Fitness influencer Stephanie Buttermore tragically died in March 2026 at the age of 36.
“It is with profound sorrow that we share the sudden passing of Jeff’s fiancée and partner of 10 years, Stephanie,” a social media statement from a spokesperson for Buttermore’s fiancé, Jeff Nippard, 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 ovarian cancer. We kindly ask for privacy as we navigate this tragic loss. Thank you for your understanding and support during this difficult time.”
A cause of death was not immediately revealed for Buttermore, who got engaged to bodybuilder Nippard in 2022 after six years of dating.
Keep scrolling to learn more about Buttermore’s life and legacy:
Stephanie Buttermore Was a Fitness Educator and Social Media Star
Stephanie Buttermore was an influencer with more than 528,000 Instagram followers and 1 million YouTube subscribers at the time of her death. She shared content about fitness training, nutrition, beauty and other lifestyle subjects.
Stephanie Buttermore Researched Ovarian Cancer
Long before Stephanie Buttermore started posting on social media, she received her Ph. D and worked as a cancer scientist.
“I obtained my Ph.D. in pathology and cell biology with a focus on the molecular mechanisms that drive ovarian cancer progression,” a biography on her YouTube page reads. “I mix science and fitness into all facets of life. I currently do cancer research but LOVE to workout and eat good food.”
Stephanie Buttermore Was a Proud Advocate of Body Positivity
Stephanie Buttermore was always proud of her body — no matter her size.
“I heard every fat-phobic slur under the sun when I gained weight,” Buttermore wrote via Instagram in March 2023, alongside a handful of swimsuit photos. “But, you know what, I look back at these pictures like DAMNNN … I was HAWWWT 🔥.”
She added, “The sentiment of ‘F the haters’ never personally worked for me. I mean, I wish it did, it would make life so much easier. I prefer to just focus on me, my goals and giving my energy to those who deserve it.”
Months later, Buttermore proclaimed via social media that she felt “super happy and comfortable” in her skin.
“I can live my life eating intuitively and my body feels naturally settled here,” she captioned a May 2023 upload.
Stephanie Buttermore and Jeff Nippard Were Together for 10 Years Before Her Death
Jeff Nippard and Stephanie Buttermore. Courtesy of Jeff Nippard/ Instagram
Stephanie Buttermore started dating bodybuilder Jeff Nippard in 2016 after he slid into her DMs. After six years of dating, Nippard proposed in October 2022.
“We got along like best friends right away because we established a foundation of shared interests and values from the beginning,” Nippard gushed via Instagram at the time. “We grew together as we learned from each other, travelled the world together, always supported each other, and used the power couple equation to build each other up in so many different ways.”
Stephanie Buttermore Took a Social Media Hiatus Ahead of Her Death
Stephanie Buttermore took a step back from posting content on Instagram in the years preceding her death.
“My mental health has been the best it’s ever been,” Buttermore noted in a May 2024 Instagram post about her online hiatus. “I no longer struggle with anxiety. At all. It was almost crippling a few years ago to the point I felt I couldn’t breathe or leave my house. Now I really don’t have to care whether people liked what I posted or if they are saying negative things about me.”
Leaving Instagram behind also allowed Buttermore to focus on her relationships.
“When I’m with my family or Jeff, I’m much more immersed in the moment,” she said. “I take photos for the sake of saving memories and not because I’m going to post it on my story. I never get caught not listening to someone because I’m checking comments, and I’m in a better mood because I’m not anxious. Family time is family time.”
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