So, clearly the anorexic people die because they starve themselves, people with depression commit suicide, but what's killing the people with ADHD? I know ADHD

So, clearly the anorexic people die because they starve themselves, people with depression commit suicide, but what's killing the people with ADHD? I know ADHD is correlated with greater risk taking, greater likelihood to abuse drugs, but is it severe enough to put it in the top 5 or 10?