The Old Man and The Doctor

An old man visits the doctor and after thorough examination, the doctor says,

Doctor: I have a good news and a bad news for you, what would you like to hear first?

Old man: Well, give me the bad news first.

Doctor: You have cancer, I estimate that you have 2 years left.

Old man: Oh no! Only 2 years left. What kind of good news you will give me after this?

Doctor: You also have Alzheimer. You will forget everything I told you.