Transgender People

Transgender identities are in the news a lot lately. Learn about transgender identities and what scientists have to say about their origins.

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Hi! I’m here to help you explore what it means to be transgender. There’s a lot of attention, confusion and questions around this topic these days, so let’s start with the basics: ‘Transgender’ is not a sexual orientation. It’s about the intersection of gender identity (our core sense of who we are), gender expression (how we show up in the world) and biological sex (the physical parts we’re born with). Come on, let’s dive in…

The Basics

Explore what it means to be transgender.

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Terms to know

There's a lot of terminology around transgender identities. Here's a quick introduction to terms you'll want to know.

Real people

Transgender people discuss their identities and experiences.

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"I was worried that you liked me as a girl"

Listen to a conversation between Gabe, a young transgender boy, and his mom, Chris Lopez.

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“Why did God make me wrong?”

Learn about Jacob and his family's journey from confusion to acceptance.

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"It's just how you really are inside"

Watch this update for the latest on Jacob and his family's story.

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"I had to do something"

Ryland Whittington knew he was a boy. The question was, would other people accept that?

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"It was like a weight off my shoulders"

Watch to learn why Kaleb's mom considers him to be "one of the bravest people" she knows.

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Growing up transgender and Mormon

“I had this fantasy . . . that a fairy godmother would come and turn me into a girl and make everything better.”

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"I went as macho as I could be"

Alexis grew up in the 1960's in a housing project. Being open about her transgender identity was not an option.

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The life journey of a Black trans woman

"There’s a teenaged girl I didn’t quite get to be and I’ve built the life she would have wanted.”

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"We're the front-liners"

Sylvia Rivera was a tireless advocate for transgender people and the larger LGBTQ+ community, yet few people have heard of her. Learn about her struggles and accomplishments.

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"True to Himself"

Read about the first openly transgender swimmer in NCAA Division I athletics.

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"You are my sister"

Two transgender veterans share their story of friendship and unconditional love.

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"Ex-GI Becomes Blonde Beauty"

Christine Jorgensen gained fame as a transgender woman at a time when most members of the LGBTQ+ community were attacked and vilified.

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Being an authentic ally

She was a passive ally. Then, her husband revealed he was transgender.

Double Jeopardy

Transgender women of color face distinct challenges

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Killed for being transgender

Learn why the American Medical Association is warning of an “epidemic” of violence against transgender persons, with transgender women of color the most frequent victims.


What does it mean for a person to transition? This section covers the essentials.

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Making the decision to transition

Decisions around transitioning are highly personal and vary from one individual to the next.

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The different approaches to transitioning

Transitioning doesn’t always involve surgery.

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A new standard of care

No more “watchful waiting.” Read why the American Academy of Pediatrics advocates a gender-affirming approach in caring for transgender and gender-diverse children.

The Science

Scientists are researching the biological basis of transgender identities.

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Understanding our brain

Neuroscientists are comparing brain structure and function in transgender and cisgender persons with notable results.

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How transgender research is changing science

As transgender awareness grows in society, science is catching up. Find out what’s being done to close that gap and what we’ve learned so far.

The Stats

How many people are transgender? It might be more than you think.

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Transgender population in the US

Explore the state-by-state data on the distribution of transgender people by age across the U.S.

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Transgender teenagers in the US

Estimates show there could be nearly 150,000 transgender teenagers in the US.



(Adj.) Describes a person who does not identify with any gender. Learn More

Androgyne / Androgyny / Androgynous

(Adj.) Identifying and/or presenting as neither masculine nor feminine. Learn More


(Adj.) Refers to a match between gender identity and sex characteristics observed at birth, i.e., a person born with female anatomy who identifies as a girl/woman. Learn More


(Noun) A social construct used to classify a person as a man, woman, or some other identity and ascribe qualities of masculinity and femininity to people. Gender characteristics can change over time and vary between cultures. Learn More

Gender dysphoria

(Noun) Clinically significant distress caused when a person does not identify with the sex they were believed to be at birth. Can also describe a desire to change the characteristics that are the source of the distress, such as physical anatomy. Learn More

Gender expression

(Noun) The ways that a person communicates a gender identity to others such as dress, behavior, hairstyle, voice, and/or mannerisms. Learn More

Gender fluid

(Adj.) Describes a person who identifies their gender as shifting within a spectrum of gender identities and expressions. A person who is gender fluid may always feel like a mix of two (or more) genders, but may feel more one gender some days, and another gender other days. Gender-fluid people may or may not also identify as transgender. Learn More

Gender identity

(Noun) One’s deeply held, core sense of being a man, woman, or some other gender. A gender identity can be a combination of two or more genders (such as gender fluid), and some individuals don't identify with any gender at all--described as being agender. Learn More

Gender non-conforming

(Adj.) Describes a person who does not behave in a way that conforms to traditional expectations for their gender, or whose gender expression does not fit neatly into a category. Also known as gender variant. Learn More

Sex / Sex assigned at birth / Biological sex

(Noun) A person's sex (male, female, or intersex) is often determined based on the appearance of the genitalia, either in ultrasound or at birth. In reality, biological sex is more complicated, referring to a combination of anatomical, physiological, genetic, and physical attributes. These include genitalia, gonads, hormone levels, hormone receptors, chromosomes, genes, and secondary sex characteristics. The phrase "sex assigned at birth" is used by some to emphasize that genitalia alone are not always a sufficient indication of a person's sex, as well as the fact that a person's gender identity is not always aligned with the sex characteristics observed at birth. Learn More

Transgender / Trans*

(Adj.) Describes a person whose gender identity does not match their sex characteristics observed at birth. People who identify as transgender (sometimes shortened to "trans") may or may not decide to alter their bodies hormonally and/or surgically to match their gender identity. This word is also sometimes used as a broad umbrella term to describe those who transcend conventional expectations of gender identity or expression, such as people who identify as genderqueer, gender variant, gender diverse, or androgynous. Learn More


(Noun) The process by which some people strive to more closely align their outward appearance with their internal feelings/perceptions of their gender. This may, but does not always, include hormone therapy, surgical or other medical procedures, and changing names, pronouns, identification documents, and more. Often referred to as gender transition. Learn More

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Citations & Sources

A guide to transgender terms. (2015, June 3). BBC News Magazine.

