The Declaration of Helsinki, revised: still inconsistent after all these years

In a recent article in this journal, Parsa-Parsi et al describe the revision process that led to the 2024 Declaration of Helsinki. Section 7 of the revised Declaration retains the claim that the purposes of medical research ‘can never take precedence over the rights and interests of individual research participants’. This paper argues that this statement is straightforwardly false—and that Parsa-Parsi et al , despite acknowledging the moral tensions inherent in human subjects research, fail to confront that fact. Standard features of clinical trial design, including randomisation, standardisation of interventions, collection of data that will not alter treatment and withholding of interim results, routinely subordinate participant interests to the goal of answering a research question. This is not controversial; it is the basis on which research ethics regulations worldwide have operated for decades. Yet neither the revised Declaration nor Parsa-Parsi et al ’s account of the revision process addresses how section 7 can be reconciled with these well-understood realities. Instead, the article repeatedly reasserts the primacy of participant interests without engaging with the inherent ways in which everyday research design necessarily compromises them. The Declaration’s credibility depends on honestly stating the principles it actually endorses, rather than restating an aspiration that does not describe—and has never described—the practice it governs. I conclude by showing how this lack of forthrightness may itself contribute to harming research participants by exacerbating the ‘therapeutic misconception’.