Most common cause of sudden death-

the most common cause of sudden death in people is ventricular fibrillation Ventricular fibrillation is the most frequent cause of sudden cardiac death. The condition's rapid, erratic heabeats cause the hea to abruptly stop pumping blood to the body. The longer the body is deprived of blood, the greater the risk of damage to your brain and other organs. Death can occur within minutes. Ref Davidson 23rd edition pg 445