Mail-in DNA tests have been in the news recently. Test results can be over the map, with even identical twins getting some widely variable results. What's the deal with that? The Vox article: https://www.vox.com/science-and-health/2019/1/28/18194560/ancestry-dna-23-me-myheritage-science-explainer Subscribe to Healthcare Triage! https://bit.ly/2GlEYWG Aaron has a book out now! It’s called The Bad Food Bible: How and Why to Eat Sinfully. You can order a copy now!!! Amazon - http://amzn.to/2hGvhKw Barnes & Noble - https://www.barnesandnoble.com/w/the-bad-food-bible-aaron-carroll/1125338472?ean=9780544952560 Indiebound - http://www.indiebound.org/book/9780544952560?aff=dhoom09 iBooks - http://itunes.apple.com/us/book?isbn=9780544952577&uo=8&at=1010lwmG Google - http://books.google.com/books?vid=ISBN9780544952577 Kobo - http://www.kobobooks.com/search/search.html?q=9780544952577 Any local bookstore you might frequent. You can ask for the book by name or ISBN 978-0544952560 John Green -- Executive Producer Stan Muller -- Director, Producer Aaron Carroll -- Writer Mark Olsen – Graphics Meredith Danko – Social Media http://www.twitter.com/aaronecarroll http://www.twitter.com/crashcoursestan http://www.twitter.com/johngreen http://www.twitter.com/olsenvideo And the housekeeping: 1) You can support Healthcare Triage on Patreon: http://vid.io/xqXr Every little bit helps make the show better! 2) Check out our Facebook page: http://goo.gl/LnOq5z 3) We still have merchandise available at http://www.hctmerch.com