In his latter years, Williams’ health began to deteriorate. On set, the guy who could learn hundreds of lines by heart and never make a mistake began to struggle with memory. Regretfully,
it caused him a tremendous lot of frustration and distress. According to Fox News, his son Zak remarked,
“It was a period for him of intense searching and frustration,” in an interview with Max Lugavere on the podcast The Genius Life. “It is simply heartbreaking.”
Susan Schneider Williams, William’s wife, also spoke about the actor’s incorrect diagnosis. “After reviewing his data, I met with four physicians who said this was one of the worst diseases they had ever seen.
She stated for Neurology that “he had about 40% loss of dopamine neurons and nearly no neurons were free of Lewy bodies throughout the entire brain and brainstem.”
Prior to his death, Susan talked about how Williams’ health deteriorated and how nobody knew what to expect next. It all began with the actor having heartburn,