Bakker, J. (2018) Brain structure and function in gender dysphoria. Presented at the 20th European Congress of Endocrinology. Endocrine Abstracts, 56(S 30.3).

Bodkin, H. (2018, May 22). Transgender brain scans promised as study shows structural differences in people with gender dysphoria. Telegraph.

Burke, S., Kreukels, B., Cohen-Kettenis, P., Veltman, D., Klink, D., & Bakker, J. (2016). Male-typical visuospatial functioning in gynephilic girls with gender dysphoria - organizational and activational effects of testosterone. Journal of Psychiatry & Neuroscience, 41(6), 395–404.

Chokshi, N. (2017, February 23). One in every 137 teenagers would identify as transgender, report says. New York Times.

Cornell University. (n.d.). What does the scholarly research say about the effect of gender transition on transgender well-being? What We Know: The Public Policy Portal.

Database of transgender homicides 2010-2018. (2019). Mic.

Eligon, J. (2017, August 6). Transgender African-Americans’ open wound: ‘We’re considered a joke’. New York Times.

Elijah/Esther. (2015, May 4). New York Times.

Fitzsimons, T. (2018, September 17). Pediatric group recommends 'affirmative care' for transgender youth. NBC News.

Flores, A.R., Herman, J.L., Gates, G.J. & Brown, T.N.T. (2016) How many adults identify as transgender in the United States? Williams Institute, UCLA School of Law.

Garcia-Falgueras, A. & Swaab, D.F. (2008). A sex difference in the hypothalamic uncinate nucleus: relationship to gender identity. Brain: A Journal of Neurology, 131(12), 3132-3146.

Garloch, K. (2017, February 6). ‘I want to be a girl all the time,’ child told parents. Now, mom’s story helps others. Charlotte Observer.

Getahun, D., Nash R., Flanders W.D., Baird, T.C., Becerra-Culqui, T.A., Cromwell, L., Hunkeler, E., Lash, T.L., Millman, A., Quinn, V.P., Robinson, B., Roblin, D., Silverberg, M.J., Safer, J., Slovis, J., Tangpricha, V., & Goodman, M. (2018). Cross-sex hormones and acute cardiovascular events in transgender persons: A cohort study. Annals of Internal Medicine, 169(4), 205–213.

Hendricks, M.L. & Testa, R.J. (2012). A conceptual framework for clinical work with transgender and gender nonconforming clients: An adaptation of the Minority Stress Model. Professional Psychology: Research and Practice, 43(5) 460-467. doi:10.1037/a0029597

Herdt, G. (1996). Third sex, third gender: Beyond sexual dimorphism in gender and history. Zone Books.

Herman, J.L., Flores, A.R., Brown, T.N.T., Wilson, B.D.M., & Conron, K.J. (2017). Age of individuals who identify as transgender in the United States. Williams Institute, UCLA School of Law.

Heylens, G., Verroken, C., De Cock, S., T’Sjoen, G., & De Cuypere, G. (2014). Effects of different steps in gender reassignment therapy on psychopathology: A Prospective study of persons with a gender identity disorder. The Journal of Sexual Medicine., 11(1), 119–126.
Hoffman, J. (2016, June 30). Estimate of U.S. Transgender population doubles to 1.4 million adults. New York Times.

Khaleeli, H. (2014, April 16). Hijra: India’s third gender claims its place in law. Guardian.

Kincaid, A. (2016, August 23). Why I had to come out as a black trans woman. HuffPost.

National Geographic. (2015, October 20). Growing up transgender and Mormon | Short film showcase [Video]. YouTube.

Nature Video. (2019, April 2). Understanding transition [Video]. Youtube.

Office for Victims of Crime. (2014, June). Responding to transgender victims of sexual assault.

Rafferty, J., AAP Committee on Psychosocial Aspects of Child and Family Health, AAP Committee on Adolescence, AAP Section on Lesbian, Gay, Bisexual, and Transgender Health and Wellness. (2018, October). Ensuring comprehensive care and support for transgender and gender-diverse children and adolescents. Pediatrics, 142(4).

Raypole, C. (2016, June 29). What does it mean for a transgender person to transition? Good Therapy.

Reardon, S. (2019, April 24). The largest study involving transgender people is providing long-sought insights about their health. Nature.

Rojas, R. & Swales, V. (2019, September 27). 18 Transgender killings this year raise fears of an epidemic. New York Times.

Snow, K. (2015, April 23). Jacob’s journey: Life as a transgender 5-year old. NBC News.

StoryCorps. (2013, May 5). Alexis Martinez and Lesley Martinez Etherly [Audio Podcast].

StoryCorps. (2016, May 1). Chris López and Gabe López [Audio Podcast].

Stotzer, R.L. (2017). Data sources hinder our understanding of transgender murder. American Journal of Public Health, 107(9), 1362–1363.

Wu, K.J. (2016, October 25). Between the (gender) lines: The science of transgender identity. Science in the News.

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