Sexually selected infanticide has been the subject of intense empirical and theoretical study
for decades; a related phenomenon, male‐mediated prenatal loss, has received much less …

Objective To assess associations between unconventional natural gas development (UGD)
and perinatal outcomes. Methods We conducted a retrospective birth cohort study among …

This paper will consist of two parts. In the first, further support is given to the proposal that
offspring sex ratios (proportions male) may usefully be regarded as indicators of public …

Background and objectives The sex ratio of human birth cohorts predicts the health and
longevity of their members. Most literature invokes natural selection in support of the …

Objectives Theories of reproductive suppression predict that natural selection would
conserve mechanisms that abort the gestation of offspring otherwise unlikely to thrive in …

The phenomenon whereby pregnancy may be inhibited or terminated when a female is
exposed to non‐sire males after mating is often, and rather generally, referred to as the …

The medical literature has shown that populations under high stress have a lower sex ratio
at birth (ie number of males for every 100 females). In this paper, I examine the relationship …

In recent years, scientists have begun to pay serious attention to the hypothesis that human
parental coital rates around the time of conception causally influences the sexes of …

Prolactin is a protein hormone that plays a regulating role in many physiological processes
across mammalian species, but the two primary functions it exerts are the development of …

Periviable infants (ie, those born in the 20th through 26th weeks of gestation) suffer much
morbidity and approximately half die in the first year of life. Attempts to explain and predict …