Research
Print page Print page
Switch language
The Capital Region of Denmark - a part of Copenhagen University Hospital
Published

Effects of earthquakes and other natural catastrophic events on the sex ratio of newborn infants

Research output: Contribution to journalJournal articleResearchpeer-review

  1. Are fetal mortality and a trend towards reduced birth weight of infants associated with climate changes in Japan?

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. The sex ratio at birth after recent major earthquakes in Japan

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. No seasonality of birth in BMI at 7years of age

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Bacillus Calmette-Guérin vaccination at birth: Effects on infant growth. A randomized clinical trial

    Research output: Contribution to journalJournal articleResearchpeer-review

  1. Review of injection techniques for spermatogonial stem cell transplantation

    Research output: Contribution to journalReviewResearchpeer-review

  2. Ovarian cortical follicle density in infertile women with low anti-Müllerian hormone

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Gene Expression in Granulosa Cells From Small Antral Follicles From Women With or Without Polycystic Ovaries

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Quantitative Differences in TGF-β Family Members Measured in Small Antral Follicle Fluids From Women With or Without PCO

    Research output: Contribution to journalJournal articleResearchpeer-review

View graph of relations

Stress due to earthquakes and other natural catastrophic events may result in a decline in the male to female ratio of newborn infants. One reason may be an increased death of male fetuses 3-5 months earlier. Another reason may relate to reduced conception of males and/or early male embryo demise 8-10 months earlier. Almost all of the earthquakes and natural catastrophic events have caused declines in sex ratios at birth except the Hurricane Katrina which showed a rise in the birth sex ratio. We describe hypothetical immunological cause for the decline in the sex ratio at birth following periods of augmented stress levels.

Original languageEnglish
JournalEarly Human Development
Pages (from-to)104859
ISSN0378-3782
DOIs
Publication statusPublished - 4 Sep 2019

ID: 59044630