Review of NASA's Evidence Reports on Human Health Risks: 2017 Letter Report

NASA asked the National Academies of Sciences, Engineering, and Medicine to review more than 30 publicly available evidence reports on human health risks for long-duration and exploration space flight.  A new letter report -- the fifth and final in the series -- examines five NASA evidence reports on astronauts’ risk of bone fracture due to spaceflight-induced changes to bone, early onset osteoporosis due to spaceflight, cardiac rhythm problems during spaceflight, renal stone formation, and adverse health outcomes and decrements in performance due to in-flight medical conditions.

This report examines the quality of evidence, analysis, and overall construction of each NASA evidence report, identifies gaps in content, and provides suggestions for additional sources of expert input.  The NASA evidence reports are available here.

Advance copies of Review of NASA’s Evidence Reports on Human Health Risks: 2017 Letter Report will be available to reporters only beginning at noon EST on Tuesday, Jan. 9.  The report is embargoed and not for public release before 1 p.m. EST Wednesday, Jan. 10.  To obtain an embargoed copy, reporters should contact the National Academies' Office of News and Public Information; tel. 202-334-2138 or e-mail