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Stephanie Buttermore, a fitness influencer and doctor who studied ovarian cancer throughout her career, has died at the age of 36, her fiancé and fellow fitness YouTuber Jeff Nippard announced Friday.
Nippard’s team posted on Instagram and YouTube the “important announcement” which was made with “deep sadness.”
The announcement called Buttermore’s death “sudden.”
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Jeff Nippard announced on social media that his fiancée, Stephanie Buttermore, died suddenly at the age of 36. (@jeffnippard/Instagram)
“As many of you know, Stephanie meant everything to Jeff. She will be remembered for her warmth and compassion, her love for her family, and her doctoral research into ovarian cancer,” the post read.
No details are currently available regarding his death and Nippard’s team has requested privacy.
Buttermore and Nippard appeared in numerous YouTube videos together during their decade-long relationship. The two got engaged in 2022 and Nippard posted a photo of the two of them on Valentine’s Day.
Nippard’s Instagram and YouTube accounts shut down comments on posts announcing Buttermore’s death, but fans flooded the comments to show support for Nippard, a former professional bodybuilder and powerlifter.
“Heaven gained an incredible angel. Someone who cared so deeply for others. Someone who cared so deeply for others. Praying for you Jeff and his family,” fellow influencer Buff Bunny posted on Nippard’s Valentine’s Day post.
Nippard posted this photo of him and Buttermore on Valentine’s Day. (@jeffnippard/Instagram)
“I’m so sorry. I’ve been following Stephanie for years, what a beautiful soul. Praying for you and your loved ones,” another user wrote.
Buttermore has posted nutrition and fitness content, including videos about her own personal struggles with eating disorders and mental health. She gained notoriety during her self-dubbed “All In” challenge, where she ate over 10,000 calories a day to promote healthy weight gain for women and body positivity. Nippard’s most recent video, posted last week, was about body dysmorphia.
Buttermore stopped posting on social media and YouTube in March 2024, citing an improvement in her mental health thanks to her absence from social media.
Nippard and Buttermore got engaged in 2022 and stayed together for a decade. (@jeffnipppard/Instagram)
Buttermore has amassed more than a million subscribers on YouTube, while Nippard, a Canadian powerlifting and drug-free bodybuilding champion who now publishes scientific information about lifting, has more than 8 million.
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