Impact of earthquakes on sex ratio at birth: Eastern Marmara earthquakes

Döğer, Emek; Çakıroğlu, Yiğit; Köpük, Şule Yıldırım; Ceylan, Yasin; Şimşek, Hayal Uzelli; Çalışkan, Eray

doi:10.5152/jtgga.2013.69320

Cited by 8 publications

(11 citation statements)

References 61 publications

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“…Summary of the main results. (A) Catalano et al, 2013; D'Alfonso et al, 2012; Doğer et al, 2013; Fukuda et al, 1998; Fukuda et al, 2018; Hamamatsu et al, 2014; Nandi et al, 2018; Saadat, 2008; Suzuki et al, 2016; Torche & Kleinhaus, 2012; Tourikis & Beratis, 2013. (B) Catalano et al, 2020; Grech & Borg, 2016.…”

Section: Resultsmentioning

confidence: 99%

“…There is a significant decline in SRB according to studies conducted in Bam (Saadat, 2008), Wenchuan (Tan et al, 2009), L'Aquila (D'Alfonso et al, 2012), Tarapaca (Torche & Kleinhaus, 2012), Gölcük (Doğer et al, 2013), East Japan (Suzuki et al, 2016), and Gujarat (Nandi et al, 2018). Two studies (D'Alfonso et al, 2012; Saadat, 2008) found a reduction in male births at 9 and 11 months after an earthquake, respectively.…”

Section: Resultsmentioning

confidence: 99%

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The impact of catastrophic events on the sex ratio at birth: A systematic review

Fontanesi,

Verrocchio,

D'Ettorre

et al. 2023

American J Hum Biol

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ObjectiveThe impact of maternal stress on birth outcomes is well established in the scientific research. The sex ratio at birth (SRB), namely the ratio of male to female live births, shows significant alteration when mothers experience acute stress conditions, as proposed by the Trivers‐Willard Hypothesis. We aimed to synthetize the literature on the relationship between two exogenous and catastrophic stressful events (natural disasters and epidemics) and SRB.MethodsA systematic search was run in Scopus, PubMed, Web of Science, and Cochrane Library, until March 9, 2023. The search produced 1336 articles and 25 articles met the inclusion criteria. We found seven case–control studies and 18 observational studies. Most of studies investigated the impact of earthquakes and other natural disasters. Only seven studies examined the effect of epidemics or pandemics.ResultsThe results of the studies seem inconsistent, as 16 studies found a decline in SRB, three found a rise, four did not record any change and two studies gave contradictory results. The period and population analyzed, the source of information, the method of variance analysis in the SRB, and the failure to assess confounding variables may have influenced the incongruence of the results.ConclusionOur findings contribute to improve the knowledge about the relationship between socio‐ecological factors and SRB. Future studies should investigate the mechanisms by which this relationship impacts public health, in particular the health of pregnant women and their newborn, through an accurate and consistent methodology that also includes confounding factors.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

The impact of catastrophic events on the sex ratio at birth: A systematic review

Fontanesi,

Verrocchio,

D'Ettorre

et al. 2023

American J Hum Biol

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“… 9 Similarly, male genetic frailty may mean that male fetuses are less resilient, or conception of male fetuses is reduced during periods of maternal or population-based stress. 70 Changes to the secondary sex ratio have previously been demonstrated following population-wide stress events including earthquakes 7 , 8 , 71 – 73 and terrorist attacks. 70 …”

Section: Discussionmentioning

confidence: 97%

Birth Outcomes, Health, and Health Care Needs of Childbearing Women following Wildfire Disasters: An Integrative, State-of-the-Science Review

Evans

Bansal

Schoenaker

et al. 2022

Environ Health Perspect

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Background: The frequency and severity of extreme weather events such as wildfires are expected to increase due to climate change. Childbearing women, that is, women who are pregnant, soon to be pregnant, or have recently given birth, may be particularly vulnerable to the effect of wildfire exposure. Objectives: This review sought to systematically assess what is known about birth outcomes, health, and health care needs of childbearing women during and after exposure to wildfires. Methods: An integrative review methodology was utilized to enable article selection, data extraction, and synthesis across qualitative and quantitative studies. Comprehensive searches of SCOPUS (including MEDLINE and Embase), CINAHL, PubMed, and Google Scholar identified studies for inclusion with no date restriction. Included studies were independently appraised by two reviewers using the Crowe Critical Appraisal Tool. The findings are summarized and illustrated in tables. Results: Database searches identified 480 records. Following title, abstract, and full text screening, sixteen studies published between 2012 and 2022 were identified for this review. Eleven studies considered an association between in utero exposure to wildfire and impacts on birth weight and length of gestation. One study reported increased rates of maternal gestational diabetes mellitus and gestational hypertension following exposure; whereas one study reported differences in the secondary sex ratio. Two studies reported higher incidence of birth defects following in utero exposure to wildfire smoke. Three studies reported increased mental health morbidity, and one study associated a reduction in breastfeeding among women who evacuated from a wildfire disaster. Discussion: Evidence indicates that wildfire exposure may be associated with changes to birth outcomes and increased morbidity for childbearing women and their babies. These effects may be profound and have long-term and wide-ranging public health implications. This research can inform the development of effective clinical and public health strategies to address the needs of childbearing women exposed to wildfire disaster. https://doi.org/10.1289/EHP10544

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“…[ 5 ] The study done by Montenegro in Chile observed that there was an increased incidence of facial clefts in infants who were at the appropriate period during a major Earthquake in Chile, indicating the role of increased stress levels in the etiology of cleft lip and/or palate. [ 6 ] Surprisingly, Fracer F. C did not observe any association of emotional stress during pregnancy with cleft lip or palate. [ 7 ]…”

Section: Discussionmentioning

confidence: 99%

“…Some of them have supported the role of maternal stress as a contributory factor, while some have denied it. [ 2 3 4 5 6 7 ] We conducted this study with the objective of determining whether maternal stress could be a causal factor for the occurrence of nonsyndromic cleft lip and palate.…”

Section: Introductionmentioning

confidence: 99%

Could maternal stress be a causal factor for nonsyndromic cleft lip and/or palate

Mahapure

Powar

2022

National Journal of Maxillofacial Surgery

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Background: The etiology of the nonsyndromic cleft lip and palate is multifactorial and not clearly defined. Objective: To determine whether maternal stress could be a causal factor for the occurrence of nonsyndromic cleft lip and palate. Materials and Methods: We conducted a retrospective observational study in which data from 50 mothers of children born with nonsyndromic cleft lip and palate and 50 mothers of noncleft children were analyzed. The outcomes defined were to study the association between the increased stress scores and the occurrence of nonsyndromic cleft lip and/or palate. Statistical analysis was performed using the Chi-square test. Results: The association between the high maternal stress scores and the occurrence of nonsyndromic cleft lip and/or palate was not found to be significant (P = 0.3220). A significant association was noted between increased maternal age and increased stress levels in the cleft group (P = 0.0001). Conclusion: No significant association was found between the increased stress scores and the occurrence of nonsyndromic cleft lip and/or palate. However, mothers of cleft children whose age was 35 years and above at the time of conception were noted to have higher stress levels.

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Impact of earthquakes on sex ratio at birth: Eastern Marmara earthquakes

Cited by 8 publications

References 61 publications

The impact of catastrophic events on the sex ratio at birth: A systematic review

The impact of catastrophic events on the sex ratio at birth: A systematic review

Birth Outcomes, Health, and Health Care Needs of Childbearing Women following Wildfire Disasters: An Integrative, State-of-the-Science Review

Could maternal stress be a causal factor for nonsyndromic cleft lip and/or palate

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