My dh (75) no longer (last several years) likes hot foods like many Mexican style dishes. He can eat Asian "hot" though. He is a Filipino so maybe that's why but it has been difficult for me to understand. I will make a dish that is just slightly hot/spicy and he says no way...but then he will eat an Asian dish that is too hot for me and it is fine.
So far I haven't had any food changes other than I simply cannot eat as much or I will gain weight very very fast!