Fitness influencer and cancer research scientist Stephanie Buttermore has died at the age of 36. Her fiancé, fellow bodybuilder Jeff Nippard, announced her sudden passing in a statement posted to Instagram on March 6.
Nippard's statement expressed profound sorrow, celebrating Buttermore's warmth, compassion, love for family, and her dedicated PhD research focused on ovarian cancer progression. The couple had been together for ten years and announced their engagement in October 2022. No cause of death has been made public.
Buttermore, who had over a million YouTube subscribers, was a prominent voice promoting body positivity and intuitive eating. She had stepped back from her influencer career in May 2024 to prioritize her mental health, stating the break had been greatly beneficial.
The news comes shortly after she celebrated her birthday on February 25. Nippard has requested privacy during this time, and fans have flooded his social media with messages of condolence.