What Causes Morning Sickness?

What Causes Morning Sickness?

If you’ve ever been pregnant, or been around a pregnant lady, 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.

Hosted by: Hank Green
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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

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