“dealing with ongoing health issues” that prevented her from participating in promotional activities for the new season of her daytime talkshow, which the show said in a statement last week were a “direct result of Graves’ disease and her thyroid condition.”Celebs like Leah Remini, Whitney Cummings and Sherri Shepherd have filled in for Williams on the first few weeks of the new season of her talkshow, which debuted Oct. 18.