Singer Natalie Cole 's past drug use seems to be catching up with her. The singer's rep has confirmed to People.com that Natalie have been diagnosed with Hepatitis C -- which is likely the result of her hard partying ways years ago, but doctors are optimistic that Nat will beat it. "Natalie has had a terrific response to her medication and is now virus negative," Dr. Graham Woolf, Associate Clinical Professor of Medicine at U.C.L.A./Cedars-Sinai Medical Center, said in a statement. "This gives her an increased chance of cure." Sadly, the doc goes on to say that Nat is suffering from side effects from the anti-viral medicine, including fatigue, muscle aches and dehydration, but, "she is recovering from these." Despite her health issues, Natalie is still expected to release her new album, Still Unforgettable , on Sept. 9. Let's send her good thoughts. ...