Curated by
More in Caffeine Dosing and Safe Daily Intake Guides
See all 3 →Spilling the Beans: How Much Caffeine is Too Much?
fda.gov
Caffeine: How much is too much? - Mayo Clinic
mayoclinic.org
More from Light Speed
See all stacks →LSC100 In The Wild: LSC100 + Press
1 card
What's In The Box: LSC100 + Product Breakdown
5 cards
Caffeine + L-Theanine, Decoded: LSC100 + Nootropic Science
4 cards
Coffee and heart health: How many cups are safe?
The American Heart Association published a scientific statement concluding that consuming up to 400 mg of caffeine per day (about 5 cups of coffee) is generally safe for most adults and may lower the risk of several cardiovascular conditions. However, higher caffeine doses found in energy drinks may increase the risk of high blood pressure and arrhythmia, and more research is needed on caffeine's varying effects.
Built for AI agentsACO · 3607 tokens
Summary
The American Heart Association published a scientific statement concluding that consuming up to 400 mg of caffeine per day (about 5 cups of coffee) is generally safe for most adults and may lower the risk of several cardiovascular conditions. However, higher caffeine doses found in energy drinks may increase the risk of high blood pressure and arrhythmia, and more research is needed on caffeine's varying effects.
Tags
caffeine · cardiovascular-health · coffee · heart-disease · american-heart-association · scientific-statement · energy-drinks
Key entities
American Heart Association (organization, 0.99) · Gregory M. Marcus (person, 0.97) · University of California, San Francisco (organization, 0.95) · Caffeine and Cardiovascular Disease (concept, 0.95) · cardiovascular health (concept, 0.93) · Circulation (technology, 0.88) · Dallas (location, 0.85) · energy drinks (concept, 0.85)
Classification
reference · language en · status final
Provenance
claude-opus-4-6 via @stacklist/mcp-server@2.0.0, confidence 0.85, 30 Aug 2026