Comment by hackeraccount

The analogy isn't a perfect one.

For Climate Change it's a question of opportunity costs. With expected inputs how much will temperature change? What are the effects of that change? How much effort to you put into changing the inputs? How much effort do you put into dealing with the effects?

The biggest difference is that Climate Change is a deeply political question with a bit of science tossed in. Alzheimer's is the mirror opposite - it's a scientific question with politics added to the same degree of most other things.