US Edition
Fitness Influencer Stephanie Buttermore Dead at 36, Fiance Confirms
Stephanie Buttermore, known for blending fitness with cancer research, died suddenly at 36; her fiancé asked for privacy amid ongoing speculation about the cause.
- Jeff Nippard's team posted an Instagram announcement on Friday, March 6, 2026, reporting the sudden passing of Stephanie Buttermore, his fiancée and partner of ten years, with profound sorrow.
- The family and Nippard's team asked for privacy, noting no cause of death has been disclosed after Buttermore's sudden passing.
- Stephanie Buttermore, 36, had just turned 36 on February 25, and her last public moment was a Valentine's Day post with her fiancé, who shared a photo of them.
- Messages poured in from followers and the fitness community, with many fans leaving condolences on other posts after comments were restricted on the announcement post.
- Combining research and content creation, she held a PhD in pathology and cell biology, focused on ovarian cancer detection with RHAMM protein, and had over 1.17 million YouTube followers and over 525,000 Instagram followers.
28 Articles
28 Articles
‘Inspiring’ fitness influencer, cancer researcher, suddenly dies at 36
Stephanie Buttermore, a former bodybuilder who promoted body positivity and wellness, and spoke openly about her “crippling” anxiety, died less than two weeks after her birthday on Feb. 25.
The Independent
The Independent (US)Stephanie Buttermore, influencer fiancée of YouTube star Jeff Nippard, dies aged 36
News of Buttermore’s death comes days after she celebrated her 36th birthday
Fitness Influencer Stephanie Buttermore Dead at 36, Fiance Confirms
Fitness influencer Stephanie Buttermore has died. She was 36. “It is with profound sorrow that we share the sudden passing of Jeff’s fiancée and partner of 10 years, Stephanie,” a Friday, March 6, Instagram statement from bodybuilder Jeff Nippard’s team read. “As many of you know, Stephanie meant the world to Jeff.” The statement continued, “She will be remembered for her warmth and compassion, her love for her family and her Ph.D research on ov…
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