Why do celebrities act crazy? They are.

From Wired Science:

Celebrities' bad behavior is rooted in mental illness, according to "Dr. Drew" Pinsky, who is best known as the host of Celebrity Rehab and Loveline - a nationally syndicated radio show that invites listeners to call in with questions about sex and drugs.

In his latest book, The Mirror Effect (on bookstore shelves Tuesday), he spells out a theory that stars are predisposed to narcissistic personality disorder long before they become famous. Their dysfunctional behavior is rewarded by Hollywood and portrayed as normal by the press. Read more...