Tribute to a fitness pioneer: Stephanie Buttermore dies at 36, fiancé confirms
Fitness influencer and doctor Stephanie Buttermore has died at 36, as fiancé Jeff Nippard announced the death was sudden. She researched ovarian cancer and championed healthy weight gain and body positivity, notably through her All In challenge, and had stepped away from social media in 2024 for mental health; details about the cause of death were not released.