Michael Bolton's brain cancer treatments have impacted his short-term memory, speech, and mobility. He was diagnosed with an aggressive glioblastoma back in December of 2023 when he had emergency surgery. Michael had a second surgery in January of last year, and finished radiation and chemotherapy last October. His latest brain scan last month came back clear. He has them done every few months since the recurrence rate is about 90%. He said, quote, "Succumbing to the challenge is not an option.