0_Wizard
I wonder what it is like to have a gender change. Some changes in some animals occur naturally. 
Sex change may occur naturally, as in the case of the sequential hermaphroditism observed in some species.
chosen_Sex_change_0
Sex change
chosen_topic_0_Sex_change
Transgender rights in the United States
Transgender rights in the United States vary considerably by jurisdiction. Birth certificates are typically issued by the Vital Records Office of the state (or equivalent territory, or capital district) where the birth occurred, and thus the listing of biological sex as male, female or otherwise on the birth certificate (and whether or not this can be changed later) is regulated by state (or equivalent) law. However, federal law regulates sex as listed on a Consular Report of Birth Abroad, and other federal documents that list sex or name, such as the U.S. passport. Laws concerning name changes in U.S. jurisdictions are also a complex mix of federal and state rules.
Chemical element
A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or "Z"). 118 elements are identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements. There are 80 elements that have at least one stable isotope and 38 that have exclusively radionuclides, which decay over time into other elements. Iron is the most abundant element (by mass) making up Earth, while oxygen is the most common element in the Earth's crust. Chemical elements constitute all of the ordinary matter of the universe.
Aggression
Aggression is overt, often harmful, social interaction with the intention of inflicting damage or other unpleasantness upon another individual. It may occur either in retaliation or without provocation. In humans, frustration due to blocked goals can cause aggression. Human aggression can be classified into direct and indirect aggression, whilst the first is characterized by physical or verbal behavior intended to cause harm to someone, the second one is characterized by a behavior intended to harm social relations of an individual or a group. In definitions commonly used in the social sciences and behavioral sciences, aggression is a response by an individual that delivers something unpleasant to another person.
Grammatical gender
In linguistics, grammatical gender is a specific form of noun-class system in which the division of noun classes forms an agreement system with another aspect of the language, such as adjectives, articles, pronouns, or verbs. This system is used in approximately one quarter of the world's languages. In these languages, most or all nouns inherently carry one value of the grammatical category called "gender"; the values present in a given language (of which there are usually two or three) are called the "genders" of that language. According to one definition: "Genders are classes of nouns reflected in the behaviour of associated words."
Wetland
A wetland is a land area that is saturated with water, either permanently or seasonally, such that it takes on the characteristics of a distinct ecosystem. The primary factor that distinguishes wetlands from other land forms or water bodies is the characteristic vegetation of aquatic plants, adapted to the unique hydric soil. Wetlands play a number of roles in the environment, principally water purification, flood control, carbon sink and shoreline stability. Wetlands are also considered the most biologically diverse of all ecosystems, serving as home to a wide range of plant and animal life. Wetlands occur naturally on every continent except Antarctica, the largest includes the Amazon River basin, the West Siberian Plain, and the Pantanal in South America.
Transgender rights in Canada
Transgender rights in Canada, including procedures for changing legal gender assignment and protections from discrimination, vary among provinces and territories. Initiatives towards gender inclusivity was a promise made by Prime Minister Justin Trudeau. As of August 31, 2017, Canadians can indicate that they do not identify as male or female on their passports. This is an ongoing effort by the federal government to eventually allow individuals to indicate their sex as 'x' on their passport and other government-issued identification. In order to alter the sex recorded on an individual's birth certificate, they must go through the province or territory where they were born.
Gender
Gender is the range of characteristics pertaining to, and differentiating between, masculinity and femininity. Depending on the context, these characteristics may include biological sex (i.e., the state of being male, female, or an intersex variation), sex-based social structures (i.e., gender roles), or gender identity. People who do not identify as a man or a woman or with masculine or feminine gender pronouns are often grouped under the umbrella terms "non-binary" or "genderqueer". Some cultures have specific gender roles that are distinct from "man" and "woman," such as the hijras of South Asia.
1_Apprentice
Wow, You mean gender change in animals can occur naturally, what animals are those?
0_Wizard
If I recall correctly some worms do that. But most what comes to most people's minds is surgery for humans. 
Most commonly, however, the term is used for sex reassignment therapy, including sex reassignment surgery, carried out on humans.
chosen_Sex_change_0
Sex change
chosen_topic_0_Sex_change
Recall (memory)
Recall in memory refers to the mental process of retrieval of information from the past. Along with encoding and storage, it is one of the three core processes of memory. There are three main types of recall: free recall, cued recall and serial recall. Psychologists test these forms of recall as a way to study the memory processes of humans and animals. Two main theories of the process of recall are the two-stage theory and the theory of encoding specificity. The "two-stage theory" states that the process of recall begins with a search and retrieval process, and then a decision or recognition process where the correct information is chosen from what has been retrieved.
