Elizabeth Vargas, who's been with ABC News since 1996 and has been co-anchoring 20/20 since 2004, confirmed yesterday that she is in rehab for alcohol abuse, E! reports. "Like so many people, I am dealing with addiction. I realized I was becoming increasingly dependent on alcohol," Vargas says in a statement. "I am in treatment and am so thankful for the love and support of my family, friends, and colleagues at ABC News. Like so many others, I will deal with this challenge a day at a time. If coming forward today gives one other person the courage to seek help, I'm grateful."