Quiz · 7 questions
Why caffeine matters
If your heart races or pounds after caffeine, talk to a clinician.
Why it matters
Coffee and tea drinkers tend to live longer: in about 400,000 adults, two to five cups of coffee a day went with roughly 10 to 15% lower mortality [1], and two or more cups of black tea with 9 to 13% lower [2]. The catch is timing: caffeine taken six hours before bed still cut sleep by more than an hour [3].
Sources
- [1]Freedman et al., N Engl J Med 2012 Evidence: Low
- [2]Inoue-Choi et al., Ann Intern Med 2022 Evidence: Low
- [3]Drake et al., J Clin Sleep Med 2013 Evidence: Low
Your answers here also place you on
What MattersWhat raises dementia risk mostLearn more about all the dementia factors →What MattersWhat sleep does to how long you liveLearn more about all the sleep and lifespan factors →What MattersWhat actually moves sleep qualityLearn more about all the sleep quality factors →What MattersWhat moves your cognitive ageLearn more about all the cognitive age factors →What MattersFoods ranked for longevityLearn more about every food, better to worse →What MattersThe healthiest habits, rankedLearn more about every habit, ranked by Health Score points →