Made some diet changes, but not because of surgery. There I had good recovery.
I have to eat frequently in small portions to try to keep the blood sugar stable (insulinoma). No alcohol either, Still it spikes at times and crashes at night, or during exertion if I don't pause to eat or drink something.
The oral chemo I'm on has caused me to leave out spicy foods. They make me feel like my mouth is on fire. Also I'm supposed to avoid grapefruit.