User talk:Krzecr/sandbox

Sophia - Secondary sources:

http://www.ncbi.nlm.nih.gov/pubmed/10858967 - Flaxman & Sherman, 2000

Biological Mechanisms ·Nausea + vomiting declines after 18 weeks (fetus becomes less vulnerable) ·Meat + strong-tasting vegetables likely to contain parasites, pathogens, and plant toxins -- triggers morning sickness sx's across cultures Evolutionary work that has already been done ·expelling foods that historically contain harmful toxins and microorganisms (meat, strong-tasting veggies) that can sicken mother + fetus when its most vulnerable organs are developing ·women with most severe morning sickness have lower rates of spontaneous abortion ·only humans experience this probably b/c of our "extraordinary broad diet" compared to other primates/mammals ·referred to as an "evolutionary wellness insurance"

http://scienceblogs.com/gregladen/2008/06/28/morning-sickness-is-an-adaptat/

http://www.thehindu.com/seta/2002/01/17/stories/2002011700110400.htm

Julie

Sherman - Nausea and vomiting of pregnancy in an evolutionary perspective

"Morning sickness" does not present itself as a typical disease state. It could serve as a way to protect the mother and fetus from food-borne toxins. It has been seen that women who vomited during pregnancy miscarried less often than those who did not.

"maternal-and-embryo protection hypothesis" states that nausea and vomiting protects the fetus from exposure to secondary compounds found in plants. In large quantities, these can be damaging to a newly developing fetus and an immune compromised mother.

Miscarriages and birth defects can result if women become seriously ill, especially in the first trimester. Morning sickness is usually strongest in the first trimester. Food aversions usually disappear after birth. — Preceding unsigned comment added by Erlemj (talk • contribs) 17:14, 1 March 2016 (UTC)