![Trends in age at menarche in low- and middle-income countries] Évolution de l'âge aux premières règles dans les pays à revenu faible et intermédiaire - N-IUSSP](https://rdl.ink/render/https%3A%2F%2Fwww.niussp.org%2Fwp-content%2Fuploads%2F2021%2F02%2Fmenarche_age_puberty_2021.jpg?width=92&height=69&ar=&mode=crop&format=avif&dpr=2)
Trends in age at menarche in low- and middle-income countries] Évolution de l'âge aux premières règles dans les pays à revenu faible et intermédiaire - N-IUSSP
Understanding the timing and determinants of age at menarche is key to determining potential linkages between onset of puberty and health outcomes from a lifecourse perspective. Tiziana Leone and Laura Brown show that the age at menarche is declining across low- and middle- income countries and discuss implications.