The study found that babies with late fetal growth restriction have higher levels of the peptide humanin in their umbilical cord blood, and those higher levels were linked to a greater chance of needing intensive care after birth. This doesn’t tell us how to use humanin for health or performance in adults.

<b>Purpose:</b> This study investigated the Humanin levels in the umbilical cord blood of fetuses with late fetal growth restriction (FGR) and -evaluated their association with perinatal outcomes. <b>Materials and Methods:</b> A total of 95 single pregnancies between 32-41 wk (45 with late FGR and 50 controls) were included. Doppler parameters, birth weight and the need for neonatal intensive care unit admission (NICU) were assessed. Correlations between Humanin levels and these parameters were analyzed. <b>Results:</b> Higher Humanin levels were found in fetuses with late FGR compared to the control group (<i>p</i>&#x2009;&lt;&#x2009;0.05). No significant correlation was observed between Humanin levels and Doppler parameters. Elevated Humanin levels were associated with an increased need for NICU (<i>p</i>&#x2009;&lt;&#x2009;0.05). <b>Conclusions:</b> The statistically higher levels of Humanin in fetuses with late FGR may suggest the potential of Humanin as an indicator of late FGR. Further research is needed to explore the clinical utility of Humanin.