Sydney Towle, the TikTok creator who turned a devastating cancer diagnosis into a platform of raw honesty for hundreds of thousands of followers, has died. 'People will comment things like, 'You can't have cancer, you still have your hair,' or 'You don't look sick',' Towle said. In 2026, Towle announced plans to run the New York City Marathon alongside the Cholangiocarcinoma Foundation, calling the goal a 'dream come true' even as she continued active treatment. As recently as June 2026, Towle had told her followers she remained hopeful about her prognosis. Sydney Towle leaves behind a body of work that reshaped how a generation of young people talk about cancer, illness, and mortality online.