This doesn't sound good, especially to his family & friends. Fellow bitcointalk community, I also express my condolences to the user above even though I have never interacted directly or even quoted one of his posts. Based on his posting history, he is one of the forum contributors who is talented in the field of plagiarism. Now everything is just a memory & anyone who knew him will definitely miss him.
Heart attack, died with a tablet in his hands.
Heart attacks are the number one cause of death in the world, they can occur suddenly even without a history of previous illness. Some people need to avoid drama to keep their heart and adrenaline and dopamine flowing through their body under control, too much is never good.