Jeff Nippard, Stephanie Buttermore’s Engagement and Last Valentine’s Day Photo Surfaces Amid Her Tragic Death

The fitness community is in mourning following the sudden death of Stephanie Buttermore, a science-based fitness influencer and cancer researcher. The 36-year-old’s passing was confirmed by her longtime partner and fiancé, Canadian fitness YouTuber Jeff Nippard, on March 6, 2026, leaving fans shocked and heartbroken.

Last Valentine’s Day Photo and Engagement

Stephanie had inspired millions through her candid discussions on health, nutrition, and body image, building a devoted following that continues to honor her memory. Fans have revisited the couple’s social media posts, including their last Valentine’s Day photo shared by Jeff Nippard on February 14, 2026, which now holds deep emotional significance.

Jeff Nippard confirmed Stephanie’s death in a statement:

“She will be remembered for her warmth and compassion, her love for her family, and her PhD research on ovarian cancer. We kindly ask for privacy as we navigate this tragic loss. Thank you for your understanding and support during this difficult time.”

The couple had been together for nearly a decade. Jeff proposed in November 2022, and though no official wedding date had been announced, reports indicate that wedding preparations were reportedly underway, and the couple had purchased what Stephanie referred to as their “dream home.” Their long-lasting relationship, joint projects, and strong presence on each other’s social media accounts made them one of the most admired couples in the fitness community.

A Decade of Love and Collaboration

Jeff and Stephanie first connected over a shared passion for science and fitness on social media, where they were both gaining recognition for evidence-based fitness and nutrition content. Their first date was reportedly a workout session, and their relationship quickly grew into both a personal and professional partnership.

Over the years, they collaborated on numerous fitness projects, research-inspired videos, and educational content. Fans admired their chemistry and mutual support, with their bond becoming an integral part of their online presence.

Stephanie Buttermore’s Career and Legacy

Stephanie held a PhD in Pathology and Cell Biology from the University of South Florida, focusing on ovarian cancer research. She became widely recognized for her insights on dieting, metabolic health, and her “All-In” nutrition journey.

To date, the cause of Stephanie’s death has not been officially disclosed, either through Jeff’s statement or other sources, leaving fans concerned and awaiting further updates. Her legacy, both as a scientist and fitness influencer, continues to inspire countless people around the world.