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Jennifer Block vs. transgender people

Jennifer Block is an American writer and anti-transgender activist. Block is a central figure in 21st-century media attacks on trans healthcare.

Block is an embedded reporter with anti-trans hate groups like Genspect, attending their events and laundering their extremist views into mainstream media.

Overview

Block believes that US medical consensus about care for trans and gender diverse youth is a scandal in the making. As similar bigots in media did in the late 1970s, Block keeps rewriting the same FUD propaganda piece and selling it to different outlets. The 1979 backlash eliminated healthcare options for many trans people that took four decades to reverse, and Block is at the forefront of this new backlash against our children.

Block’s work focuses on several anti-transgender positions:

  • disease models of gender diversity, especially “gender dysphoria”
  • psychological gatekeeping as a model of care
  • supporting strict gatekeeping of trans healthcare via centralized government control, developed under nationalized heath systems (so-called “gender clinics”) in the 20th century
  • the “rapid onset gender dysphoria” (ROGD) disease model: “More adolescents with no history of gender dysphoria—predominantly birth registered females—are presenting at gender clinics.”
  • disproportionately amplifying outliers and bad outcomes: Andrew Martinez (suicide) and Chloe Cole (ex-trans movement)
  • not describing a single positive outcome
  • the ex-trans movement, especially “detransitioners“

Background

Jennifer Lori “Jen” Block was born on November 22, 1976 to surgeon Leonard Block (born 1948) and Roberta Block (born 1947). Block has two siblings. Block’s parents divorced, which may explain Block’s animosity toward the medical establishment.

Block earned a bachelor’s degree in English from Boston University in 1998. Block held editorial roles at Ms. magazine, Plenty, Our Bodies, Ourselves, and The OpEd Project.

Block’s articles and commentary have appeared in The BMJ, The Washington Post Magazine, Newsweek, The Cut, The New York Times, The Los Angeles Times, The Guardian, Pacific Standard, The Baffler, and Type Investigations (formerly The Investigative Fund at the Nation Institute).

Block is author of Pushed: The Painful Truth About Childbirth and Modern Maternity Care (2007) and Everything Below the Waist: Why Health Care Needs a Feminist Revolution (2019).

“Mommy bloggers” and their fans are especially susceptible to anti-transgender radicalization and social contagion. Block thanks fellow anti-trans extremist Lisa Selin Davis in the acknowledgements for Pushed.

BMJ article series, 2023–

In 2023, Block was commissioned to write an investigative piece for the BMJ. The resulting piece was deeply slanted toward the views of conservative clinicians and anti-transgender activists.

An accompanying video featured conservative therapists Laura Edwards-Leeper and Erica Anderson, and gender-affirming endocrinologist Joshua Safer.

Supporters

Anti-trans activist Helen Joyce said of Block’s article: “Fantastic article, and so important that it appears in BMJ.” Anti-trans organization Rethink Identity Medicine Ethics also liked the piece.

It was also liked and shared by several of Block’s peers, including Sean CW Korsgaard, Liz Highleyman, Mark Tighe, Sonia Gallego, Michael Marshall (@m_c_marshall), Kevin Bass, Vinay Prassad, Dr. Dina McMillan, Milli Hill, Julia Mason, Moti Gorin, Charlotte Schubert, and Benjamin Ryan.

The staff at The BMJ issued a statement:

The BMJ believes in investigative journalism as a force for change. Over the past decade, our investigative journalism has unearthed research fraud and misconduct, prompted improvements in the transparency of clinical research, led to changes in guidelines and clinical practice, and triggered parliamentary inquiries.

High quality investigative journalism requires time to research, gather evidence, and ask questions. Developing in-depth stories is expensive, and we actively seek external funding to help expand our efforts. Current no-strings funding comes from Arnold Ventures and William McGuire. Past supporters include the European Commission and Open Society Foundations. In 2022, we hope to expand our impact through crowdfunding. If you would like to support us, please contact Head of Journalism Rebecca Coombes.

We retain editorial independence—the freedom of editors to make decisions without interference from any funders—for all content that is produced and published; all decisions are taken strictly within the editorial structures of the journal.

If you have a story for us, please contact [email protected].

