Gut bacterial metabolite imidazole propionate potentiates Alzheimer's disease pathology.
Authors: Vemuganti V, Kang JW, Zhang Q, McGregor ER, Hilser JR, Aquino-Martinez R, Harding S, Harpt JL, Beck KR, Bussan H, Kuehn JF, Deming Y, Studer R, Johnson SC, Asthana S, Zetterberg H, Blennow K, Engelman CD, Allayee H, Anderson RM, Ulland TK, Bäckhed F, Bendlin BB, Rey FE
Journal: Nature communications
mental health
psychology
open access
Abstract
Classical forensic writing literature and current forensic psychiatry guidance agree that a report is not a neutral record of facts. Rather, it is a disciplined professional opinion prepared for a legal audience. Older forensic report-writing literature emphasized comprehensiveness, scientific impartiality, and the need to avoid recurring failures such as unsupported conclusions, role confusion, and weak linkage between facts and legal questions. Contemporary forensic psychiatry guidance adds that the strength of a report depends on its factual foundation, the explicitness of its reasoning, and the expert’s ability to distinguish verified from unverified information and facts from inferences and impressions []. This is why the core forensic obligations are unusually resistant to automation. The ethics guidance of the American Academy of Psychiatry and the Law (AAPL) states that forensic psychiatrists should adhere to honesty, strive for objectivity, base reports on all available data, and distinguish verified from unverified information. The report-writing guidance of the Canadian Academy of Psychiatry and the Law similarly requires an objective and nonpartisan assessment based on all relevant information, the documentation of omissions, the disclosure of limitations, and an explicit nexus between the report’s data and its final opinions. Those requirements map poorly onto a technology whose primary competence is the fluent prediction of plausible language rather than accountable evidential reasoning []. Forensic practice also carries an established vulnerability to cognitive bias. A 2025 scoping review of forensic psychiatry identified 10 distinct cognitive biases across 24 studies, with gender bias, allegiance bias, and confirmation bias among the most frequently discussed, and concluded that structured methods are more promising for mitigation than simple self-awareness []. This finding is important because one of the appealing myths of AI is that it will neutralize human bias. In reality, AI does not eliminate bias. Rather, it shifts important components of bias from individual clinicians’ cognition to training data, model architecture, reinforcement procedures, interface design, retrieval pipelines, and deployment context.