Ending the NIH embargo accelerated public access to funded research, but substantial delays remain

The National Institutes of Health's (NIH) policy change, effective July 1, 2025, which eliminated the 12-month embargo on publicly funded research, significantly accelerated the public availability of NIH-supported articles in PubMed Central. Compared to non-federally funded articles, NIH-supported research saw a 5.6 percentage point increase in availability within one week of publication. This effect was most pronounced in journals not listed in the Directory of Open Access Journals, where immediate access doubled from 11% to 22%. Despite this acceleration, the analysis indicates that substantial delays in public access still exist.

This development indicates that policy changes can significantly influence the speed and breadth of public access to research outcomes, thereby enhancing transparency and knowledge dissemination. Organizations and research institutions relying on public funding or engaging in publicly accessible research must understand the impact of such mandates on their publication strategies and compliance requirements. It also highlights the ongoing challenge of achieving fully immediate and open access across all publishing venues.

The NIH policy change in July 2025 eliminated the 12-month embargo on public access to funded research, mandating immediate availability in PubMed Central.

Forward consideration, not a verified fact.