Canadian fitness YouTuber Jeff Nippard's team announced on October 25, 2024, that his fiancée, Stephanie Buttermore, had died suddenly at the age of 36. The statement was posted on Nippard's Instagram and YouTube accounts, expressing "profound sorrow."[1][2]

Buttermore was a fitness content creator known for videos on nutrition, body positivity, and personal experiences with eating disorders and mental health. She gained attention with her "All In" challenge, promoting healthy weight gain through high-calorie intake.[2][3]

A PhD candidate in biomedical engineering at the University of British Columbia, Buttermore researched mathematical modeling of ovarian cancer metastasis. She ceased posting on social media in March 2024, citing benefits to her mental health.[3][4]

Nippard, a former drug-tested powerlifter and natural bodybuilding competitor who won IPF University World Championships in 2012, has collaborated with Buttermore in videos over their decade-long relationship. The couple got engaged in 2022.[1][5]

Nippard's YouTube channel has 4.78 million subscribers as of October 2024, while Buttermore's had 941,000. Comments were disabled on the announcement posts, with fans expressing condolences on earlier content.[2][6]

No further details on the cause of death were provided, and Nippard's team requested privacy.[1][2]

Sources

1. Instagram (Jeff Nippard), "Important Announcement," October 25, 2024, https://www.instagram.com/p/DBT2wBTO0jF/
2. TMZ, "Fitness Influencer Stephanie Buttermore Dead At 36, Fiance Jeff Nippard Reveals," October 25, 2024, https://www.tmz.com/2024/10/25/stephanie-buttermore-dead-fitness-influencer-jeff-nippard-fiancee/
3. BarBend, "Influencer and Ph.D. Candidate Stephanie Buttermore Dies at 36," October 25, 2024, https://barbend.com/stephanie-buttermore-dies-age-36/
4. YouTube (Stephanie Buttermore channel), Channel page and last video "Why I'm Quitting YouTube," March 2024 (accessed October 26, 2024), https://www.youtube.com/@stephaniebuttermore
5. Wikipedia, "Jeff Nippard," (accessed October 26, 2024), https://en.wikipedia.org/wiki/Jeff_Nippard
6. YouTube (Jeff Nippard channel), Channel about page (accessed October 26, 2024), https://www.youtube.com/@JeffNippard/about