Answers to question

Q. How many transsexual people are there in the world?

A. It depends on your definition of Transgendered.
Only falling under the general term of transsexual. The DSM1 IV estimates 1 in 30 thousand males are transgendered and 1 in 100 thousand females have identified themselves as having very strong trans feelings. {Definition of Transgender being born one physical sex, but their actual sex is different. Does not account for crossdressers2, gender benders3, people who are blends4, intersexed5, duo-genders6 or others also called gender queer7.}
Lynn Conway, a well known activist for transsexuals, estimates that 1 in 1,000 males has had GRS8 or SRS9. {in the US} If this is correct then there would be about 500,000 transgendered males in the US who have had SRS/GRS.


Using Transgendered as Generic No one knows the actual number: it's not printed on people's foreheads.
Using the broad term transgendered as anyone not conforming to generic society's binary set of genders and gender roles, many people are 'closeted' and so can't be counted, many don't even realize that they actually are transgendered and not crazy, but this would include genderbenders, dual-genders, crossdressers/transvestites, intersexed, blends and gender queer persons:
If 1 in 1,000 is a transsexual who has had surgery, at least another 1 in 1,000 hasn't had the surgery but is in some way or another transgendered.
Using the above calculation, 1,000,000 (1 million) men in the U.S. are transgendered, making it 1 in 500. If this applies worldwide (broad assumption) then 14,000,000 (14 million) men worldwide are transgendered - not including women. Using the DSM IV's estimate of 3 : 1 (transsexuals) then 14,000,000 men and 4,666,000 women for a total guesstimate of at least 18,666,000 transgendered persons worldwide. Read more: http://wiki.answers.com/Q/How_many_people_in_this_world_are_transgender#ixzz1Q5anRH4K



"How many people in this world are transgender?." Answers.com n. pag. Web. .

What is the differences between sex and gender?
Sex is either male or female, and gender is either masculine or feminine. In other words, sex is refered to biological differences, hormones, and internal and external sex organs. Whereas gender describes the characteristics that a society or culture expresses  as masculine or feminine. There is a clear formula demonstrating the explanation given above on the website from Monash University: http://www.med.monash.edu.au/gendermed/sexandgender.html

Nobelius, Anne-Maree. "What is the difference between sex and gender?." n. pag. Web. 23 Jun 2004. <http://www.med.monash.edu.au/gendermed/sexandgender.html>.

Q.What is gender identity disorder?

A.There are two components of Gender Identity Disorder, both of which must be present to make the diagnosis. There must be evidence of a strong and persistent gross-gender identification, which is the desire to be, or the insistence that one is of the other sex (Criteria A). This cross-gender identification must not merely be a desire for any perceived cultural advantages of being the other sex. There must also be evidence of persistent discomfort about one's assigned sex or a sense of inappropriateness in the gender role of that sex (Criteria B). The diagnosis is not made if the individual has a concurrent physical intersex condition (e.g., androgen insensitivity syndrome or congenital adrenal hyperplasia) (Criteria C). To make the diagnosis, there must be evidence of clinically significant distress or impairment in social, occupational, or other important areas of functioning (Criteria D).

"What is gender identity disorder?." abc 20/20 (2008): n. pag. Web. 27 Jun 2008. .

Q.What is gender dysphoria?

A.Gender dysphoria is a medical condition characterized by a disconnection between someone's assigned and perceived genders. Individuals with gender dysphoria usually identify themselves as transgendered or transsexual, depending on their ideological feelings about sex and gender. Some transgendered individuals also disagree with the categorization of gender dysphoria as a medical condition, as part of a larger exploration of gender identity and what “normal” gender is. It is also important to differentiate a transvestite from someone with gender dysphoria; medically, a transvestite is someone who wears clothing belonging to the opposite gender, but is both happy and secure with his or her gender identity.

"What is gender dysphoria?." wiseGEEK n. pag. Web. 16 Jun 2011. .

questions

1. What is transsexualism?
2. What is involved in the transition process?
3. What causes transsexualism?
4. What is the treatment for transsexualism?
5. How common is transsexualism?
6. Is transsexualism the same as homosexuality?
7. What is the differences between sex and gender?
8. What is the difference between transsexualism and transgender?
9. What is the difference between gender dysphoria and gender identity disorder?
10. What is gender disphoria?
11. What is gender identity disorder?
12. What is difference between male cross dresser and a man wanting to be a woman?
13. What are the best support systems for individuals with gender dysphoria?
14. What is the country with the most number of transsexual people?
15. How many transsexual people are there in the world?

web sites

Wikipedia
This site defines transsexualism, and it gives information about the diagnosis, relation to gender roles, origins, relation to transgenderism, terminology, prevalence, causes, sex reassignment therapy, leagal and social aspects, coming out, regrets and detransitions, in the media, customs and transitions, and more.
It defines transsexualism like this: transsexualism is an individual’s identification with a gender inconsistent or not culturally associated with their biological sex. A medical diagnosis can be made if a person experiences discomfort as a result of a desire to be a member of the opposite se, or if a person experiences impaired functioning or distress as a result of that gender identification.
It might not be the best site, because anyone can revise and edit the information on this site, so it doesn’t have reliability.

"Transsexualism." Wikipedia, the free encyclopedia. Wikimedia Foundation, Inc., 11 may 2011. Web. 12 May 2011. .

Basic TG/ TS/ IS Information
by Lynn Conway
This site describes transsexualism very well.
It has three parts: Part 1 Gender Basics and Transgenderism, Part 2 Transsexualism, Part 3 Life as a Woman After TS Transition. Also it gives additional reference webpages such as TS Women’s Resources, TS Women’s Successes, Facial Feminization Surgery, TG/TS/IS Info Links, Successful TransMen, Sex Reassignment Surgery.
This site answers frequently asked questions, and it is very useful.
Conway, Lynn . "Basic TG/TS/IS ." Lynn's homepage. N.p., 26 05 2000. Web. 12 May 2011. .

web sites