I wouldn't say it's a trend but a lot of teens need people to listen to them, talk to them and encourage them.
A lot are going through difficult times and don't know how to cope with it. It could be something like people taunting them, bullying them, sexual abuse, relationship gone wrong or they're just not happy within themselves.
There are teens that will not open up to you until you start asking direct questions. Those who don't talk, tend to let it build up inside, till it eats away at them, then their minds start to suggest all sorts and before you know it, they've killed themselves.