Former NHL Predator Wade Belak Found Dead. How did he Die? Suicide?

Former Predator Wade Belak was found dead in his home. How did Wade Belak die?
He was known for being a tough guy type of player. In the old days, maybe he would be considered a goon. He has had several concussions in his playing career and speculation may be that this contributed to his death somehow. Is it similar to the Dave Duerson, Rick Rypien, or Derek Boogaard's death? Was it suicide? Brain tissue may be analyzed to see if there was any trauma or damage.

Were drugs involved? What caused Wade Belak's death will be determined in the next few days. How old was he?