Mary Gray, Kendra Blalock, Kyn Kappesser, Jae Corman, Gillian Leichtling, 2026. Gender-affirming care for transgender and gender-diverse youth in Oregon: trends over time, Research Connections, Volume 1, Issue 2, April 2026, vmag049, https://t.co/a1U70KsRgs, 7 May 2026.
MJ Joyner , SK Hunter, JW Senefeld, 2024. Evidence on sex differences in sports performance. J Appl Physiol. 2024 Dec 24;138(1):274-281. https://t.co/khljBJpNi6, December 2024.
Florian Kurth, Christian Gaser, Francisco J. Sánchez and Eileen Luders, 2022. Brain Sex in Transgender Women Is Shifted towards Gender Identity. Journal of Clinical Medicine. 2022; 11(6):1582. https://t.co/rsfdXo8a5j, 13 March 2022.
I’ve requested the subject-level Brain Sex Index data behind Kurth et al., 2022. Brain sex in transgender women is shifted towards gender identity. JCM.
While I wait, some open questions on the published methods and conclusions.
Tim Janicke, Göran Arnqvist, Pierre-André Crochet, et al. 2026. “ Biological Sex Is Binary and Rooted in Anisogamy.” Ecology Letters29, no. 7: e70426. https://t.co/p2myG0Nt2c, 10 July 2026.
Amnesty UK, 2026. "A Growing Threat – the Anti-Rights Movement in the UK." https://t.co/j1LYgocsWL, 8 July 2026.
Removed "for review" after legal complaints, but still mirrored at https://t.co/6g7vRbJBG7.
Graphic from EN Hilton and TR Lundberg, 2021. Transgender Women in the Female Category of Sport: Perspectives on Testosterone Suppression and Performance Advantage. Sports Med 51, 199–214 (2021). https://t.co/e8nvp3Fq3C, February 2021.
Strength advantage over females is retained by Male to Female transitioners
While M to F experience some decrease in muscle mass; values for strength and muscle area in transwomen remain above those of biological women, even after 36 months of hormones
https://t.co/6PbZHUci20
MA Schneider, PM Spritzer, BMB Soll, AMV Fontanari, et al, 2017. Brain Maturation, Cognition and Voice Pattern in a Gender Dysphoria Case under Pubertal Suppression. Front. Hum. Neurosci. 11:528. doi: 10.3389/fnhum.2017.00528, https://t.co/JgpKXgr4Hb, 13 November 2017.
MA Schneider, PM Spritzer, BMB Soll, AMV Fontanari, et al, 2017. Brain Maturation, Cognition and Voice Pattern in a Gender Dysphoria Case under Pubertal Suppression. Front. Hum. Neurosci. 11:528. doi: 10.3389/fnhum.2017.00528, https://t.co/JgpKXgr4Hb, 13 November 2017.
A 2017 case study of a boy who was put on puberty blockers shows a significant drop in intellectual capacity: a 15 point drop in verbal comprehension, a 10 point drop in global IQ, and a 9 point loss in working memory.
Make no mistake: blockers have had a significant, devastating impact on this boy’s intelligence. That 10-15 points could be the difference between graduating from college and not, or between going to college and not; or even between living independently and not. This child’s life has been forever altered, his mental abilities forever limited, all so that he can more effectively imitate the opposite sex.
The intellectual damage being done to these kids is the worst of it, but IQ is by no means the only thing they lose when taking this medication. Dr. Marci Bowers, president of the World Professional Association for Transgender Health, was recorded admitting that blockers destroy a child’s ability to experience arousal and orgasm in adulthood so effectively that 100% of boys who take them between the ages of 9 and 11 are affected in this manner.
Puberty blockers destroy children’s futures. They are toxic, dangerous drugs that are otherwise prescribed either as medications of last resort to treat aggressive prostate cancer, or as chemical castration medication for sex offenders. They are so toxic, in fact, that the sex offenders who are ordered to take them are often taken off of them by doctors’ orders so as to preserve their health. Prescribing them to children in order to treat a condition that resolves itself 84% of the time is insanity.
And let’s be honest – that’s not why these kids are being given this medication. They are being given this medication because the adult transvestites who control the narrative resent the fact that they themselves have trouble passing. They are willing to destroy these childrens’ intellectual and sexual futures in order to make them more effective mimics of the opposite sex.
Now the UK is running a puberty blocker trial. The children who participate will be irrevocably harmed in the process — and the people running study know this. The data is already in, and to continue destroying children’s futures as a sop to trans-identifying adults is inexcusable.
MA Schneider, PM Spritzer, BMB Soll, AMV Fontanari, et al, 2017. Brain Maturation, Cognition and Voice Pattern in a Gender Dysphoria Case under Pubertal Suppression. Front. Hum. Neurosci. 11:528. doi: 10.3389/fnhum.2017.00528, https://t.co/JgpKXgr4Hb, 13 November 2017.
study of a single child on puberty blockers showed he lost significant IQ. There are lots of unanswered qs on what blockers do in children and impacts won’t be known until adulthood. Which has implications for the proposed pathways trial <sigh>
#FirstDoNoHarm@CanSG_org
The Times View, 2026. Trial and Error: A clinical study of puberty blockers for young people should not be allowed to go ahead. https://t.co/HwSTOCoRtV, 1 July 2026.
The Times has come out against the Puberty Blockers Trial. As a nation we should not have our NHS experiment on our own children - please write to your MP!
Leor Sapir, 2026. Another Major Transgender Suicide Study Crumbles. A widely cited study claimed that “anti-transgender laws” encourage teen suicide attempts. A new review dismantles it. City Journal, https://t.co/Gp2DQ5wRxD, 16 June 2026.
William McGurn, 2026. Girl Dads Take On Maine: Meet the men behind a ballot initiative to protect female spaces from boys and men. Wall Street Journal [opinion], https://t.co/Obl1OKsrIt, 15 June 2026.
S Weyers, H Verstraelen, J Gerris, S Monstrey, G Santiago, et al, 2009. Microflora of the penile skin-lined neovagina of transsexual women. BMC microbiology, 9, 102. https://t.co/R3IfXsip0n, 20 May 2009.
Jeffrey M Jones, 2026. US Support for LGBTQ+ Issues Remains Down From Peak. Gallup Press Release, https://t.co/Jsw07BOuQC, 3 June 2026.
PDF download at https://t.co/e9UAny82Wb.
Mary Gray, Kendra Blalock, Kyn Kappesser, Jae Corman, Gillian Leichtling, 2026. Gender-affirming care for transgender and gender-diverse youth in Oregon: trends over time, Research Connections 1:2, April 2026, vmag049, https://t.co/a1U70KsjqU, 7 May 2026.
Amnesty International UK, 2026. Like a snowball: the growth and impact of the gender critical movement in the UK. https://t.co/0IHrNhrpDY, 21 May 2026.