--- title: "NASA: Space Travel Is Causing Astronauts’ Herpes to Flare Up" description: "## Dormant Viruses" date: "2019-03-16" modified: "2019-03-16" authors: - name: "Jon Christian" job_title: "Executive Editor" link: "https://futurism.com/authors/jonc" url: "https://futurism.com/nasa-space-travel-herpes" categories: - "NASA" - "Space" tags: - "health" - "herpes" - "NASA" - "space" --- # NASA: Space Travel Is Causing Astronauts’ Herpes to Flare Up ![Tests show that dormant herpes viruses reactivate in more than half the astronauts who travel on the Space Shuttle and International Space station.]() *\Image: Pexels\* ## Dormant Viruses Tests show that dormant herpes viruses reactivate in more than half the astronauts who travel on the Space Shuttle and International Space station, according to new NASA research — a phenomenon the space agency says could pose problems for deep space missions. "During spaceflight there is a rise in secretion of stress hormones like cortisol and adrenaline, which are known to suppress the immune system, " said study author Satish Mehta, a researcher at Johnson Space Center, in a [press release](). "In keeping with this, we find that astronaut's immune cells — particularly those that normally suppress and eliminate viruses — become less effective during spaceflight and sometimes for up to 60 days after." ## Less Effective In research [published last month]() in the journal *Frontiers in Microbiology*, Mehta and colleagues found that astronauts shed more herpes viruses in their urine and saliva than before or after space travel. The culprit, they suspect, is just the stress of spaceflight. "NASA astronauts endure weeks or even months exposed to microgravity and cosmic radiation — not to mention the extreme G forces of take-off and re-entry," Mehta said in the press release. "This physical challenge is compounded by more familiar stressors like social separation, confinement and an altered sleep-wake cycle." ## Minor Symptoms Fortunately, symptoms were relatively rare. Out of 89 astronauts the team studied, only six experienced herpes breakouts in space, according to the paper — a rate of about seven percent. The viral shedding also got worse the longer the astronauts were off Earth, leading researchers to worry the phenomenon could represent a challenge for deep space travel. "While only a small proportion develop symptoms, virus reactivation rates increase with spaceflight duration and could present a significant health risk on missions to Mars and beyond," reads the press release. **READ MORE:** [Dormant viruses activate during spaceflight]() \[*Phys.org*\] **More on herpes:** *[Immune Cells Working Together To Kill Herpes Virus Captured on Video]()* ## Author I'm responsible for editing, assigning, and scouting at Futurism, as well as occasionally writing for the site. That work involves keeping an eye on a wide range of narratives and issues, but over the past few years I've become increasingly interested in how AI is shaping the future of media, the web, and information itself. My day-to-day often involves collaborating on reporting and commentary projects bylined by my colleagues, but I try to find time to do my own reporting as well; stories I've broken for Futurism have been cited by publications including the New York Times, the Washington Post, the New Yorker, Wired, Ars Technica, New York Magazine, the Columbia Journalism Review, Bloomberg, and more. I grew up in Southern Vermont and attended Vanderbilt University. Prior to Futurism, I contributed to outlets including the Boston Globe, Vice, Wired, Slate, the Atlantic, the Outline, Ars Technica and more, and did stints in farming and food service. I currently live in Brooklyn, New York, and in my free time I enjoy pinball, word games, cycling, running, and music production. ### Author social links [Bluesky]()