A Kyushu man in his 20s died last year from caffeine intoxication after drinking large quantities of caffeinated beverages daily over a long period to fight fatigue, researchers at Fukuoka University said.
Although something, possibly part of a caffeine pill, was extracted from his stomach, his death was most likely caused by consuming too many caffeinated drinks, according to the university’s forensic medicine faculty.
Japanese man dies after daily heavy consumption of caffeinated beverages | The Japan Times