Abuse of caffeine can lead to organ damage over time

Majority view

Evaluating the underlying claim: Abuse of caffeine can lead to organ damage over time. The evidence supports that heavy or toxic caffeine use can cause acute injury to organs such as the heart, kidneys, brain, and muscles, and some reviews note potential chronic harms from repeated high intake. However, the strongest medical source here says typical caffeine use is not linked to long-term adverse outcomes and that caffeine itself has not been linked to clinically apparent liver injury, so the claim is only partially supported and depends on how 'abuse' and 'organ damage' are interpreted.

Credible dissent

Authoritative medical sources disagree on scope: NIH LiverTox says typical caffeine is not associated with long-term adverse outcomes and is unlikely to cause liver injury, while overdose references and reviews describe kidney, heart, brain, and muscle damage mainly in toxicity or very high-dose settings. This makes the broad wording of the claim materially contested rather than cleanly established.