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Nausea and vomiting in pregnancy: An evolutionary perspective
Roberts, Kateřina ; Havlíček, Jan (advisor) ; Żelaźniewicz, Agnieszka (referee) ; Šebela, Antonín (referee)
The symptoms of nausea and vomiting are experienced by a majority of women during their pregnancy. Symptoms range from mild to severe, but even mild symptoms are connected with adverse effects on women's everyday life. Despite its significance, the aetiology of nausea and vomiting in pregnancy (NVP) is not fully understood. The first part of this thesis briefly summarises what is known about the predictors and mechanisms of NVP, including hormonal influences, pregnancy-related, demographic, lifestyle and psychosocial factors. Furthermore, this part focuses on NVP from an evolutionary perspective that, compared to the generally negative view, recognises that NVP has some positive effects on pregnancy outcomes. Different adaptive hypotheses of NVP are described, such as the maternal and embryo protection hypothesis and the compensatory growth hypothesis. The second part consists of five studies focusing on NVP and related topics. The first study focused on dietary and psychosocial correlates of NVP and found a relationship between the level of NVP symptoms and the consumption of milk products and alcohol and a relationship between NVP and stress, anxiety, fatigue and perceived partner support. The next three studies focused on various predictors of NVP and its relationship with disgust in pregnancy....
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