Ingredient
Caffeine
We have read Caffeine against 11 things that were measured, from eight sources. Our own to-read list holds 19 things for Caffeine, and eight of them are still to read.
This is a library, not advice. No recommendation, no dose, no diagnosis, no ranking. We never ask about your symptoms, and nothing here is tailored to you.
Everything read for Caffeine: 11 questions, by topic
Seven of 11 rest on a single source, with nothing here yet to check them against.
Energy and exercise
- Caffeine and Endurance Performance (Time to Exhaustion)One source, measured higherModerate certainty, level 3 of 4
- Caffeine and Muscular EnduranceOne source, measured higherLow certainty, level 2 of 4
Heart and blood pressure
- Caffeine and Diastolic blood pressureTwo sources, all measured higherLow certainty, level 2 of 4
- Caffeine and Systolic blood pressureTwo sources, all measured higherLow certainty, level 2 of 4
Mood, stress and thinking
- Caffeine and AnxietyOne source, measured higherModerate certainty, level 3 of 4
Sleep
- Caffeine and Deep (slow-wave) sleepOne source, measured lowerVery low certainty, level 1 of 4
- Caffeine and REM sleepOne source, found no clear differenceVery low certainty, level 1 of 4
- Caffeine and Sleep efficiencyTwo sources, all measured lowerModerate certainty, level 3 of 4
- Caffeine and Sleep onset latencyOne source, measured higherLow certainty, level 2 of 4
- Caffeine and Total sleep timeTwo sources, saying different thingsModerate certainty, level 3 of 4
- Caffeine and Wake after sleep onset (WASO)One source, measured higherLow certainty, level 2 of 4
Still to read for Caffeine
Our to-read list holds 19 things for Caffeine. Eight of them have no reading here yet:
- Cognitive performance
- Estimated VO2max
- Fatigue
- Heart rate variability (RMSSD)
- Light sleep
- Number of awakenings
- Resting heart rate
- Serum cortisol (morning)
Still to read means nobody here has got to it, not that it was tried and did nothing or that no research exists. A pairing on no list is not a gap: we never set out to read it.