Glutamine did not change mood or cognition during brief simulated high-altitude exposure

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Study design

Researchers randomized young men aged 20–30 years to glutamine or placebo before six hours of exposure to simulated altitude equivalent to 4,500 m. The double-masked trial assessed mood and cognitive performance alongside physiological measures.

Findings

The paper’s title and reported conclusion state that hypoxia did not affect the measured psychobiological parameters and that this was unchanged by glutamine. The study therefore found no evidence that the supplement protected tested cognitive or mood outcomes in this short exposure.

Limits and disclosures

The sample was limited to young men and a brief laboratory exposure; results do not address longer stays at altitude, other groups or other uses of glutamine. This does not establish a general lack of effect for every setting.

This sourced news summary and translation were prepared with AI assistance. Source links, the news date and research limitations are disclosed; this is not a claim of independent medical expert review. News production method.

Sources

• Six hours of hypoxia at 4500 m does not affect psychobiological parameters, regardless of glutamine supplementation: A randomized, double-masked, placebo-controlled clinical trial — Nutrition and Health / SAGE · 25 August 2026

Research news is not medical advice or a recommendation to use a substance. Read findings in the context of the study design, participants and limitations. Editorial standards.

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