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Stephanie Buttermore, a fitness influencer and physician who researched ovarian cancer throughout her career, has died at age 36, her fiance and fellow fitness YouTuber Jeff Nippard announced Friday.
Nippard’s team posted on Instagram and YouTube the “important announcement” made with “deep sadness.”
The announcement described Buttermore’s death as “sudden”.
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Jeff Nippard announced on social media that his fiancee, Stephanie Buttermore, had died suddenly at the age of 36. (@jeffnippard/Instagram)
“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,” the post read.
No details are currently available about her death and Nippard’s team asked for privacy.
Buttermore and Nippard appeared in several YouTube videos together during their decades-long relationship. The two became engaged in 2022, and Nippard posted a photo of the two of them on Valentine’s Day.
Nippard’s Instagram and YouTube accounts closed comments on posts announcing Buttermore’s death, but fans flooded the comments to show their support for Nippard, a former professional bodybuilder and powerlifter.
“Heaven has gained an amazing angel. Someone who cared so much about others. Someone who cared so deeply about others. Praying for you Jeff and her family,” fellow influencer Buff Bunny wrote on Nippard’s Valentine’s Day post.
Nippard posted this photo of himself and Buttermore on Valentine’s Day. (@jeffnippard/Instagram)
“I’m so sorry. I’ve followed Stephanie for years, what a beautiful soul. I’m praying for you and your loved ones,” another user wrote.
Buttermore posted content related to nutrition and fitness, including videos about her own personal struggles with eating disorders and mental health. She gained more prominence during her self-titled “All In” challenge, where she would eat up to 10,000 calories a day to promote healthy weight gain for women and body positivity. Nippard’s latest video, published last week, was about body dysmorphia.
Buttermore stopped posting on social media and YouTube in March 2024, citing improved mental health from being away from social media.
Nippard and Buttermore got engaged in 2022 and were together for a decade. (@jeffnippard/Instagram)
Buttermore gained over 1 million YouTube subscribers, while Nippard, a drug-free Canadian powerlifting and bodybuilding champion who now posts science-based lifting information, has over 8 million.
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