He ate fat and died of mucus in his lungs? I don't see the relation here...or did you mean plaque in his arteries?
And if you have progressed with time, embraced a healthier lifestyle then please adapt to a healthier attitude too. Just because you think she might cook you fatty foods you want to reject her? Well then you can prepare your own meal now can't you sweetheart? She will be too busy as a dentist anyway.
I already cook my own food but whats the point cooking and doing your own chores when you have a wife?:)