Placek Caitlyn
Department of Anthropology, Ball State University, Muncie, IN, USA.
R Soc Open Sci. 2017 Oct 18;4(10):170243. doi: 10.1098/rsos.170243. eCollection 2017 Oct.
The onset of cravings for items not typically desired is often considered a hallmark of pregnancy. Given the ubiquity of cravings, this phenomenon remains surprisingly understudied. The current study tested four hypotheses of pregnancy food cravings: behavioural immune system, nutrient seeking, resource scarcity and social bargaining. The research took place in Tamil Nadu, South India, with pregnant women residing in rural villages (= 94). Methods included structured interviews and anthropometric measures. Findings revealed that unripe mango and unripe tamarind were the two most frequently mentioned food cravings among this population, but were not sufficiently supported by the models. Results confirmed that the social bargaining model was the best explanation for the etic category of toxic/pathogenic food items, suggesting that pregnant women crave dangerous foods when experiencing heightened social pressures. Finally, toxicity/pathogenicity was a confounding factor for the nutrient seeking and resource scarcity models, calling into question the validity of these models in adverse environments. Overall, these findings present important implications for research on pregnancy food cravings, such that in resource-scarce and pathogen-dense environments, cravings might target teratogenic items that signal a need for increased social support.
对通常不想要的物品产生渴望往往被认为是怀孕的一个标志。鉴于渴望现象普遍存在,这一现象却仍惊人地未得到充分研究。当前的研究检验了关于孕期食物渴望的四个假设:行为免疫系统、营养寻求、资源稀缺和社会谈判。该研究在印度南部的泰米尔纳德邦进行,研究对象是居住在乡村的孕妇(n = 94)。研究方法包括结构化访谈和人体测量。研究结果显示,未成熟的芒果和罗望子是该人群中最常被提及的两种食物渴望,但这些渴望在模型中未得到充分支持。结果证实,社会谈判模型是对有毒/致病食物这一类别最好的解释,这表明孕妇在社会压力增大时会渴望危险食物。最后,毒性/致病性是营养寻求模型和资源稀缺模型的一个混杂因素,这让人质疑这些模型在不利环境中的有效性。总体而言,这些研究结果对孕期食物渴望的研究具有重要意义,即在资源稀缺和病原体密集的环境中,渴望可能针对那些表明需要更多社会支持的致畸物品。