Short-term memory
Short-term memory (or "primary" or "active memory") is the capacity for holding, but not manipulating, a small amount of information in mind in an active, readily available state for a short period of time. For example, short-term memory can be used to remember a phone number that has just been recited. The duration of short-term memory (when rehearsal or active maintenance is prevented) is believed to be in the order of seconds. The most commonly cited capacity is "The Magical Number Seven, Plus or Minus Two" (which is frequently referred to as "Miller's Law"), despite the fact that Miller himself stated that the figure was intended as "little more than a joke" (Miller, 1989, page 401) and that Cowan (2001) provided evidence that a more realistic figure is 4±1 units.
Mammomonogamus
Mammomonogamus is a genus of parasitic nematodes of the family Syngamidae that parasitise the respiratory tracts of cattle, sheep, goats, deer, cats, orangutans, and elephants. The nematodes can also infect humans and cause the disease called mammomonogamiasis. Several known species fall under the "Mammomonogamus" genus, but the most common species found to infest humans is "M. laryngeus". Infection in humans is very rare, with only about 100 reported cases worldwide, and is assumed to be largely accidental. Cases have been reported from the Caribbean, China, Korea, Thailand, and Philippines. The worm usually inhabits the upper-respiratory region in the trachea, bronchus, or larynx, and can elicit chronic coughing and asthma-like symptoms.
The Culture
The Culture is a fictional interstellar utopian society in which anarchy and socialism are balanced by direct democracy. The Culture was created by the Scottish writer Iain M. Banks and features in a number of his space opera novels and works of short fiction, collectively called the Culture series. In the series, the Culture is composed primarily of sentient beings of the pan-human variety, artificially intelligent sentient machines, and a small number of other sentient "alien" life forms. Machine intelligences range from human-equivalent drones to hyper-intelligent Minds. The Culture's economy is maintained automatically by its non-sentient machines, with high-level work entrusted to the Minds' subroutines, which allows its humanoid and drone citizens to indulge their passions, romances, hobbies, or other activities, without servitude.
Three Corpses
The "sanshi" 三尸 "Three Corpses" or "sanchong" 三蟲 "Three Worms" are a Daoist physiological belief that demonic creatures live inside the human body, and they seek to hasten the death of their host. These three supernatural parasites allegedly enter the person at birth, and reside in the three "dantian" "energy centers", respectively located within the head, chest, and abdomen. After their human host dies, they are freed from the body and become malevolent ghosts. The pernicious Three Corpses/Worms work to harm their host's health and fate by initiating sicknesses, inviting other disease-causing agents into the body, and reporting their host's transgressions to the gods.
Brand
A brand is a name, term, design, symbol, or other feature that distinguishes an organization or product from its rivals in the eyes of the customer. Brands are used in business, marketing, and advertising. Name brands are sometimes distinguished from generic or store brands. The practice of branding is thought to have begun with the ancient Egyptians who were known to have engaged in livestock branding as early as 2,700 BC. Branding was used to differentiate one person’s cattle from another's by means of a distinctive symbol burned into the animal’s skin with a hot branding iron. If a person would steal the animals, anyone could detect the symbol and deduce the actual owner.
Rudolf Virchow
Rudolf Ludwig Carl Virchow (; ; 13 October 1821 – 5 September 1902) was a German physician, anthropologist, pathologist, prehistorian, biologist, writer, editor, and politician, known for his advancement of public health. He is known as "the father of modern pathology" because his work helped to discredit humourism, bringing more science to medicine. He is also known as the founder of social medicine and veterinary pathology, and to his colleagues, the "Pope of medicine". Born and raised in Schievelbein (Świdwin) as an only child of a working-class family, he proved to be a brilliant student. Dissuaded by his weak voice, he abandoned his initial interest in theology and turned to medicine.
1_Apprentice
Yes that is what comes to my mind.  Do you know how common is gender change in humans?
0_Wizard
No I don't know that. But I do know it is used in procedures for intersex people. 
