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[Altitude hypoxia: effects on selected endocrinological parameters].

H P Dimai1, S Ramschak-Schwarzer, G Leb

  • 1Klinischen Abteilung für Endokrinologie und Nuklearmedizin, Medizinischen Universitätsklinik Graz. hans.dimai@kfunigraz.ac.at

Wiener Medizinische Wochenschrift (1946)
|August 29, 2000
PubMed
Summary

Altitude hypoxia affects human metabolic functions, increasing hormones like erythropoietin, noradrenaline, cortisol, and thyroid hormones. Pro-inflammatory cytokine interleukin-6 also rises significantly.

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Area of Science:

  • Endocrinology
  • Human Physiology

Background:

  • Altitude hypoxia research is growing, with endocrinologists focusing on its metabolic effects.
  • Previous field studies yielded conflicting results due to challenges in standardizing conditions and quantifying environmental factors.

Purpose of the Study:

  • To review the effects of altitude hypoxia on human endocrine parameters.
  • To identify key hormones and cytokines altered by exposure to reduced oxygen levels.

Main Methods:

  • Review of existing literature on altitude hypoxia and endocrine function.
  • Analysis of studies reporting changes in hormone levels and cytokine concentrations.

Main Results:

  • Significant increases observed in erythropoietin, noradrenaline, cortisol, and thyroid hormones (thyroxine, triiodothyronine).

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  • Interleukin-6, a pro-inflammatory cytokine, shows a marked increase.
  • Adrenaline levels appear less affected compared to noradrenaline.

    • Conclusions:

    • Altitude hypoxia demonstrably impacts multiple endocrine parameters.
    • The clinical significance of these hormonal changes requires further investigation.
    • Currently, no specific endocrinological recommendations can be made for individuals at moderate or high altitudes.