The Study
Coffee intake may promote sudomotor function activation via the contribution of caffeine
This study showed that when people drank coffee, they started sweating a bit faster and more than when they drank water. But we don’t know for sure if it was the caffeine or something else in coffee that made this happen. So we can say coffee is linked to more sweating, but not that it definitely causes it.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
This study tested if drinking a big cup of coffee makes your body start sweating faster and more, even when you're not hot or exercising.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 555 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1This means coffee could help your body cool down more efficiently by making your sweat system work harder — like turning up the fan on your body’s AC.
- 2After drinking coffee with 225 mg caffeine, people started sweating 14% faster and produced 15–30% more sweat during tests.
- 3Their sweat glands activated more often and each gland released 20% more sweat.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Frontiers in Nutrition
Year
2022
Authors
R. Kwon, J. Park, Harriet Lee, Jong-In Park, Eonah Choo, Seung-Jea Lee, Jeong-Beom Lee
Related Content
Claims (6)
High levels of caffeine maintain continuous activity in the body's fight-or-flight system and reduce activity in the rest-and-digest system.
Coffee consumption leads to a higher sweat rate when sweat glands are activated directly through muscarinic receptors than when activated through nerve reflexes, showing that caffeine affects sweat glands more than the nerves that trigger them.
In healthy young males, drinking coffee increases the number of sweat glands that activate and the amount of sweat each gland produces during cholinergic stimulation.
Drinking coffee does not change ear or core body temperature during an 11-minute sweat test.
Drinking coffee increases the amount of heat the body releases during sweat gland activation by about 5.5 kilocalories per minute.
Drinking 16 fluid ounces of coffee with 225 mg of caffeine reduces the time it takes to start sweating and increases the amount of sweat produced during heat-induced sweating responses in healthy young adult males.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.