It is also sometimes used for the medical procedures applied to intersex people.
chosen_Sex_change_0
Gender
partner_2_Gender
Intersex
Intersex people are born with any of several variations in sex characteristics including chromosomes, gonads, sex hormones, or genitals that, according to the UN Office of the High Commissioner for Human Rights, "do not fit the typical definitions for male or female bodies". Such variations may involve genital ambiguity, and combinations of chromosomal genotype and sexual phenotype other than XY-male and XX-female. Intersex people were previously referred to as hermaphrodites, "congenital eunuchs", or congenitally "frigid". Such terms have fallen out of favor; in particular, the term "hermaphrodite" is considered to be misleading, stigmatizing, and scientifically specious.
Discrimination against intersex people
Intersex people are born with sex characteristics, such as chromosomes, gonads, or genitals that, according to the UN Office of the High Commissioner for Human Rights, "do not fit typical binary notions of male or female bodies"; "Because their bodies are seen as different, intersex children and adults are often stigmatized and subjected to multiple human rights violations". Discriminatory treatment includes Infanticide, abandonment, mutilation and neglect, as well as broader concerns regarding the right to life. Intersex people face discrimination in education, employment, healthcare, sport, with an impact on mental and physical health, and on poverty levels, including as a result of harmful medical practices.
Intersex human rights
Intersex people are born with sex characteristics, such as chromosomes, gonads, or genitals, that, according to the UN Office of the High Commissioner for Human Rights, "do not fit typical binary notions of male or female bodies." Intersex people face stigmatisation and discrimination from birth, particularly when an intersex variation is visible. In some countries (particularly in Africa and Asia) this may include infanticide, abandonment and the stigmatization of families. Mothers in East Africa may be accused of witchcraft, and the birth of an intersex child may be described as a curse. Intersex infants and children, such as those with ambiguous outer genitalia, may be surgically and/or hormonally altered to fit perceived more socially-acceptable sex characteristics.
Legal recognition of intersex people
Intersex people are born with sex characteristics, such as chromosomes, gonads, or genitals that, according to the UN Office of the High Commissioner for Human Rights, "do not fit typical binary notions of male or female bodies". According to the Asia Pacific Forum of National Human Rights Institutions, few countries have provided for the legal recognition of intersex people. The Asia Pacific Forum states that the legal recognition of intersex people is firstly about access to the same rights as other men and women, when assigned male or female; secondly it is about access to administrative corrections to legal documents when an original sex assignment is not appropriate; and thirdly it is not about the creation of a third sex or gender classification for intersex people as a population but it is, instead, about self determination.
Intersex human rights reports
Intersex people are born with sex characteristics, such as chromosomes, gonads, or genitals that, according to the UN Office of the High Commissioner for Human Rights, "do not fit the typical definitions for male or female bodies". Such variations may involve genital ambiguity, and combinations of chromosomal genotype and sexual phenotype other than XY-male and XX-female. Intersex infants and children may be subject to stigma, discrimination and human rights violations, including in education, employment and medical settings. Human rights violations in medical settings are increasingly recognized as human rights abuses.
Intersex and LGBT
Intersex people are born with sex characteristics, such as genitals, gonads, and chromosome patterns that, according to the UN Office of the High Commissioner for Human Rights, "do not fit the typical definitions for male or female bodies". LGBT, or GLBT, is an initialism that stands for lesbian, gay, bisexual, and transgender. The initialism has become mainstream as a self-designation; it has been adopted by the majority of sexuality and gender identity-based community centers and media in the United States, as well as many other countries. The relationship of intersex to lesbian, gay, bisexual and trans, and queer communities is complex, and many intersex people are not themselves LGBT, but intersex people are often added to LGBT to create an LGBTI community.
Intersex Campaign for Equality
The Intersex Campaign for Equality (IC4E) is a non-governmental organization that advocates for the human rights of intersex people. It was formerly the US affiliate of Organisation Intersex International. The Intersex Campaign for Equality was founded as an affiliate of Organisation Intersex International in February 2011. The founder and director is author and activist Hida Viloria. Dana Zzyym has been the associate director since February 19, 2015, when intersex activists Dr. Dani Lee Harris, Hida Viloria, and Zzyym re-branded the Intersex Campaign for Equality (IC4E). In November 2017, the Campaign announced their departure from Organisation Intersex International.
1_Apprentice
It seem like a lot of risk and trouble to change gender so I guess they must really want it very bad.