Direct answer: Stephanie Buttermore, a fitness influencer and scientist, died in March 2026 at age 36. Her fiancé Jeff Nippard shared the news publicly, but the cause of death has not been officially disclosed.
What’s known and context:
- Timeline: She had been largely off social media since 2024, with her last public posts referencing improved mental health before her passing in early 2026.[2][5]
- Public statements: Nippard’s team issued a sorrowful announcement confirming her passing and requesting privacy for the family.[5][2]
- Background: Buttermore was a cancer researcher by training, holding a PhD focused on ovarian cancer; she built a large following by sharing insights on health, nutrition, and body positivity.[2]
Notes for readers seeking verification:
- Several outlets reported the death and described the lack of a disclosed cause; official statements emphasized privacy while honoring her contributions.[5][2]
- Coverage from other outlets echoed the same timeline and family-family privacy stance; some videos and articles discussed fan reactions and the mystery around the circumstances.[3][4][9]
If you’d like, I can compile a concise timeline or pull direct quotes from the public statements to cite precisely.
Sources
The fitness world is mourning the loss of beloved influencer and researcher Stephanie Buttermore.Her fiancé, bodybuilder and YouTuber Jeff Nippard, confirmed the heartbreaking news through a statement shared on Instagram Friday,...
www.geo.tvFans are mourning the death of fitness influencer Stephanie Buttermore, who died at the age of 36. Buttermore's death was announced by her fiancé Jeff Nippard on social...
www.thenews.com.pkStephanie Buttermore, who breathed her last at 36 this week, was a successful fitness influencer, with more than a million subscribers on YouTube and more than 500,000 followers on Instagram before stepping away from social media in...
www.geo.tvThe fitness community is mourning the sudden passing of Dr Stephanie Buttermore, a renowned scientist and influencer and wife of popular natural bodybuilder and fitness content creator Jeff Nippard, at age 36. Nippard and Buttermore were together for 10 years and got engaged in October 2022. 🎥 Stephanie Buttermore, Popular Fitness Influencer Jeff Nippard’s Fiancee, Dies at 36.
www.latestly.comThe fans of fitness influencer Stephanie Buttermore, who died last week, are still raising a big question as the cause of her death has not been confirmed. Stephanie’s fiancé shared a...
www.thenews.com.pkThe fitness community is mourning the sudden passing of Dr Stephanie Buttermore, a renowned scientist and influencer and wife of popular natural bodybuilder and fitness content creator Jeff Nippard, at age 36. Nippard and Buttermore were together for 10 years and got engaged in October 2022. 🎥 Stephanie Buttermore, Popular Fitness Influencer Jeff Nippard’s Fiancee, Dies at 36.
www.latestly.com