NASHVILLE, TN - SEPTEMBER 18: Orlando Brown #77 of the Baltimore Ravens stands on the field during the game with the Tennessee Titans at the Coliseum on September 18, 2005 in Nashville, Tennessee. The Titans won 25-10. (Photo by Doug Pensinger/Getty Images)Doug Pensinger/Getty Images

The condition is rarely fatal, but Maryland's chief medical examiner David Fowler said that there were no signs that Brown was undergoing treatment for diabetes and that the disease may have been undiagnosed at the time of his death.

Many of Brown's former teammates were shocked both by his death and by the revelation that diabetes was the cause, particularly former offensive lineman Wally Williams, who played for both the Browns and Ravens as Brown did.

"He never talked about having diabetes, never," Williams said.

"For someone who is undiagnosed, they may not know they have diabetes," Kalyani said. "The symptoms may occur gradually, and people may not recognize them."

The 6'7", 360-pound tackle known as "Zeus" enjoyed a fruitful 10-year NFL career, but he is probably best known for an incident that occurred in 1999 as a member of the Browns. During a game, referee Jeff Triplette threw a flag that accidentally hit Brown in the eye.

This prompted Brown to shove Triplette to the ground, and he was suspended as a result. Brown missed three seasons due to a resulting eye injury, but he settled with the NFL for $25 million in damages.

As shocking as that particular incident was, the circumstances surrounding his death may be even more surprising. It will be interesting to see whether the NFL institutes an early detection program for diabetes and related diseases on the heels of this tragic death.

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