Dr. Stephanie Buttermore Dies Suddenly at 36

Dr. Stephanie Buttermore, a prominent fitness influencer and ovarian cancer researcher, died suddenly at the age of 36, her fiancé, Canadian bodybuilder and YouTube star Jeff Nippard, announced on March 6, 2026. The news, shared via an Instagram statement from Nippard's team, has prompted widespread mourning in the fitness and scientific communities.

The announcement described Buttermore's passing as a tragic loss, noting that she had been Nippard's partner of 10 years. "It is with profound sorrow that we share the sudden passing of Jeff's fiancée and partner of ten years, Stephanie," the statement read. "As many of you know, Stephanie meant the world to Jeff. She will be remembered for her warmth and compassion, her love for her family, and her PhD research on ovarian cancer." It concluded with a request for privacy as Nippard and Buttermore's loved ones navigate their grief. No cause of death was disclosed, and officials have not released further details.

Buttermore had built a substantial online presence before stepping away from social media in May 2024 to prioritize her mental health. She amassed over 1.17 million subscribers on YouTube and more than 500,000 followers on...