re: Depressed people in denial

Being in denial about depression is really common. A lot of people don't even realize what depression feels like, but what you've said sounds a lot like depression.

I wouldn't call his parents. That would not be helpful and it would probably just add stress to his situation.

Read this to learn what you can do to help and how to cope with living with a depressed person (because it can definitely affect you too... trust me, been there and done that).

LINK

edit: calling his parents might be something you can do later, but it's not a first step.