Jillian Michaels is not afraid to speak her mind, no matter what the topic, resulting in many feuds with health professionals and celebrities over the years.The former Biggest Loser star has publicly called out Andy Cohen, Lizzo and Teddi Mellencamp for their differing opinions — and questioned fitness trends and weight loss programs.“We’ve not been friendly for years,” Michaels exclusively told Us Weekly in January 2019 of her tumultuous relationship with Cohen.