Well, around here, obituaries usually state the cause of death. A few times, I have seen "took his own life," but usually it's a person who is well known. The obituary was well written, probably by his dad, who is an English teacher.
This person was 24, so within the age for increased suicide risk, but the reason I suspect this, is that there is a family history of stuff like this. Not that genetics determine everything, but from what I read, it seemed as if he had bounced around a bit; still in undergraduate school, although he started right after HS. It's just a feeling, maybe I am making too many assumptions. I can't go to the funeral, but eventually I might find out something.
The military has hardened my son to death, although I am pretty sure that most people think I am "unfeeling" about these matters, too. But, I explained to him that when it's the unexpected death of a young person, it's different than someone who is fighting in a war. That's bad, but not an unexpected surprise.