It's not the root cause, but I'm sure having easy access to a gun seems a lot quicker and cleaner than, for example, hanging yourself. I know a lot of people who probably wouldn't be around right now if their folks kept guns in the house.

I believe the going theory is firearms are more likely to succeed whereas other means aren't. So you get fewer suicide attempts and more suicides :(

We need to be asking why are teen boys committing suicide at high rates? But also we need to be able to support and help them somehow instead of casting them off on their own once they hit puberty.

PS:

Vinik noted that the suicide rate, already at a 20-year high, is rising the most quickly among young people of color.

Article goes on to talk about the difficulty of accessing mental health care for black boys, and other factors.

Presently, the firearm suicide rate is highest with Native American and Alaska Native young men and Black men — but Asian and Pacific Islanders, Latinx, and Black young men constitute the fastest-growing firearm suicide rates of any racial and ethnic groups in the Unites States.

Also

Michael pointed to “traditional, cisgender masculinity” as a factor in the rising suicide rate among teenage boys and young men.

“If you are a person that’s either been raised to believe that seeking help for mental health ailments is a sign of weakness, you might also be a person at risk for suicide,” Michael said.

People always say it's about metal problems and not guns. And that might be true, but will you Americans ever try and fix that? Maybe by reducing healthcare prices or something.

So far it seems like the answer is: No, we won't do anything about it.

At very least it makes sense to force parents to keep their guns locked away from their children and everyone else.

No-one under 18 should ever be allowed non supervised access to weapons and everyone over should have to take a mandatory safety and usage course and of course a comprehensive background check.