I am interested in the interaction and the unity of masculinity and femininity. Nowadays, this issue raises many questions, misunderstandings and fears in society. 
Where is the line between normal awareness of one’s gender identity and gender dysphoria? (Gender dysphoria is the suffering a person experiences because of a mismatch between their gender identity and the gender assigned at birth. People with gender dysphoria usually identify as transgender. Wikipedia).
In 2013, according to scientists, approximately 0.005% to 0.014% of the world’s residents with an assigned male sex at birth and 0.002% to 0.003% with an assigned female sex were diagnosed with gender dysphoria. 
The number of patients with gender dysphoria seeking help, support, and treatment has increased significantly recently according to studies conducted in Europe and the United States (Aitken et al. 2015, de Vries et al. 2015, Wiepjes C., 2018) [70, 107, 203]. 
Sociological research conducted in Denmark by Kuyper L., & Wijsen C. in 2014 on a large population sample showed that 4.6% of people registered at birth as male and 3.2% of those registered as female stated their “ambivalent gender identity».
A report from the Swedish Board of Health and Welfare confirmed a 1,500% increase in the diagnosis of gender dysphoria between 2008 and 2018 among children aged from 13 to 17. 
These figures make one wonder: there are a certain number of people in our society who suffer from an uncertain gender identity. In most cultures, the biological difference between men and women is extensively encrusted with a system of prejudices and stereotyped behavior. 
This consequently has an adverse effect on the way individual men and women perceive themselves. It is important that they have the same rights as the rest of the society: that no one kills people because of their sexuality, deny them health services, fire them from their jobs, or prevent them from living freely and normally, feeling like complete human beings.