APPLETON, Wis. — Fitness influencer and researcher Stephanie Buttermore has died at the age of 36, according to a statement from her fiancé's team. The announcement, shared on Instagram on Friday, March 6, described her passing as sudden and expressed profound sorrow from those close to her.
Buttermore, who amassed a significant following on social media for her content on fitness and nutrition, was the longtime partner of bodybuilder and fitness expert Jeff Nippard. The couple had been together for 10 years, with Nippard proposing in 2022 after six years of dating. "It is with profound sorrow that we share the sudden passing of Jeff’s fiancée and partner of 10 years, Stephanie," the statement from Nippard's team read. "As many of you know, Stephanie meant the world to Jeff."
The message highlighted Buttermore's personal qualities and professional pursuits, noting her warmth, compassion, and dedication to her family. It also mentioned her Ph.D. research focused on ovarian cancer, underscoring her commitment to scientific inquiry alongside her online presence. "She will be remembered for her warmth and compassion, her love for her family and her Ph.D research on ovarian cancer," the statement continued. "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 has not been publicly disclosed, leaving many in the fitness and influencer communities grappling with the unexpected news. Buttermore's death comes amid a series of losses in the influencer world, including those of figures like Karla Thaynnara, as noted in related coverage of notable departures in 2026. However, details specific to Buttermore's situation remain private, with her family and Nippard requesting space during their mourning period.
Buttermore built a substantial online audience, boasting over 570,000 followers on Instagram and more than 1 million subscribers on YouTube. Her content typically revolved around fitness routines, nutritional advice, and personal wellness journeys, resonating with a broad audience interested in health and self-improvement. She had been active in the digital space for years, but in 2024, she chose to step back from social media to prioritize her mental health.
In a candid Instagram post from May 2024, Buttermore opened up about the benefits she experienced during her hiatus. "I’ve been pretty MIA on social media all year, but I’ve taken some pretty valuable things away from it," she wrote. "My mental health has been the best it’s ever been, but I’ll give you some specifics. 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."
This shift allowed Buttermore to engage more fully with her everyday life, free from the pressures of constant online scrutiny. She described becoming "way more present" in her interactions, particularly with family and Nippard. "When you don’t even think about opening Instagram out of habit, it’s like finally opening your eyes to what’s going on around you," she added. "When I’m with my family or Jeff, I’m much more immersed in the moment. 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."
I’ve been pretty MIA on social media all year, but I’ve taken some pretty valuable things away from it. My mental health has been the best it’s ever been... I no longer struggle with anxiety. At all.
Despite these positives, Buttermore acknowledged missing the connections she had forged through her platforms. She had not only stopped posting but also largely avoided consuming content, opening the app only about once a month. "I miss my social media friends and community," she noted. "So not only did I not post, I also didn’t consume any content on IG... I genuinely missed seeing what my friends were up to. I miss the positive interactions I used to have in my DMs and in my comments. Of course social media can be toxic, but it can also be an amazing place to connect, learn, get motivated and make friends."
Her reflections captured the dual nature of social media in the lives of influencers—a tool for inspiration and community, yet one that could exacerbate personal struggles like anxiety. Buttermore's openness about her mental health journey had endeared her to many followers, who appreciated her vulnerability amid the often polished facade of online fitness culture.
Born and raised in an environment that valued education and health, Buttermore pursued advanced studies that complemented her public persona. Her Ph.D. work on ovarian cancer represented a deeper layer to her identity, blending scientific rigor with her advocacy for wellness. While specifics of her research were not detailed in the public statement, it positioned her as more than just a social media figure; she was a contributor to medical knowledge in a field affecting countless women.
Nippard, her fiancé, is a prominent figure in the bodybuilding and fitness industry, known for his evidence-based training programs and large online following. The couple's relationship, which began around 2014, had been a source of mutual support, with Buttermore occasionally featuring in his content and vice versa. Their engagement in 2022 marked a milestone, celebrated by fans who followed their journey closely.
The fitness influencer space has seen its share of tragedies over the years, drawing parallels to broader celebrity losses. Reports have linked several high-profile deaths to various factors, though Buttermore's case remains undisclosed. According to coverage from Us Weekly, her passing adds to a list that includes other influencers who left lasting impacts on their audiences.
Fans and peers have begun sharing tributes online, recalling Buttermore's encouraging messages and approachable demeanor. One commenter on the announcement post wrote about how her videos had motivated them through tough workouts, while another praised her shift toward mental health advocacy. These responses underscore the void her absence leaves in a community built on shared aspirations for better living.
As the news spreads, questions linger about the challenges faced by public figures in balancing personal well-being with professional demands. Buttermore's story, from her rise as an influencer to her intentional break for mental health, serves as a reminder of the human elements behind digital personas. Her family, including survivors who cherished her deeply, continues to seek privacy amid the grief.
Looking ahead, Nippard's team has not indicated future plans regarding Buttermore's online legacy, such as whether her channels will remain active or if content will be archived. The focus remains on honoring her memory through the values she embodied—compassion, presence, and pursuit of knowledge. In a world where social media connections can feel both vital and overwhelming, Buttermore's life and untimely death prompt reflection on how individuals navigate fame, health, and relationships.
Authorities have not released any official reports on the circumstances of her death, and no location was specified in the initial announcement. Buttermore is survived by her family and Nippard, with whom she shared a decade of partnership. The Appleton Times will continue to follow developments as more information becomes available from confirmed sources.