Mary Tyler Moore debuted on television in the 1950s, appearing in commercials that aired during a popular show. Her star continued to rise until Moore landed the eponymous sitcom that became a staple of 1970s pop culture.
But it was another event that cast her in a new, unfamiliar and lifelong role: a diagnosis of Type 1 diabetes at age 33. Moore, who died Jan. 25 at age 80, did more than just fight her disease. She leveraged her star power to become an advocate for diabetes research.