@arishin Sometimes depression and anxiety stem from physical issues. The brain is like any other organ in that it can get sick. Prime example is if he was showing signs of a malfunctioning pancreas. That can indicate diabetes, and you'd have it checked.
A lot of people do not realise there are other physical issues that have symptoms of depression, anxiety, and intrusive thoughts. The first thing that comes to mind is thyroid. My friend's thyroid levels were off so slightly that the doctor kept ignoring her concerns until it started to swell for no apparent reason. As soon as she got on the meds, all the symptoms alleviated at least a little, including the depression.
The point of my comment is to remind you that a depressed kid is not always a reflection of your parenting. Sometimes, it is the bodies way of making its illness known. As such, you don't need to feel like it might be an impugnment against your parenting because there is a distinct possibility it is nothing of the sort.
Regardless of the cause, though, if your child is expressing suicidal ideations, whether or not you think he has a good reason for them, get him professional help. A physical checkup to be sure it's not a side effect of something else, and someone to help with the mental side of things as well.
Suicide rates are on the rise across the world.
This is an article from last year stating that there is a 5 fold increase in the US alone. That's just one country.
I've lost too many extended family members who apparently had it all going for them to suicide. The youngest was 19, not a month out of high school, excited to be accepted into the program of his choice at some college, apparently on top of the world. Now he's dead, and because I found out about his grad too late to get time off for his party, he doesn't know how very proud of him I was.
Don't run the risk. If the child is expressing suicidal ideations, take him
seriously. Doing otherwise is a potentially deadly thing to do; quite literally, the "tear your family apart" kind of deadly.
I apologise for how dire my comment has gone, but I've known far too many people who died of suicide, some younger than my cousin. It took an excellent support system to get me the help I needed before it became me. I have a decent life, alright family, great friends, and very little obvious reason for my mental health to have gotten so bad. But it did. And timely intervention saved me from that fate. Please get him that intervention.