Canadian fitness influencer and fiancée of Jeff Nippard announced her passing on Friday, March 6, 2026, in an Instagram post. The cause of death has not been publicly disclosed. She was described as a compassionate, inspiring figure known for her PhD research on ovarian cancer and her advocacy for mental health and intuitive eating.
Her last social media post was in April 2024, and she had been absent from public platforms for nearly a year prior to her death. Tributes have poured in from fans and the fitness community, remembering her warmth, vulnerability, and impact.
Stephanie Buttermore is an American fitness model, YouTuber, social media influencer, and cancer research scientist. Born on
February 25, 1990, in the United States, she is currently
35 years old (as of March 2026). She holds a
Ph.D. in Biomedical Sciences, Pathology & Cell Biology from the University of South Florida, where she specialized in ovarian cancer research.
She gained widespread recognition through her YouTube channel, launched in November 2014, which has over
1.2 million subscribers. Her content blends fitness, nutrition, lifestyle, and science, often incorporating her academic background to provide evidence-based advice. She is also highly active on Instagram, where she has over
600,000 followers, sharing workout routines, progress updates, and personal insights.
Key facts:
- Nationality: American
- Ethnicity: Multiracial (half-Asian, half-White)
- Height: 5 ft 5 in (165 cm)
- Weight: Approximately 117–121 lbs (53–55 kg)
- Profession: Fitness model, fitness trainer, YouTuber, scientist
- Relationship: In a relationship with Canadian bodybuilder Jeff Nippard
- Net worth: Estimated between $600,000 and $700,000
- Famous for: Viral videos like the “10,000 Calorie Challenge” and her transformation journey, as well as her 2014 NPC Sunset Classic Bikini Champion title.