Rebecca Coombes, Head of Journalism
Peter Doshi, Senior editor
Madlen Davies, Investigations editor
Jennifer Block, Investigations reporter
Hristio Boytchev, Freelance investigations reporter

Critics

The Association of LGBTQ+ Doctors & Dentists (GLADD), Pride in Surgery Forum, and the British Medical Association all published criticisms of the piece.

British Medical Association deputy council chair Emma Runswick said:

We have recently written to the BMJ, which is editorially independent, to challenge its article “Gender dysphoria in young people is rising—and so is professional disagreement” and express our concern, that alongside criticisms made by LGTBQ+ organisations such as GLADD and neurodivergent doctors, in our view, it lacks equality, diversity and inclusion awareness and patient voice. That the article has been used by transphobic lobby groups around the world is of particular concern to us.

2023 Twitter responses

Block was very unhappy about being called out for bias, posting a number of times on Twitter about this alleged mistreatment, suggesting any criticism is an attack on journalism.

February 27

  • Since my @bmj_latest piece on care for gender dysphoria in minors, some are curious about my background. I’ve been reporting on contested areas of medicine for 20 years. I wrote a book about the gap between evidence and routine practice in maternity care (still quite large!).
  • Politicization gets people no closer to evidence-based maternity care either, and I’d argue it hampered work toward expanding rights and reducing maternal mortality. In states that have advanced birth justice, it’s the result of red/blue folks accepting they have a common goal.
  • I see dismissing any clinician or researcher who has concerns about the best treatment for kids/adolescents in the face of inconclusive evidence as “anti-trans” as an attempt to silence important conversation and debate. I hope my piece is contributing.
  • FWIW, the organizer of the AAP rally I spoke with, who directed me to video footage, is a lifelong coastal democrat. You can’t just smear every person with concerns RE treatments, or the concerns themselves, as “anti-trans.” At least I’m not going to be baited into that tautology

March 3

  • https://twitter.com/writingblock/status/1631768413378084864
  • TLDR: Dear reporters, don’t report on transgender medicine. Don’t be curious about detransition or medical disagreement. Label the above anti-trans. Quote children of all ages rather than research. Cover “trans joy rather than the ‘difficult’ questions.”

March 5 [referring to anti-trans media figure Michael Knowles saying transgenderism must be eliminated.

  • https://twitter.com/writingblock/status/1632464903046066177
  • THIS is anti-trans–and violent and inhumane. Reporting on disagreement and unknowns in medical practice for children with gender dysphoria is not. Both the trans community and journos can condemn such rhetoric and support open exchange of info & dialogue to support Rx decisions

This is in response to an opinion piece by trans journalist Katelyn Burns.

  • [referring to https://nbcuacademy.com/trans-kids-journalism/#.ZAIfHq868m8.twitter]
  • OK, this was a snarky tweet. But it’s a serious issue. A certain corner of journalism is conflating necessary, important reporting on the issue of medical treatment for kids with transphobia. I read this piece as saying “look over here, don’t look over there.” That’s advocacy.
  • Maybe @transscribe is not familiar with my recent piece looking into the evidence base for treatments like puberty blockers and hormones in minors. She can correct me if I’m wrong, but I read her how-to as discouraging such reporting.
  • “A story about trans health care should make clear all the facts… They should include that nearly every major medical association supports the current protocol of gender-affirming care for minors.” Well, as I report, consensus does not equal evidence-based practice.
  • Reviews in Sweden, Finland, and now UK have made clear the uncertainties and potential for harm, and those countries are pulling back on medicalization and focusing instead on mental health and social support. They are not denying anyone’s existence. It’s not political there.
  • For years, these labels of “anti-trans” “transphobe” and accusations of genocide have scared journalists who are obviously not those things from pursuing reasonable questions about benefit v. harm of medical treatment. This is regressive and I hope we’re moving past it.

Author Katelyn Burns replied “but you obscured the biases of the sources your piece depended upon. that’s advocacy.”

Block said:

  • https://twitter.com/writingblock/status/1632446552668266496
  • You haven’t pointed to any such thing. Everyone is ID’d with their relationship to professional orgs. The research methodologists who evaluated the guidelines/evidence base have no history with this issue whatsoever. Just hurling the label of “anti-trans” doesn’t make it so.

2024 Free Press piece attacking Planned Parenthood

Free Press founder Bari Weiss is known for sustained attacks on trans rights. Weiss paid Block to continue these attacks by crticizing Planned Parenthood.

