Peter Sim's Substack

The Lawsuits Begin

How will a $2 million verdict in New York affect gender medicine?

Feb 10 • Peter Sim

36

14

9

January 2026

Gender Medicine and the Pseudo-systematic Review

How the Utah Review Misleads the Public

Jan 22 • Peter Sim

32

4

1

Around the World in Gender Medicine, Part 2

Change and Controversy

Jan 9 • Peter Sim

19

9

November 2025

The Health and Human Services Evidence Review on Pediatric Gender Dysphoria Redux

Publication of the authors’ names and peer review establishes the Review as a trustworthy document

Nov 21, 2025 • Peter Sim

27

4

4

October 2025

The Unintelligibility of Conversion Therapy Directed at Gender Identity

An alternative basis for challenging conversion therapy laws

Oct 23, 2025 • Peter Sim

22

26

4

Around the World in Gender Medicine

Political and scientific debate is driving change

Oct 3, 2025 • Peter Sim

36

10

11

September 2025

More on the McMaster Mess

How Gordon Guyatt's comments misrepresent the role of systematic reviews.

Sep 6, 2025 • Peter Sim

32

4

3

July 2025

The Sullivan Review of data, statistics and research on sex and gender

The conflict between reality-based norms and gender identity theory in the United Kingdom.

Jul 28, 2025 • Peter Sim

29

4

4

June 2025

Adults Only?

Should bans on gender affirming care be extended beyond minors?

Jun 21, 2025 • Peter Sim

51

14

17

Quebec Re-examines Gender Identity

A review of the report of the Comité de sages on gender identity

Jun 7, 2025 • Peter Sim

22

10

2

May 2025

A Cass Review for America?

A first look at the Health and Human Services Review of Pediatric Gender Medicine

May 4, 2025 • Peter Sim

154

39

27

April 2025

Gender Ideology and the Canadian Federal Election

Is no news good news?

Apr 7, 2025 • Peter Sim

29

10

7