Would you like a piece of birthday cake?
No, thanks, I'll pass. It looks very tempting though.
I thought strawberry cake with cream cheese frosting was your favorite?
It is. I'm on a diet and strawberry cream cheese cake is not on it.
A diet? What for? You are in great shape.
I went to the doctor the other day. My cholesterol is up.
Oooo. This sounds serious.
Not too serious. But he gave me a strict diet to help bring it down.