Jack Nicholson Health 2024 Health. Jack has been diagnosed with dementia and a source says that he is doing. People looks at what jack nicholson, who celebrates his 87th birthday on monday, april 22, has been up to since last appearing in a movie back in 2010.

Jack nicholson, spike lee and billy crystal are being recognized as basketball superfans. Actor living out his ‘sad last days’ amid dementia fears.