how did you find out about this?
i could understand his fear. yes, be there for him. If you feel right about it, mention it. he could get pissed off that someone told you, he could withdraw even more. but at least he could see that you care and that you want to see him get past this, even though it's a difficult thing to get past.
If he doesn't get the encouragement and support of seeking help somehow, he may become very depressed and psychologically damaged for the rest of his life. The risk you can take is losing him as a friend- at least for a while, if not forever- if that is the key to have him see that he can do something about it. Ask yourself what you feel good about doing.....
Be the light- he'll see it.
