These are not good odds. Researchers have found that 41 percent of teens who live with a gun in the home have easy access to it. And 41 percent of teens – coincidentally the same figure – have had suicidal thoughts or mental health issues. Suicide is the second leading cause of death for American teenagers, and earlier studies have shown that not having a gun in the house lowers the risk of teen suicide. So, parents, either drop the arms or lock them up.