What Causes Morning Sickness?

If you’ve ever been pregnant, you know that the agony that is morning sickness -- and it’s not just something that happens in the morning! SciShow explains the many theories about what causes it. #science #pregnancy #health #medical #scishow Hosted by: Hank Green ---------- 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/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Sources: http://www.nlm.nih.gov/medlineplus/ency/article/003119.htm http://www.medicalnewstoday.com/articles/179633.php https://www.ncbi.nlm.nih.gov/pubmed/12681864 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1635459/ http://mentalfloss.com/article/31674/what-causes-morning-sickness http://americanpregnancy.org/pregnancyhealth/morningsickness.html http://americanpregnancy.org/duringpregnancy/hcglevels.html http://www.mayoclinic.org/diseases-conditions/morning-sickness/basics/definition/con-20033445 http://scienceblogs.com/gregladen/2008/06/28/morning-sickness-is-an-adaptat/ http://www.ncbi.nlm.nih.gov/pubmed/3614796 http://www.ranzcog.edu.au/points-for-past-meetings2/doc_view/1127-31-it-s-not-just-morning-sickness.html