Toronto, Canada – By Simon Evans
Greenwood County Coroner Jim Coursey said Adams, 26, was taken to the emergency room at Self Regional Hospital, where he was pronounced dead on Sunday morning.
Adams was experiencing 'health issues' and his girlfriend called for an ambulance, Coursey said.
Adams arrived at the hospital just after 0800 Eastern Time and was pronounced dead in the emergency room at 0821.
Coursey said results of a toxicology report probably will not available for 'a few months'.
Local media said Adams lived in Greenwood.
Adams played college football at Clemson University and was drafted by the Tampa Bay Buccaneers in the 2007 draft.
Adams was traded to the Chicago Bears in October last year and featured in 10 games for the team this season.
(Reporting by Simon Evans in Miami; editing by Miles Evans)