Earlier this year, clinical epidemiologist Gordon Guyatt co-authored three systematic reviews on different types of gender-affirming care for children and young adults: puberty blockers , hormones , and top surgery . The studies were led by a Ph.D. student, and Guyatt was specifically pulled onto the team to make sure the assessment was as objective as possible.

It’s a strength of his. Guyatt, a professor of health research methods, evidence, and impact at McMaster University in Canada, coined the term “evidence-based medicine” in 1991, and has spent more than 45 years focused on reviewing the safety and effectiveness of myriad medical interventions by authoring systematic evidence reviews and contributing to clinical guidelines. His process for the reviews on gender-affirming care

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