ATLANTA—Demaryius Thomas, who earned five straight Pro Bowl honors and a Super Bowl ring during a prolific receiving career spent mostly with the Denver Broncos, has died at the age of 33. Thomas was found dead in his suburban Atlanta home Thursday night, said Officer Tim Lupo, public information officer for the police department in Roswell, Georgia. “Preliminary information is that his death stems from a medical issue, and our investigators currently have no reason to believe otherwise,” Lupo said in a statement early Friday. LaTonya Bonseigneur, a first cousin who grew up with Thomas and was so close they considered themselves siblings, told The Associated Press the family believes he died from a seizure. Family members were notified by the Roswell police at about 9 p.m. EST that they had found Thomas in a shower at his home. “He had been suffering from seizures for over a year, and …