CIRCADIAN RHYTHMS. Caffeine, the circadian clock, and sleep.

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

Who cites it

9 citing papers in PubMed.

1. Subacute Ingestion of Caffeine and Oolong Tea Increases Fat Oxidation without Affecting Energy Expenditure and Sleep Architecture: A Randomized, Placebo-Controlled, Double-Blinded Cross-Over Trial.Nutrients · 2020
   Trial
2. A Chrono-Metabolic Approach to Mental Health: Current Perspectives on Circadian Rhythms, Gut Microbiota, and Microbial Metabolites in Mood Disorders.Metabolites · 2026
   Review
3. A newly developed circadian imbalance index (CII) and risk of cardiovascular-kidney-metabolic disease in the UK biobank.European journal of epidemiology · 2026
   Article
4. Genome wide association study of a Circadian Imbalance Index in 312,935 European ancestry UK Biobank participants identifies loci related to diabetes, mood and myocardial infarction.Research square · 2025
   Article
5. Antagonistic interaction between caffeine and ketamine in zebrafish: Implications for aquatic toxicity.Environmental science and ecotechnology · 2024
   Article
6. Circadian neurogenetics and its implications in neurophysiology, behavior, and chronomedicine.Neuroscience and biobehavioral reviews · 2024
   Review
7. High Gamma-Aminobutyric Acid (GABA) Oolong Tea Alleviates High-Fat Diet-Induced Metabolic Disorders in Mice.ACS omega · 2023
   Article
8. Precision caffeine therapy for apnea of prematurity and circadian rhythms: New possibilities open up.Frontiers in pharmacology · 2022
   Review
9. Finger sweat analysis enables short interval metabolic biomonitoring in humans.Nature communications · 2021
   Article

Corrections and comments

• Comment on
  Effects of caffeine on the human circadian clock in vivo and in vitro.2015

Authors and funding

1 author.

Funding

No grant is acknowledged in the PubMed record.

Abstract

PubMed holds no abstract for this paper.

Indexed as