That Alzheimer rumor was making the rounds long before Ron Jr. wrote his book. Supposedly in the oval office the President was more comfortable getting lost in stories about Hollywood and his heyday as an actor than talking about State matters.
I think Michael should cool it. What does it matter now? The people who despised Reagan will still despise him and the right wingers who loved him and his Reaganomics and "ketchup as a vegetable" and the "Russians are bombing" will go on loving him no matter the facts.