Social scientists have long declared their autonomy from the natural sciences, and in doing
so have tended to neglect important biological constraints on human nature. Many …

Proportion of males at birth (commonly referred to as the sex ratio) has been investigated for
countries of former Yugoslavia that were affected by the 1991–1995 wars. Number of live …

Introduction: In humans, live male births slightly exceed females and this ratio is
conventionally expressed as male live births divided by total live births (M/F). A wide variety …

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 …

The factors that influence the male to female ratio at birth are legion. Males are usually born
in excess and stress decreases the ratio while wellbeing and good health tends to increase …

At the end of war, and other times of both chronic and acute stress, remarkable changes
occur in the human secondary (birth) sex ratio. At the end of a long war, significantly more …

Introduction Globally, male live births exceed female live births by approximately 3%. The
secondary sex ratio is conventionally expressed as male births divided by total live births …

Background In light of the recent Great Recession, increasing attention has focused on the
health consequences of economic downturns. The perinatal literature does not converge on …

The goal of this study was to examine whether and to what extent sex ratio values at birth
may have reflected social and economic inequalities in the Province of Poznań (German …

Study objective: The male sex ratio at birth (or the proportion of male births in a population)
has been suggested as a sentinel environmental health indicator. Usually around 51%, the …