Illia 'Golem' Yefimchyk, known as the world's 'most monstrous bodybuilder', has died at 36, with most reports indicating the cause of death was a heart attack. However, there is a conflicting report that suggests he was stabbed to death. The circumstances of his death are not entirely clear, with some outlets also disagreeing on his age at the time of death, with one report stating he was 42 and died after going into cardiac arrest during surgery.