.nih.gov/pubmed/21827451