I can have some vegetables (yay salads! I love certain kinds of salads, have to be picky about dressings and toppings though), but at the very minimum meeting caloric needs is the core goal for me.
As far as infection goes, I've had many antibiotics over the years of different classes. I believe it's fungal (mayyyybe with a parasitic co-infection of some kind?) as that anti-parasitics/antifungals are the classes that seem to introduce the strongest response in me.
Also, I cultured some of the skin from my foot and it grew yeast, in great abundance! (not the most reliable test, but it works okay...ish, lol).
Additionally, I had the same systematic spike in pain in my leg when taking niacinamide originally as I did when surface-treating the fungal foot infection, which cleared up pretty rapidly underneath it.
Things like thujone/juglone/etc seem to be quite helpful too, though, so I do worry about a potential opportunistic parasitic component to it as well, as I seem to respond in some way to drugs in that class (even the ones potentially without apparent antifungal activity). Parasitic infections actually are quite common in the US compared to our expectations -- just look at pinworms or toxoplasmosis (even though it is quite low here in the US compared to the rest of the world)!
I think something that I've slowly been finding is hard about epidemiology is that immunocompromised individuals can be subject to a whole host of odd infections & etc in comparison to a standard, healthier population.