How the NIH is Changing How It Funds Medical Research

The National Institutes of Health — the federal agency that funds most U.S. medical research — has overhauled how it decides which projects get money. The changes include a simpler way for scientists to pitch their work, but also give government officials more say in which studies receive funding.

What Changed in the Review Process

For decades, the NIH used the same basic method to decide which research proposals were worth funding. A panel of scientists would read each application and score it on multiple factors: How important is the research? Is it creative? Are the researchers qualified?

Starting in 2025, the NIH streamlined this. Now reviewers give just one overall score instead of multiple separate scores. This single score reflects whether the project is likely to have a real impact on the field.

The NIH said the old system was too complicated and could let personal feelings about scientists — not just the quality of their work — influence which projects got approved. The agency also made changes to how it reviews fellowship applications, which are grants for individual researchers early in their careers.

More Government Control Over Funding Decisions

Here is where things get more significant. An executive order in August gave political appointees at federal agencies power to block any grant that doesn't match agency priorities. Before this, the recommendations from peer reviewers — the scientists evaluating the work — were treated as the main basis for funding decisions.

The new guidance tells senior officials they should not automatically follow what peer reviewers recommend. This marks a real shift. For the past 80 years, federal science funding has been built on the idea that scientific merit — the quality and importance of the work — should drive which projects get money.

The concern from scientists and NIH leaders is straightforward. If political appointees can override peer review, they could block high-quality projects they disagree with and approve weaker projects they prefer. This would weaken the system that has successfully directed billions in public money toward medical breakthroughs.

How This Happened

The peer review changes didn't happen overnight. The NIH started talking about simplifying the review process back in 2022. But the shift toward more political control has moved quickly. In March 2025, the NIH announced the centralization plan. By August, the executive order introduced the political oversight piece. This compressed timeline is unusual. Normally, changes to how federal research money is distributed happen slowly, with lots of discussion among universities, researchers, and funding agencies.

What It Means for Scientists

These changes create real uncertainty for the research community. Universities and hospitals need to know what the NIH values. Principal investigators — the lead researchers on projects — are now unsure how political priorities will shape their chances of getting funded. Young scientists applying for fellowships are navigating new application processes in the middle of this shift.

On one hand, a simpler review process might be easier for scientists to understand and faster for reviewers to complete. On the other hand, introducing politics into what was supposed to be a merit-based system is a major departure from how federal science funding has worked since World War II.

The changes affect how research priorities get set and how money flows to institutions. The real test will come in the months ahead, when we see how this new system actually works in practice and whether it produces the results the NIH intended.