Person who changes their sex, which means to shift from one gendered body to the other by hormonal treatment and surgery and adopt all attitudes which are connected to this new body, becoming a male-to-female transexual or a female-to-male transexual. People sometimes discover that they were born in the wrong body and that they can not meet society’s expectations which are connected to this body. Many countries have strong regulation for sex changes, it is still seen as a disease sometimes, for example in Germany, to undertake a physical sex change, a psychological opinion is needed and the person has to accept permanent infertility.