Prince Frederik of Luxembourg, known for his resilience and advocacy, passed away at the age of 22. Diagnosed with a rare mitochondrial disease as a teenager, he dedicated his life to raising awareness and supporting research efforts. Despite his health challenges, he remained a source of inspiration through his unwavering optimism and determination. To remember his legacy, here are four things to know about the late prince.
Facts About Prince Frederik of Luxembourg
1. He was the youngest son of Prince Robert and Princess Julie of Luxembourg.
Born into the Luxembourg royal family, Prince Frederik was the son of Prince Robert and Princess Julie, and sibling to Prince Alexander and Princess Charlotte. His upbringing was one of esteem, but it was also marked by immense challenges due to his health. Despite these struggles, Frederik was known for his humor, warmth, and intelligence, qualities that endeared him to family and friends alike.
2. He was diagnosed with PolG mitochondrial disease at 14.
Frederik’s life changed when he was diagnosed with PolG mitochondrial disease at the age of 14. According to the POLG Foundation, this genetic disorder gradually deprives the body’s cells of energy, leading to progressive organ dysfunction and failure. His condition required constant medical attention, yet Frederik remained determined to live as fully as possible.
3. He founded the POLG Foundation.
Understanding the urgency of research and the need for greater awareness, Frederik co-founded the POLG Foundation in 2022. As creative director, he played a key role in designing its website, logo, and branding. His efforts extended beyond awareness—he participated in medical research, including trials aimed at finding treatments for PolG disease. He also launched MITO, a clothing line that combined fashion with advocacy, using it as a platform to raise funds and spread knowledge about mitochondrial disorders.
4. He passed away on March 1, 2025.
Prince Frederik passed away in Paris on March 1, 2025, at the age of 22. His father, Prince Robert, shared a heartfelt statement on the POLG Foundation website, revealing that Frederik spent his final moments surrounded by loved ones.
On February 28, which coincided with Rare Disease Day, he called his family into his room to say goodbye. Even in his last moments, he maintained his characteristic wit and grace, offering his family words of wisdom and one final joke to lighten the room. His father described him as a “superhero” whose strength and determination continue to inspire many.
Though Frederik’s life was cut short, his legacy endures through the foundation he built, the awareness he raised, and the lives he touched. Rest in peace, Prince Frederik.
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