Genes can indirectly influence the age at which girls have their first period by accelerating weight gain in childhood, a known risk factor for early puberty. Other genes can directly affect age of puberty, some with profound effects.
Geiger Mueller News Service
Genes can indirectly influence the age at which girls have their first period by accelerating weight gain in childhood, a known risk factor for early puberty. Other genes can directly affect age of puberty, some with profound effects.