Asthenia—Does It Exist in Space?

@article{Kanas2001AstheniaDoesIE,
  title={Asthenia—Does It Exist in Space?},
  author={Nick Kanas and Vyacheslav P Salnitskiy and Vadim I Gushin and Daniel S. Weiss and Ellen M. Grund and Christopher F. Flynn and O. P. Kozerenko and Alexander Sled and Charles R Marmar},
  journal={Psychosomatic Medicine},
  year={2001},
  volume={63},
  pages={874-880}
}
Objective First popularized as neurasthenia in the late 1800s by American George Beard, asthenia has been viewed by Russian psychologists and flight surgeons as a major problem that affects cosmonauts participating in long-duration space missions. However, there is some controversy about whether this syndrome exists in space; this controversy is attributable in part to the fact that it is not recognized in the current American psychiatric diagnostic system. Methods To address this issue… 
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