How worried should you be when your urine isn't yellow, but instead it's green, red, or even black? Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Kevin, Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Tim Curwick, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Bryce Daifuku, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow ---------- Sources: medlineplus.gov/ency/article/003139.htm health.ucsd.edu/news/features/Pages/2014-04-21-colors-that-suggest-urine-trouble.aspx health.clevelandclinic.org/2013/10/what-the-color-of-your-urine-says-about-you-infographic/ www.ncbi.nlm.nih.gov/pmc/articles/PMC4045424/ gizmodo.com/why-do-vitamins-make-urine-bright-yellow-1240027073 udel.edu/~mcdonald/mythbeeturia.html dmd.aspetjournals.org/content/29/4/539 www.kidney-international.com/article/S0085-2538(15)53423-6/fulltext www.bmj.com/content/347/bmj.f6289 www.ncbi.nlm.nih.gov/pubmed/7598270 www.nejm.org/doi/full/10.1056/NEJMicm065416#t=article www.ncbi.nlm.nih.gov/pmc/articles/PMC3087269/ rarediseases.org/rare-diseases/blue-diaper-syndrome/ www.ncbi.nlm.nih.gov/pmc/articles/PMC3147034/ www.bjmp.org/content/medicine-pictures-purple-urine-bag-syndrome www.ncbi.nlm.nih.gov/pubmed?term=16032624 www.ncbi.nlm.nih.gov/pubmed?term=15153241 www.ncbi.nlm.nih.gov/pmc/articles/PMC266835/ www.bjmp.org/content/medicine-pictures-purple-urine-bag-syndrome www.ncbi.nlm.nih.gov/pmc/articles/PMC3147034/ www.chop.edu/conditions-diseases/chyluria www.ncbi.nlm.nih.gov/pmc/articles/PMC3168002/ ghr.nlm.nih.gov/condition/alkaptonuria rarediseases.org/rare-diseases/alkaptonuria/