English
 
   
Cinsiyet Hoşnutsuzluğu Olan Bireylerde 2D:4D Parmak Uzunluğu Oranları

Tarık SAĞLAM, Hasan BAKAY, Mehmet Enes GÖKLER, Şenol TURAN
2020; 31(2): 84-89
[PDF]    [Makaleyi Göster]    [Özet]    [Yazara Mail]
SUMMARY
2D:4D Finger Length Ratios in Individuals with Gender Dysphoria

Objective: The neurobiological basis of Gender Dysphoria (GD)
is not yet fully known. In recent years, the role of prenatal exposure
to testosterone has been emphasized in the development of the GD.
The aim of this study was to compare the 2D:4D digit ratio, which is
considered to be a morphological indicator of exposure to testosterone
in the prenatal period, in individuals with GD.
Method: The study included 99 participants diagnosed with GD
comprising 54 assigned the female gender at birth [AFB-GD], 45
assigned the male gender at birth [AMB-GD], and 58 female and 58
male participants making up the control group. The right and the left
hands of the participants were photocopied and finger lengths were
measured using digital calipers.
Results: The 2D:4D digit ratio on the right hand of the AFB-GD group
was significantly lower (p=0.028) than that of the female controls, but
it did not differ significantly as compared to male controls. The ratio
on the left hand of the AFB-GD group did not significantly differ
from that of the female controls, but it was higher than that of the
male controls (p=0.045). The 2D:4D digit ratio on the right hand of
the AMB-GD group did not differ significantly from that of the male
controls, but they had a lower finger ratio as compared to the female
controls (p<0.001). The ratio on the left hand of the AMB-GD group
did not differ significantly from those of the male and female controls.
Conclusion: The results of this study present suggestive evidence that
the AFB-GD individuals were exposed to testosterone in the prenatal
period.
 
Key Words: Gender dysphoria, 2D:4D digit ratio, testosterone, prenatal exposure to testosterone