Sun Feb 23 09:06:43 UTC 2025: ## Space Travel’s Toll on the Human Body: New Research Highlights Growing Concerns

**New Delhi, February 23, 2025** – A growing body of research is highlighting the significant and potentially lasting health risks associated with space travel, particularly on long-duration missions. Experts warn that the human body, evolved for Earth’s environment, is ill-equipped to handle the unique challenges of space, including microgravity, high-energy radiation, and prolonged isolation.

Studies reviewed reveal a range of detrimental effects. Microgravity causes fluid shifts, leading to facial swelling, increased intracranial pressure (affecting vision), bone density loss, muscle atrophy, and cardiovascular issues. Exposure to cosmic radiation, significantly higher outside Earth’s protective magnetosphere, increases the risk of DNA damage, cancer, neurodegenerative diseases, and immune system dysfunction. Prolonged isolation in confined spaces contributes to psychological stress, sleep disturbances, and cognitive decline.

While short-duration missions show a near-complete reversal of many biological changes upon return to Earth, longer missions, such as those to the International Space Station (ISS) or future missions to Mars, pose a greater challenge. Conditions like Spaceflight-Associated Neuro-ocular Syndrome (SANS), causing vision impairment, may persist. Research also points to lasting bone density loss and a significant increase in the incidence of headaches among astronauts.

Dr. Afshin Beheshti, director of the Center for Space Biomedicine at the University of Pittsburgh, and Professor Chris Mason of Weill Cornell Medicine emphasize the need for more data on astronauts with diverse health backgrounds and mission profiles to develop personalized risk assessments and mitigation strategies. Crucially, a considerable knowledge gap remains regarding the impact of spaceflight on lung function, human reproduction, fetal development, and long-term cognitive and mental health effects. Further investigation into the role of mitochondria, cellular structures crucial for energy production, in space-induced damage is also underway.

The findings underscore the urgent need for effective countermeasures to protect astronauts’ health during extended space exploration, paving the way for safer and more sustainable human presence beyond Earth. Ongoing research promises advancements in mitigating these risks and ensuring the well-being of future space travelers.

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