Gordon Guyatt
Physician and father of evidence-based medicine
Gordon Guyatt coined the term “evidence-based medicine” and spent a career insisting that clinical decisions follow the data. So when his own systematic reviews found only low-quality evidence for paediatric gender treatments — and he admitted on air to co-signing a statement endorsing those same treatments without reading it — the Beyond Gender hosts were there to put it on record.
Gordon Guyatt is a professor at McMaster University and one of the most consequential figures in modern clinical practice. In 1991 he coined the term “evidence-based medicine” — the now-universal principle that clinical decisions should be grounded in the best available research rather than tradition or authority alone. The phrase and the movement it launched reshaped how doctors around the world are trained to think and practise.
That credential makes his involvement in paediatric gender medicine more than a footnote. Guyatt contributed to systematic reviews examining the evidence base for hormonal and surgical interventions in gender-dysphoric young people. Those reviews returned a consistent verdict: the quality of evidence is low. For a scientist who built his reputation on demanding rigour from the entire medical profession, the implications of that finding were stark.
In episode 36, Gordon Guyatt’s Confession: What the Father of Evidence-Based Medicine Didn’t Read, Stella O’Malley, Mia Hughes and Dr Bret Alderman sit down with Guyatt for a conversation that does not go as expected. He acknowledges that he co-signed a public statement endorsing the very paediatric gender treatments his own reviews had found to rest on low-quality evidence — and that he had not read the statement before signing it. It is a candid, on-record admission almost unheard of in a debate where accountability is routinely avoided, and the hosts do not let the moment pass without examination.
What makes the episode essential listening is not a takedown but a genuine reckoning. Guyatt is a serious scientist confronting a gap between his professional standards and his public conduct in one of medicine’s most contested areas. Stella, Mia and Bret give that tension the space it deserves, and the result is one of the most significant conversations the podcast has produced.
