Fitness Influencer and Cancer Researcher Stephanie Buttermore Dies at 36

2026-03-07 - 16:05

Fitness content creator and biomedical scientist Stephanie Buttermore, 36, died unexpectedly on Friday. Her fiancé, Canadian bodybuilder Jeff Nippard, announced her passing in a public statement, though a specific cause of death remains undisclosed. Buttermore’s death concludes a digital career that accumulated over 1.17 million YouTube subscribers and 500,000 Instagram followers before she halted content production in mid-2024. Following Friday’s announcement, followers directed thousands of condolence messages to Nippard’s social media accounts. Before her transition to fitness broadcasting, Buttermore earned a doctorate in pathology and cell biology from the University of South Florida. Her academic research focused on the molecular mechanisms driving ovarian cancer progression. Online, she became known for documenting her decision to stop restrictive dietary practices to reach a natural physiological weight. In May 2024, Buttermore announced an indefinite departure from social media platforms, citing severe anxiety. At the time, she stated her mental health had subsequently improved, writing, “I no longer struggle with anxiety. At all.” On March 6, Nippard’s team issued a formal statement confirming her death. “It is with profound sorrow that we share the sudden passing of Jeff’s fiancée and partner of ten years, Stephanie,” the statement read. “She will be remembered for her warmth and compassion, her love for her family, and her PhD research on ovarian cancer.” The statement concluded with a request for privacy for the family.