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the claim

Caffeine reduces fatigue by blocking adenosine receptors in the brain rather than by supplying calories.

the verdict
INSUFFICIENT LEANING
Recorded sources
6 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that caffeine reduces fatigue by blocking adenosine receptors in the brain rather than by supplying calories?

Unclear. Several sources state that caffeine acts as an adenosine receptor antagonist in the brain, and one rat study suggests this CNS blockade can delay fatigue. None of the placed items addresses the claim's contrast with calorie supply, and the fatigue-specific support comes only from animal work.

Verdict: PARTIAL LEAN · 6 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 6
Role of Caffeine in Inducing Anxiety by Reducing Brain Serotonin Synthesis Blocking Adenosine Receptors (A1, A2A, A2B, and A3)
2022
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Anwar, S., Verma, P., & Dutt, R. (2022). Role of Caffeine in Inducing Anxiety by Reducing Brain Serotonin Synthesis Blocking Adenosine Receptors (A1, A2A, A2B, and A3). doi.org. https://doi.org/10.2174/2215083808666220321145436

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More for · 5
Adenosine, caffeine, and sleep–wake regulation: state of the science and perspectives -
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Adenosine, caffeine, and sleep–wake regulation: state of the science and perspectives - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1111/jsr.13597

Central nervous system effects of caffeine and adenosine on fatigue
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Central nervous system effects of caffeine and adenosine on fatigue. (n.d.). cir.nii.ac.jp. https://doi.org/10.1152/ajpregu.00386.2002

Caffeine: Friend Or Foe in Human Health?
2024
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Madhanprasath, E. E. P. S. Y. A. J. J. M. S. K. P. K. D. S. H. G. (2024). Caffeine: Friend Or Foe in Human Health?. zenodo.org. https://doi.org/10.5281/zenodo.14464462

Caffeine Analogs: Structure-Activity Relationships at Adenosine Receptors
1991
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W., D. J., Izumi, H., & E., M. C. (1991). Caffeine Analogs: Structure-Activity Relationships at Adenosine Receptors. zenodo.org. https://doi.org/10.1159/000138813

Caffeine analogs: biomedical impact
2007
Get citation
W., D. J. (2007). Caffeine analogs: biomedical impact. zenodo.org. https://doi.org/10.1007/s00018-007-7051-9

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