Dolly Parton is sharing an update on her health while delivering the "bad news" that she has canceled her previously postponed Las Vegas shows. "I am here to give you an update on a few things going on in my life," Parton, 80, said in an Instagram video on Monday, May 4. "First, it's concerning my health. And I have some good news and a little bad news. The good news is I'm responding really well to meds and treatments and I'm improving every day." The "Jolene" singer continued, "Now, the bad news is, it's gonna take me a little while before I'm up to stage performance level.