Should I tell my wife that I'm worried about her health?
How do you feel about her health?
I feel like this is a very urgent matter.
It's okay to be worried about someone else's health, especially your wife. Just make sure that you are not lecturing her on her lifestyle, and be ready to support her with whatever help she needs.
I don't like when my wife's health is in danger.
I think it is good to pay attention to your partner's well being and talk to them if you have concern.