Jesse Jackson’s family and organizations close to him have confirmed that he died peacefully at home in Chicago at the age of 84, but they have not publicly disclosed an exact medical cause of death as of mid‑February 2026. Reports consistently note that he had long‑standing, serious neurological illnesses — he was diagnosed with Parkinson’s disease in 2017 and later with progressive supranuclear palsy (a rare neurodegenerative disorder) and had been hospitalized for that condition in late 2025 — so his death is being reported in the context of these health struggles, even though no official cause has been specified.