Actress Demi Moore is back in the news, and this time she is rumored to have checked into rehab for substance abuse problems. The 49-year-old actress, whose recent pictures show her looking thin and frail, claims to be entering rehab to treat her exhaustion. However, after being taken to the hospital in an ambulance early this week, many think she could be struggling with anorexia or drugs. This past November, Moore confirmed that her marriage to actor Ashton Kutcher had ended. She had been married to the 33-year-old actor for six years. Moore has also dropped out of the film Lovelace, in which she was set to play legendary feminist Gloria Steinem based on the life of porn actress Linda Lovelace. The actress has a history of substance abuse, and received treatment at a rehab during the 1985 movie St. Elmo’s Fire. Her mother also battled addiction throughout her life.