Renowned science communicator and fitness influencer Stephanie Buttermore leaves behind a powerful legacy of body positivity, research, and honesty about mental health
Renowned scientist-turned-fitness influencer Stephanie Buttermore has died at the age of 35, her fiancé, Canadian bodybuilder and YouTuber Jeff Nippard confirmed on March 6, 2026. Her passing has left millions of followers and members of the fitness community mourning the loss of a beloved educator and advocate for balanced health.
Buttermore was widely respected for blending scientific knowledge with practical fitness advice. She earned a PhD in pathology and cell biology from the University of South Florida, where her research focused on the molecular mechanisms of ovarian cancer.
Beyond academia, she gained global recognition through YouTube and social media, where she documented her personal “All In” journey—an approach aimed at restoring natural body weight and healing from restrictive dieting. Her content about extreme hunger, hormonal balance, and body positivity resonated with a wide audience.
Despite her success, Buttermore openly discussed mental health challenges. In April 2024, she stepped away from social media due to severe anxiety, later sharing that the break significantly improved her well-being.
With an estimated net worth of about $500,000, built largely through digital platforms and collaborations, Buttermore created a unique space where science and fitness intersected.
Nippard and her family have asked for privacy while honoring her compassion, intellect, and dedication to helping others live healthier lives. Her influence continues to inspire fans worldwide.
About The Author
