Kodali, Maheedhar, Mishra, Vikas, Hattiangady, Bharathi et al. · Brain, behavior, and immunity · 2021 · DOI
Researchers tested whether moderate exercise three times a week could help rats with a Gulf War Illness-like condition improve their memory, mood, and thinking skills. After 13 weeks, the exercising rats showed better memory and less anxiety, and their brains showed less inflammation and more growth of new brain cells. This suggests that gentle, part-time exercise might help people with similar conditions improve brain function.
This study is relevant to ME/CFS because both conditions feature persistent cognitive impairment, mood disturbance, and chronic neuroinflammation. The finding that intermittent, moderate exercise reduced brain inflammation and improved cognition in an illness model suggests a potential non-pharmaceutical approach, though the critical post-exertional malaise phenomenon requires careful study in human populations.
This rat study does not prove that the same exercise regimen will work safely or effectively in people with ME/CFS or GWI, especially those with significant post-exertional malaise. Animal models may not fully replicate human disease complexity, and the study does not establish that reduced neuroinflammation is the mechanism causing cognitive improvement rather than a correlation.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Kodali, Maheedhar, Mishra, Vikas, Hattiangady, Bharathi, Attaluri, Sahithi, Gonzalez, Jenny Jaimes, Shuai, Bing, et al. (2021). Moderate, intermittent voluntary exercise in a model of Gulf War Illness improves cognitive and mood function with alleviation of activated microglia and astrocytes, and enhanced neurogenesis in the hippocampus.. Brain, behavior, and immunity. https://doi.org/10.1016/j.bbi.2021.07.005
BibTeX
@article{mecfsatlas-kodali-2021-moderate-intermittent,
author = {Kodali, Maheedhar and Mishra, Vikas and Hattiangady, Bharathi and Attaluri, Sahithi and Gonzalez, Jenny Jaimes and Shuai, Bing and Shetty, Ashok K},
title = {Moderate, intermittent voluntary exercise in a model of Gulf War Illness improves cognitive and mood function with alleviation of activated microglia and astrocytes, and enhanced neurogenesis in the hippocampus.},
journal = {Brain, behavior, and immunity},
year = {2021},
doi = {10.1016/j.bbi.2021.07.005},
note = {PubMed: 34245811},
url = {https://www.mecfsatlas.com/evidence/kodali-2021-moderate-intermittent},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-29. https://www.mecfsatlas.com/evidence/kodali-2021-moderate-intermittent
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