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Patrick Stewart Dies After Lewy Body Dementia, Alzheimer's

healthOct 31, 2026·298 words·3 min read

Patrick Stewart, the English actor famous for his roles in "Star Trek" and "X-Men", died on Wednesday at his home in Los Angeles. He was 86. His family said he died surrounded by loved ones after a short illness with both Alzheimer's disease and Lewy body dementia (LBD). LBD is a brain disease that slowly gets worse, and the Mayo Clinic says it is the second most common type of dementia. It causes about 10 to 15 per cent of cases.

LBD happens when small clumps of a protein build up inside brain cells. These clumps damage the parts of the brain that control thinking and memory. People with LBD can make new memories, but they find it hard to remember them later. Their attention can change from hour to hour. People with LBD may also see things that are not there, and they can have stiff muscles or problems with balance. Some people act out their dreams in their sleep, years before other signs appear.

Doctors say LBD is hard to diagnose, or identify, because there is no clear test and it looks a lot like Alzheimer's. It usually starts after age 50, and it is a little more common in men. There is no cure, but medicine and special exercises can help with the symptoms. Finding it early helps people keep a better quality of life. The actor Robin Williams also had LBD. Doctors found it after his death in 2014.

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