Of course, and the only way you can really deal with that problem is indirectly, and it is by reducing the stigma to the point where people don't feel they have to deny it.
The problem now is that people are so afraid. If someone has a mental problem and they are so afraid that their friends, their family, will say to them, get over it, there's nothing wrong with you, etc., then they're afraid to raise it with even their closest friends. So you can't attack their problem directly; you've got to change the environment, which makes it safe for them to talk about it.