“…Leptin therefore may serve as an upstream biomarker for the onset of puberty. Together with evidence that kisspeptin acts as a key gating factor in puberty (Clarke, Dhillo, & Jayasena, ; Cortes, Carrera, Rioseco, Pablo del Rio, & Vigil, ) and in regulation of HPG activity (Chan et al., ; de Roux et al., ), these findings suggest that both kisspeptin and leptin could prove useful in tracking pubertal onset, including delayed or precocious puberty, although the work in humans is preliminary and based on clinical populations (Lippincott et al., ). Insofar as leptin and the expression of kisspeptins are influenced by stress, nutrition, obesity and other metabolic disruptions, they may be useful probes to examine multisystemic effects of health and well‐being on pubertal development.…”