In 2024, Block employed the same rhetoric used in anti-abortion regret propaganda in a profile of Cristina Hineman, an ex-trans activist who reports regret about making a gender transition as a consenting adult. Block then approvingly describes the legal assault on Planned Parenthood initiated by Hineman. Block then tells a similar story about “Anna,” likely the plaintiff in a similar Jane Doe lawsuit. Throughout the piece, Block denigrates trans-supportive physicians and promotes anti-trans gatekeepers like Riittakerttu Kaltiala.

2025 short film

In July 2025, Block started a Substack titled Unpopular Science. Its first post was a short propaganda piece produced with Eric S. Vaughan titled “The Liberal Case for Rethinking Gender Medicine.” Block notes:

“The genesis for this film was the investigative feature I wrote for The BMJ, which came out in February 2023. My editors committed serious resources toward producing a high-quality video component. But my print piece drew the ire of the British Medical Association, which owns the journal, and ultimately the video and follow-up reporting were killed.”

The piece features anti-trans activists Jamie Reed and Lauren Leggieri from LGB Courage Coalition, as well as Hilary Cass, Hannah Barnes, Zhenya Abbruzzese, Laura Edwards-Leeper, and Moti Gorin. It continues Block’s attacks on WPATH, Rachel Levine, and the American Academy of Pediatrics.

References

Urquhart, Evan (November 8, 2023). If Gender Affirming Care Doesn’t Have Enough Evidence, Should We Prefer a Treatment With None? Assigned Media https://www.assignedmedia.org/breaking-news/if-gender-affirming-care-doesnt-have-enough-evidence-should-we-prefer-a-treatment-with-none

Runswick, Emma (June 19, 2023). Take Pride in progress. The Doctor https://www.bma.org.uk/news-and-opinion/take-pride-in-progress

Selected anti-trans writing by Block

Block, Jennifer (July 8, 2025). The most heated and divisive issue of our time — in 18 minutes. Unpopular Science https://jenniferblockauthor.substack.com/p/the-most-heated-and-divisive-issue

Block J (October 2024). Dispute arises over World Professional Association for Transgender Health’s involvement in WHO’s trans health guideline. BMJ, q2227. https://doi.org/10.1136/bmj.q2227

Block, Jennifer (August 7, 2024). How Did Planned Parenthood Become One of the Country’s Largest Suppliers of Testosterone? The Free Press https://www.thefp.com/p/how-did-planned-parenthood-become

Block J (May 2024). Gender medicine in the US: how the Cass review failed to land. BMJ, q1141. https://doi.org/10.1136/bmj.q1141

Block, Jennifer (November 7, 2023). Youth gender medicine has become a hall of mirrors. Boston Globe http://www.bostonglobe.com/2023/11/07/opinion/gender-affirming-care-trans-kids

Block J (August 2023). US paediatric leaders back gender affirming approach while also ordering evidence review. BMJ, p1877. https://doi.org/10.1136/bmj.p1877

Block, Jennifer (March 6, 2023). Raft of US state laws restrict access to treatments for gender dysphoria. BMJ 2023; 380 https://doi.org/10.1136/bmj.p533

Block, Jennifer (February 23, 2023). Gender dysphoria in young people is rising—and so is professional disagreement. BMJ 2023; 380 https://doi.org/10.1136/bmj.p382

  • “her article contains several misleading statements and, crucially, fails to include the perspective of individuals from the trans and gender diverse (TGD) community”
  • Zoe Kristensen and David B Menkes [Department of Psychological Medicine, University of Auckland, New Zealand] (06 March 2023). Professional responses to gender dysphoria: reality checks needed. https://www.bmj.com/content/380/bmj.p382/rr-3
  • “the mention of neurodivergence when speaking about transgender people is to imply that there is less capacity for making good choices about our bodies, evaluating risks and benefits.”
  • “Samira Khan,” Matthew Sellen, and Bethan Carey Jones [neurodivergent health professionals] (16 March 2023). Diversity in gender identity and neurotypes. https://www.bmj.com/content/380/bmj.p382/rr-8

Resources

Jennifer Block (jenniferblock.com)

Substack (substack.com)

X/Twitter (x.com)

YouTube (youtube.com)

Instagram (instagram.com)

LinkedIn (linkedin.com)

The Free Press (thefp.com)