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Human Health Countermeasures

The Human Health Countermeasures (HHC) element of NASA’s Human Research Program (HRP) seeks to understand the physiological effects of spaceflight and develop strategies to mitigate those with detrimental effects on human health and performance.

NASA astronaut Anne McClain exercises in the Node 3 module.

Learn More About HHC

human health countermeasures

About HHC

HHC provides biomedical expertise for the development and assessment of medical standards, vehicle and spacesuit requirements, and strategies that ensure crew health during all phases of flight.

NASA astronaut Drew Feustel pictured during a spacewalk

Spaceflight Risks

See the risks of human spaceflight that the HHC element is tackling to help ensure the health and safety of astronauts in low-Earth orbit and beyond.

Meet the Team

Meet the team behind HHC, including element managers and scientists who help facilitate the research aboard the International Space Station and in simulations on Earth.

NASA astronaut Jasmin Moghbeli services microbe samples for DNA sequencing aboard the International Space Station.

Collaborate With Us

Find different ways to collaborate with NASA's HRP and help us discover how to keep the next generation of space explorers thriving on future missions to the Moon, Mars, and beyond.

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NASA Harnesses US Navy Spinning Device to Simulate Spaceflight

A monster of a machine is now allowing NASA scientists to study on Earth the disorientation that astronauts may encounter…

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Space Nutrition

Astronauts require food that is nutritious, appetizing, long-lasting, easy to make, and more. We strive to continuously improve the quality of space food and to satisfy the dietary needs of crew members on increasingly longer and more distant spaceflight missions.

Scientists are working hard to better understand why vision changes occur for some astronauts in microgravity, while continuously developing strategies to counter those changes.

Focusing on Crew Health

From studies that examine bone and muscle loss in space to attempts to characterize the microbial environment of the International Space Station, NASA scientists are examining how to best ensure crew health and safety.

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The Human Body in Space

For more than 50 years, NASA’s Human Research Program (HRP) has studied what happens to the human body in space. Researchers…

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