On June 2, 2009, Cervenka released a statement revealing that she had been diagnosed with multiple sclerosis. Well before this diagnosis, she and X have actively supported Sweet Relief, a charity that aids uninsured artists. Sweet Relief was begun by musician Victoria Williams when she herself was diagnosed with MS. In 2011, Cervenka said she may have been misdiagnosed. However, Cervenka had to cancel a Spring 2011 tour due to problems associated with her MS. During a July 2015 interview, John Doe said that the multiple sclerosis diagnosis was a misdiagnosis, that Cervenka, after consulting with various doctors who were not able to diagnose her, is healthy.