As Rhiannon noted the idea that there is a simple thing such as mental health issues, and you address it in that way is just odd. With only a hint of joking, isn't being a teenager by definition having 'mental health issues '?
Speaking as someone who has had depression on and off from before the age of 10, I think my parents would say/have said that I was a mostly very easy child/teenager to parent, at some stages because of rather than despite the depression. (at least that's what I tell ourselves on the not too bad days).