Italian fitness influencer, Alessandro Antonicelli, passed away on December 4, 2025, at the young age of 26. He suffered years of health troubles before succumbing to it. The social media personality did not give up and fought the ailment head-on till his last breath. Alessandro’s death left his family, friends, and loved ones heartbroken. The news of his passing was shared through a poignant message on his Instagram account. Following that, Alessandro has been receiving an outpouring of condolences. His fans hoped that he would find peace after a tough battle with a rare disease. Here’s everything we know about the circumstances that led to his death.
What was Alessandro Antonicelli’s cause of death at 26?
Alessandro Antonicelli died due to complications from cancer. He had been battling the disease for two years. Despite the physical challenges, he remained dedicated to fitness influencing. He was diagnosed with chondroblastic osteosarcoma, a type of malignant bone tumor, in August 2023. He broke the news by sharing photos from the hospital, captioning them, “Mental strength is the most powerful weapon of all.” He shared that his cancer was a rare type, which only affected 0.2 per cent of the population (two cases per million people).
