9 papers analyzed
The question of whether babies are female first touches on the biological and genetic mechanisms that determine fetal sex. This topic has been explored through various studies, examining factors such as fetal heart rate, maternal age, and the sex ratio at birth.
Fetal Heart Rate and Gender:
Sex Ratio in Newborns:
Sex of First Child and Health Outcomes:
The research indicates that babies are not inherently female first. The sex ratio at birth remains relatively stable and is not significantly influenced by factors such as maternal age or birth order. Additionally, while the sex of the first child can impact certain maternal health outcomes, it does not support the notion that all babies start as female.
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