Caffeine-Related Deaths: Manner of Deaths and Categories at Risk

Simone Cappelletti, Daria Piacentino, Vittorio Fineschi, Paola Frati, Luigi Cipolloni, Mariarosaria Aromatario, Simone Cappelletti, Daria Piacentino, Vittorio Fineschi, Paola Frati, Luigi Cipolloni, Mariarosaria Aromatario

Abstract

Caffeine is the most widely consumed psychoactive compound worldwide. It is mostly found in coffee, tea, energizing drinks and in some drugs. However, it has become really easy to obtain pure caffeine (powder or tablets) on the Internet markets. Mechanisms of action are dose-dependent. Serious toxicities such as seizure and cardiac arrhythmias, seen with caffeine plasma concentrations of 15 mg/L or higher, have caused poisoning or, rarely, death; otherwise concentrations of 3⁻6 mg/kg are considered safe. Caffeine concentrations of 80⁻100 mg/L are considered lethal. The aim of this systematic review, performed following the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) statement for the identification and selection of studies, is to review fatal cases in which caffeine has been recognized as the only cause of death in order to identify potential categories at risk. A total of 92 cases have been identified. These events happened more frequently in infants, psychiatric patients, and athletes. Although caffeine intoxication is relatively uncommon, raising awareness about its lethal consequences could be useful for both clinicians and pathologists to identify possible unrecognized cases and prevent related severe health conditions and deaths.

Keywords: Suicide; accidental death; caffeine; caffeine intoxication; intoxication.

Conflict of interest statement

The authors declare no conflict of interest.

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