Who is Kate Tolo? Meet anti-ageing millionaire Bryan Johnson’s girlfriend

For Bryan Johnson, the anti-ageing millionaire obsessed with perfecting his health, meeting his girlfriend Kate Tolo’s parents was a true ‘nail-biter’. The longevity entrepreneur, who spends $2 million annually on his extreme anti-ageing regimen, recently shared the experience on Instagram with surprising details: he ate everything Tolo’s mother prepared, including meat, bread and pasta! “I decided to live in her mum’s world,” Johnson wrote.

“I ate everything she prepared, including meat, bread and pasta, and embraced the discomfort of being an introvert in a week-long marathon social interaction with the entire extended family.”It’s a telling moment. For a man with a singular focus in life – ‘Don’t die’ – this sacrifice is no less. He has spent millions on optimising his health and slowing his ageing. From gulping dozens of supplements daily to not skimping on sleep, he sticks to the routine, no matter what.

Willingly compromising his strict health protocol reveals just how important Kate Tolo has become. But who exactly is she? Here’s everything you need to know about Kate Tolo.

Who is Kate Tolo?

So, who is the woman who has won the heart of anti-ageing millionaire Bryan Johnson? The one for whom he is willing to compromise his diet! Bryan Johnson is dating Kate Tolo, a 30-year-old Australian woman. She is the first woman and second person to trial Blueprint, an age-reversing programme developed by Bryan Johnson.

She is the co-founder and Chief Marketing Officer (CMO) of Blueprint, Don’t Die and Immortals. She moved to New York at the age of 20 to become a fashion designer.

However, in late 2016, when she read about Johnson, she was drawn towards his motto. “And I thought, ‘Well, there he is, that’s the person I’m going to align myself with and really pour my energy into’,” Tolo told The Sydney Morning Herald. Four years after reaching out, in 2021, she heard back.

She joined him as his assistant. The couple announced their relationship in December 2025. Beyond being a supportive partner, Tolo has been a crucial force in the longevity movement that has captivated millions globally through the Netflix documentary ‘Don’t Die: The Man Who Wants to Live Forever’.Recalling how he met Tolo, Johnson earlier said, “Kate and I met at my brain interface company, Kernel. She’d discovered my work using neurotechnology to improve human well-being and merge humans and AI.

Even though she’d been dreaming of a career in fashion, she was drawn to what she foresaw as the defining question of our time: how will humans successfully co-evolve with AI? We shared the same obsession. The puzzle-piece fit was immediate, as immediate as either of us had ever experienced.

Yet we maintained our professional boundaries. When we worked on our first project together, the back and forth was effortless.

She could conceptualise and feel what I couldn’t, and vice versa. It helped that both Kate and I had a natural disposition towards hard work. Our joy came from creation.”The man also confessed to having butterflies in his stomach upon meeting her. “Kate was luminescent. When I saw her about the office, butterflies fluttered in my stomach. Each day she’d show up wearing some unexpected combination of colours, textures, styles and accessories.

Always tasteful, playful and interesting. She didn’t chase fancy brands. Most of her clothing was from the thrift store. It wasn’t how she looked but how her mind worked: original, eccentric, entirely her own.

She was art.”There is a reason why people call Kate Tolo the female Bryan Johnson. They are somewhat the same person. Even Johnson agrees with that. “We were from entirely different worlds, but somehow the same person.”Tolo is someone Johnson deeply trusts. “I trust Kate as much as my mother. She knows how to scaffold trust. She anticipates your anticipation and knows your reaction before you react. She’s meticulous in the integrity of our relationship. She’s even been pivotal in helping my father and me reconcile and navigate the contours of our relationship,” he said.Given that Johnson has met her parents, it’s certain that the relationship is serious. Kate Tolo has become Johnson’s most important collaborator—both in business and in life.