My teeth feel sensitive even when I eat slightly cold food.

I didn't have this problem when I was young, but as I get older, this cold sensation seems to be getting worse. I tend to eat a lot of cold foods, perhaps because I have a lot of heat in my body. I only drink cold water and only have iced coffee. I also love ice cream so much that I keep it in the refrigerator and eat it. However, as the cold sensation worsens, eating my favorite cold foods becomes increasingly uncomfortable. I'm curious whether this cold sensation is a natural symptom of aging or if there are treatments that can help alleviate the symptoms.