Oestrogens are not related to emotional processing : a study of regional brain activity in female-to-male transsexuals under gonadal suppression

Although the prevailing opinion is that emotional processes are influenced by sex hormones, the literature is still inconclusive. The aim of the current study was to examine the effects of gonadal suppression on brain activity during affective picture processing. Twenty-one female-to-male (FtM) transsexuals and 19 control women were recruited and underwent functional magnetic resonance imaging scanning while rating emotional pictures adapted from the International Affective Picture System. The gonadal hormone production of the FtMs was suppressed for 8 weeks, the control group did not receive any treatment before scanning. Under gonadal suppression, FtMs showed less brain activation in the superior temporal lobe compared with female controls during perception of positive affective pictures. Regression analysis showed that during processing of positive affective images, brain activity within the right superior temporal lobe was not correlated with levels of estradiol, luteinizing hormone, and follicle-stimulating hormone. In the absence of associations with hormonal levels, the difference in activation in the superior temporal lobe during positive emotional stimuli between FtMs and control women may be attributed to a priori differences between the 2 groups. Future studies should clarify if these differences are a result of atypical sexual differentiation of the brain in FtMs

Recalled gender-related play behavior and peer-group preferences in childhood and adolescence among adults applying for gender-affirming treatment

Norms are considered to influence expectations toward gender-related behavior. Deviations from these norms are often perceived negatively by the social environment. The objective of this study was to investigate adults diagnosed with a Gender Identity Disorder (GID), their recalled play behavior, and peer preferences in childhood and adolescence. Differences between individuals who applied for transition from female to male (FtMs) and those who applied for transition from male to female (MtFs) and between age-of-onset subgroups were explored. Data collection took place as part of the European Network for the Investigation of Gender Incongruence. The sample consisted of N = 634 participants (mean age = 30.6) diagnosed with GID according to DSM-IV-TR who were recruited between 2007 and 2012. Participants answered two questions regarding recalled play behavior and three questions on peer preferences. Nonconforming gender expression was more frequently recalled in FtMs than MtFs. Within gender groups, individuals who were categorized as early-onset recalled nonconforming gender expression more frequently than individuals who were categorized as late-onset. The results of the study are in line with previous findings indicating different phenomenological pathways in individuals applying for gender-affirming treatment that warrant attention. Factors that are considered to impact on gender-related differences in nonconforming gender expression are discussed

To treat or not to treat: puberty suppression in childhood-onset gender dysphoria

Puberty suppression using gonadotropin-releasing-hormone analogues (GnRHa) has become increasingly accepted as an intervention during the early stages of puberty (Tanner stage 2-3) in individuals with clear signs of childhood-onset gender dysphoria. However, lowering the age threshold for using medical intervention for children with gender dysphoria is still a matter of contention, and is more controversial than treating the condition in adolescents and adults, as children with gender dysphoria are more likely to express an unstable pattern of gender variance. Furthermore, concerns have been expressed regarding the risks of puberty suppression, which are poorly understood, and the child's ability to make decisions and provide informed consent. However, even if the limited data available mean that it is not possible to make a conclusive treatment recommendation, some safety criteria for puberty suppression can be identified and applied