Hayden Panettiere Opened Up About Her Brother Jansen Years After His Sudden Loss — and the Guilt She Carried
Hayden Panettiere spent the final years of her life carrying the weight of a loss she never quite learned to put down. Now, following her own sudden death at 36, the actress’ deeply personal account of losing her younger brother has taken on an even more heartbreaking meaning.
Hayden Panettiere and her younger brother, Jansen Panettiere, grew up in Hollywood and both found their way into acting as children, according to their IMDb profiles.
According to ABC News, his final television role came in 2019, when he appeared as Casper, a member of the Hilltop Colony, on The Walking Dead. Away from acting, his artwork became an important way for him to express himself.
A few weeks before his death, Jansen even shared a playful glimpse of his relationship with his older sister. In January 2023, he posted a photo of Hayden cutting his hair, joking in the caption, “Not the first haircut she’s tried to give me.”
The post would become an unexpectedly poignant glimpse of the siblings together shortly before tragedy struck.
Jansen died in February 2023 at just 28 years old, leaving his family struggling to understand a loss that came without warning. In a statement to ABC News, the Panettiere family described Jansen as a warm, creative person whose personality lived on through his art and the memories he left behind.
“Jansen’s heart could be seen in his eyes, and his charm in his brilliant, engaging smile; his soul in his masterful and revealing paintings, and the joy of life in his dry wit,” the family said. They added, “His charisma, warmth, compassion for others, and his creative spirit will live forever in our hearts and in the hearts of all whom he encountered.”
The family also revealed what the medical examiner had determined about his death. “Though it offers little solace, the Medical Examiner reported Jansen’s sudden passing was due to cardiomegaly (enlarged heart), coupled with aortic valve complications,” they said.
At the time, the revelation gave the family an official explanation for Jansen’s sudden passing, even if it could not explain away the shock of losing him so young.
For Hayden, however, Jansen’s death was not something she simply left in the past. Two years after his death, she marked the anniversary with an emotional Instagram tribute, writing, “2 years ago today, I lost my little brother. This amazing human being touched the lives of so many. Especially mine.”
By September 2025, her grief was still unmistakably present. Hayden marked what would have been Jansen’s 31st birthday by describing him as “a remarkable human being” who was “wise beyond his years” and operated at “a higher spiritual level than anyone I’ve ever met.”
She wrote that she missed him every day but believed his spirit remained close to her family. “I love you to infinity and beyond, J, and we will be together again one day,” she wrote.