Office of the Chief Health and Medical Officer (OCHMO) News & Articles See All News Article3 Min ReadHydrogen Sulfide Independent AssessmentArticle6 Min ReadAssessment of PFO as Related to DCS in the Spaceflight Environment and During Ground TestingArticle1 Min ReadAerospace Medical Certification StandardArticle1 Min ReadChief Health and Medical Officer’s Spaceflight Mishap Investigation Flight Surgeon Handbook Keep Exploring Discover More Topics From NASA February 2025 Wildfires and Climate Change Amendment 111: F.5 FINESST SMD’s Graduate Student Research opportunity: Updated Text and Charts and Reviewers Sought The Moon’s Atmosphere