Human System Risks
Select a Human System Risk to learn more.
Article
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Concern of Venous Thromboembolism
![](https://www.nasa.gov/wp-content/uploads/2023/03/vte-concern.jpeg?w=1024)
Article
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Risk of Acute and Chronic Carbon Dioxide Exposure
![](https://www.nasa.gov/wp-content/uploads/2023/03/carbon-dioxide.jpeg?w=1024)
Article
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Risk of Adverse Cognitive or Behavioral Conditions and Psychiatric Disorders
![](https://www.nasa.gov/wp-content/uploads/2023/03/behavorial.jpeg?w=1024)
Article
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Risk of Adverse Health Effects Due to Host-Microorganism Interactions
![](https://www.nasa.gov/wp-content/uploads/2023/03/host-microorganism.jpeg?w=1024)
Article
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Risk of Adverse Health Outcomes and Decrements in Performance due to Inflight Medical Conditions
![](https://www.nasa.gov/wp-content/uploads/2023/03/medical-conditions.jpeg?w=1024)
Article
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Risk of Adverse Health Outcomes and Performance Decrements resulting from Non-Ionizing Radiation during Spaceflight
![](https://www.nasa.gov/wp-content/uploads/2023/03/non-ionizing-radiation.jpeg?w=1024)
Article
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Risk of Adverse In-Mission Health and Performance Effects and Long-Term Health Effects Due to Celestial Dust Exposure (Dust Risk)
![](https://www.nasa.gov/wp-content/uploads/2023/03/celestial-dust.jpeg?w=1024)
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Risk of Adverse Mission Outcomes Due to Earth Independent Human-Systems Operations (EIHSO Risk)
![](https://www.nasa.gov/wp-content/uploads/2023/03/hsia.jpeg?w=1024)
Article
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Risk of Bone Fracture due to Spaceflight-induced Changes to Bone
![](https://www.nasa.gov/wp-content/uploads/2023/03/bone-fracture-risk.jpeg?w=1024)
Article
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Risk of Cardiovascular Adaptations Contributing to Adverse Mission Performance and Health Outcomes (CV Risk)
![](https://www.nasa.gov/wp-content/uploads/2023/03/cardiovascular-1.jpeg?w=1024)
Article
1 min read
Risk of Hearing Loss and Performance Decrements Due to Acoustics Issues in Space
![](https://www.nasa.gov/wp-content/uploads/2023/03/hearing-loss.jpeg?w=1024)
Article
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Risk of Impaired Control of Spacecraft/ Associated Systems and Decreased Mobility Due to Vestibular/ Sensorimotor Alterations Associated with Space Flight
![](https://www.nasa.gov/wp-content/uploads/2023/03/sensorimotor.jpeg?w=1024)
Article
1 min read
Risk of In Mission Impacts, Adverse Health Events or Long-Term Health Impacts due to Altered Immune Response (Immune Risk)
![](https://www.nasa.gov/wp-content/uploads/2023/03/immune-system.jpeg?w=1024)
Article
1 min read
Risk of In-Mission Injury and Performance Decrements and Long-term Health Effects due to Dynamic Loads (Dynamic Loads Risk)
![](https://www.nasa.gov/wp-content/uploads/2023/03/dynamic-loads.jpeg?w=1024)
Article
1 min read
Risk of Ineffective or Toxic Medications During Long-Duration Exploration Spaceflight
![](https://www.nasa.gov/wp-content/uploads/2023/03/pharm-risk.jpeg?w=1024)
Article
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Risk of Mission Impacting Injury and Compromised Performance and Long-Term Health Effects due to EVA Operations (EVA Risk)
![](https://www.nasa.gov/wp-content/uploads/2023/03/eva-risk.jpeg?w=1024)
Article
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Risk of Mission Impacts and Long-Term Health Issues due to Decompression Sickness
![](https://www.nasa.gov/wp-content/uploads/2023/03/decompression-sickness.jpeg?w=1024)
Article
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Risk of Performance and Behavioral Health Decrements Due to Inadequate Cooperation, Coordination, Communication, and Psychosocial Adaptation within a Team
![](https://www.nasa.gov/wp-content/uploads/2023/03/team-risks.jpeg?w=1024)
Article
1 min read
Risk of Performance Decrement and Crew Illness Due to Inadequate Food and Nutrition
![](https://www.nasa.gov/wp-content/uploads/2023/03/foodandnutrition.jpeg?w=1024)
Article
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Risk of Performance Decrements and Adverse Health Outcomes Resulting from Sleep Loss, Circadian Desynchronization, and Work Overload
![](https://www.nasa.gov/wp-content/uploads/2023/03/sleep-risk.jpeg?w=1024)
Article
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Risk of Radiation Carcinogenesis
![](https://www.nasa.gov/wp-content/uploads/2023/03/carcinogenesis.jpeg?w=1024)
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Risk of Reduced Crew Health and Performance Due to Hypoxia
![](https://www.nasa.gov/wp-content/uploads/2023/03/hypoxia-risk.jpeg?w=1024)
Article
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Risk of Reduced Physical Performance Capabilities Due to Reduced Aerobic Capacity (Aerobic Risk)
![](https://www.nasa.gov/wp-content/uploads/2023/03/aerobic-capacity-1.jpeg?w=1024)
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Risk of Reduced Physical Performance Capabilities Due to Reduced Muscle Size, Strength, and Endurance (Muscle Risk)
![](https://www.nasa.gov/wp-content/uploads/2023/03/reduced-muscle-size.jpeg?w=1024)
Article
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Risk of Renal Stone Formation
![](https://www.nasa.gov/wp-content/uploads/2023/03/renal-stone-formation.jpeg?w=1024)
Article
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Risk of Spaceflight Associated Neuro-ocular Syndrome
![](https://www.nasa.gov/wp-content/uploads/2023/03/sans-risk-0.jpeg?w=1024)
Article
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Risk of Toxic Substance Exposure
![](https://www.nasa.gov/wp-content/uploads/2023/03/toxic-exposure.jpeg?w=1024)
Article
1 min read
Risk of Urinary Retention
![](https://www.nasa.gov/wp-content/uploads/2023/03/urinary-retention.jpeg?w=1024)
Article
1 min read
Risk to Crew Health Due to Electrical Shock (Electrical Shock Risk)
![](https://www.nasa.gov/wp-content/uploads/2023/03/electrical-shock.jpeg?w=1024)
Article
1 min read
Risk to Vehicle Crew Egress Capability and Task Performance as Applied to Earth and Extraterrestrial Landings
![](https://www.nasa.gov/wp-content/uploads/2023/03/crew-egress-risk.jpeg?w=1024)