Melissa Joan Hart has lost nearly 20 pounds and is feeling "better than I have in a really long time." The Sabrina the Teenage Witch actress, 49, opened up about experiencing perimenopause in an interview with People published on Monday, February 2, noting that she didn't think she would be able to lose weight because of it. According to the Mayo Clinic, "perimenopause is the time before menopause when your body is getting ready to stop having periods.