Since I don't have your problem (I'm on the OTHER extreme of eating behavior), I don't understand how you are knowledgeable about needing to eat to live, but not able to force yourself to eat even in the absence of appetite. But like I said, I haven't been there.
There are several medical reasons for appetite loss though mine is not listed:
https://en.wikipedia.org/wiki/OrexigenicWould marijuana work? Supposedly it gives people the munchies, but I've never tried it to find out for myself. I'm only half-joking here. Could it be grown in your garden as an appetite enhancer?
I was not sure I could mention this; that is one thing I considered and researched. In the research I have done, it has to be in pill form, not inhaled.
Jeanette Isabelle