As stated by Guerrero's wife, Vickie Guerrero last month, Eddie died
of natural causes related to heart disease, said the Hennepin County
Medical Examiner
The medical examiner's office said Guerrero, who was found dead in his
hotel room on November 13, died of "natural causes related to
arteriosclerotic heart disease." The report says he had a hardening and
narrowing of the arteries that supply the heart with blood and oxygen.
The coroner's did not address what led to the heart trouble, although
the wrestler's wife, Vickie Guerrero, said last month on WWE.com's
website that his past substance abuse, the use of steroids and
aggressive workout regimen were major contributors to his heart failure.
Following Guerrero's death, WWE announced the institution of a drug
testing policy to screen for steroids and other drugs.