Cause of death of Clark Haggans: What did the 46-year-old former Steelers linebacker die of?

The NFL world is mourning the loss of the former star.
Former Pittsburgh Steelers NFL player Clark Haggans has died at the age of 46, shocking American football.
A Pittsburgh sports radio host broke the news Tuesday night, confirming that the Super Bowl XL winner had died.
Haggans was an NFL player for 13 seasons, eight of which came with the Steelers from 2000-2007. He won the Super Bowl in 2005. The Steelers won that game 21-10, and he amassed a career-high nine sacks during the campaign.
Haggans’ cause of death is unknown

The cause of Haggans’ death has not yet been released, but the statement said there were “no signs of foul play.”
Haggans other clubs included the Arizona Cardinals and the San Francisco 49ers. He went to the Super Bowl again with the 49ers and was part of the team that won the NFC title in 2012. His draft of the Steelers in 2000 had a particularly nice element to it, because they drafted his college teammate and friend Joey Porter the year before.
“I was happy to be included and open arms to go see Joey. They should have played that Reunited song,” Haggans told Steelersnow.com in 2019.
Reflecting on his first NFL game, Haggans said, “I was surprised to see Troy Aikman. I used him on my Techno-Bowl team,” Haggans said. “Randall Cunningham was in their team then and when they snapped the ball I didn’t move. It all happened so fast – I was just standing there in my lap.
“Before the pros, my coach told me — that baller — go get him and don’t let him score. If we had more points than the other team, I was happy,” Haggans said. “Now I had to learn about uneven lines, big packs, fouls and two-minute attacks. It was just crazy. It wasn’t just about getting the ball to the man anymore.”