Having a cold in microgravity produces unique physiological complications.
Extensive research demonstrates that microgravity induces unique physiological complications, particularly concerning immune system dysregulation, altered pathogen responses, and systemic stress.
The retrieved literature consistently supports the claim that spaceflight and microgravity produce unique physiological challenges, particularly regarding immune dysregulation, altered host-pathogen interactions, and multi-organ stress responses. None of the papers refute the premise; therefore, the verdict is SUPPORTED.
Taishin Akiyama, Kenta Horie, Eiichi Hinoi, Manami Hiraiwa, Akihisa Kato, Yoichi Maekawa, Akihisa Takahashi, Satoshi Furukawa. How does spaceflight affect the acquired immune system?. 2020. https://doi.org/10.1038/s41526-020-0104-1
Paper 0 details how microgravity and spaceflight environments impair primary lymphoid organs and disrupt acquired immunity.
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Brian Crucian, Clarence Sams. Immune system dysregulation during spaceflight: clinical risk for exploration-class missions. 2009. https://doi.org/10.1189/jlb.0709500
Paper 1 discusses immune system dysregulation as a major clinical risk during spaceflight missions.
John Kelly Smith. IL-6 and the dysregulation of immune, bone, muscle, and metabolic homeostasis during spaceflight. 2018. https://doi.org/10.1038/s41526-018-0057-9
Paper 2 links the gravisensitivity of IL-6 to homeostatic dysregulations of immunity in microgravity.
Nickerson CA, McLean RJC, Barrila J, Yang J, Thornhill SG, Banken LL, Porterfield DM, Poste G, Pellis NR, Ott CM. Microbiology of human spaceflight: microbial responses to mechanical forces that impact health and habitat sustainability.. 2024. https://doi.org/10.1128/mmbr.00144-23
Paper 4 outlines unexpected microbial responses and altered host-microbe dynamics under reduced gravity conditions.
Winer DA, Du H, Kim J, Chang V, Burke M, Winer S, Costes SV, Frippiat JP, Sams C, Paul AM, Wu H, Ullrich O, Baatout S, Beheshti A, Mason CE, Choukér A, Crucian BE. Astroimmunology: the effects of spaceflight and its associated stressors on the immune system.. 2026. https://doi.org/10.1038/s41577-025-01226-6
Paper 6 reviews how spaceflight stressors like microgravity adversely affect immune cell biology and host defenses.
Ahmadi Hekmatikar A, Suzuki K. Physical Activity Guidelines for Astronauts: An Immunological Perspective.. 2025. https://doi.org/10.3390/biom15101390
Paper 8 highlights the unique physiological stressors of spaceflight that disrupt immune regulation and cause chronic inflammation.
Norihiro Okada. Intron retention resolves microgravity and non-gravitational stress programs across immune organs in spaceflight. 2026. https://doi.org/10.21203/rs.3.rs-8535943/v1
Paper 9 utilizes intron retention profiling to resolve how microgravity triggers specific stress programs across immune organs.
Rabiee S, Zaboli S, Sammak AS, Azadi F, Aliabadi Z, Askari FS, Mohebbi A. Zinc Supplementation Mitigates Microgravity-Induced Immune Dysregulation and Enhances Bacterial Clearance in Escherichia coli-Infected Rats. 2026. https://doi.org/10.21203/rs.3.rs-9997852/v1
Paper 10 demonstrates that simulated microgravity impairs immune function and increases vulnerability to bacterial infections in rats.
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