Zac Efron cuts ties with discouraging friends?

Actor Zac Efron has reportedly distanced himself from friends, who question his sobriety.
Some of 26-year-old Efron's friends are worried about the his alleged drug problems but the actor apparently believes that he has no problems, reported TMZ online.
The '17 Again' star had quietly sought help in a rehab facility last year as his hard-partying lifestyle and drug issues had got out of hand.
Friends think that Efron could become the next Cory Monteith if he does not get help.
Efron's friends are reportedly scared to bring up the subject of his sobriety otherwise they will be ignored and cut-off from the actor's life.

'Glee' star Monteith, 31, was found dead in a Vancouver hotel last year. The autopsy reports said the actor died of mixed drug toxicity.