THE SYSTEM IN THE UNITED STATES FOR PROTECTING HUMAN PARTICIPANTS IN RESEARCHengages the earnest efforts of thousands of scientists, community volunteers, and administrators. Through untold hours of service on Institutional Review Boards (IRBs), they watch over the safety of human research subjects. Unfortunately, much of that effort is increasingly misdirected as the system succumbs to "mission creep" that could compromise its central goals. Our IRB system is endangered by excessive paperwork and expanding obligations to oversee work that poses little risk to subjects. The result is that we have simultaneous overregulation and underprotection.IRBs were established after the 1979 Belmont Report from the Department of Health, Education, and Welfare, with the goal of protecting human subjects involved in potentially risky medical and behavioral research. But IRBs' burdens have grown to include studies involving interviews, journalism, secondary use of public-use data, and similar activities that others conduct regularly without oversight. Most of these activities involve minimal risks-surely less than those faced during a standard physical or psychological examination, the metric for everyday risk in the federal regulations. And IRBs are pressured to review an expanding range of issues from research design and conflicts of interest to patient privacy. These are beyond the scope of research protection and are best left to others.The IRB system is being overwhelmed by a focus on procedures and documentation at the expense of thoughtful consideration of the difficult ethical questions surrounding the welfare of human subjects, especially as complex clinical trials burgeon. Their work is afflicted by unclear definitions of terms such as "risk," "harm," and "research." Because ethical behavior is difficult to measure, many IRBs rely on stylized documentation over substantive review, out of concern that one case in a thousand could slip through and generate bad publicity or penalties, or potentially shut down research. The result is that many protocols receive exaggerated review, and the paper piles up. Society loses as potentially productive research is discouraged or self-censored.Ironically, this obsession with paperwork and mechanical monitoring may undermine protection of human subjects. IRB members spend too much time editing documents, marking typos, and asking for more details. One researcher, 10 years into a longitudinal study, was asked by an IRB to remove the term "anemia" from consent forms because participants might not understand it. Such actions, about which we hear frequently, carry a serious risk: They reduce trust in the guidance of IRBs and may alienate some researchers enough to turn them into scofflaws.Oversight of the IRB process by federal agencies reinforces these tendencies. "Poor or missing 'Standard Operating Procedures'" and "poor minute-keeping" account for about half of all U.S. Food and Drug Administration citations, and quorum failures for another 13%, according to one review. In seeking ...