Association between the age at first menstruation (menarche) and metabolic, reproductive and sociodemographic factors: an analysis of the population of Geneva, Switzerland
The age at which girls have their first period (menarche) has been gradually falling over several generations. This trend raises important questions about its long-term implications for women’s metabolic, reproductive and social health. This study, conducted among more than 6,400 women in the canton of Geneva, shows that an earlier or later age at menarche is associated with different health profiles. These findings suggest that the age at which a girl has her first period could be a useful indicator for better identifying certain health risks throughout life.