I dealt with chronic nausea and weight loss for most of my life before going on testosterone. People thought I was anorexic or on drugs or something, but usually I just didn't want to eat. I was often light-headed, and I was so thin that when I got pregnant and later breastfed I had to work really hard to get enough calories and decent nutrition. Other than the fact that I wasn't ever hungry unless I was very happy and felt safe, I have no clue why I was like that. Now, on testosterone, I'm actually still the same way - not able to eat when I'm nervous or sad - but food hits me so hard that finding enough calories is no longer an issue. And I'm generally more happy and stable than I've ever been, and that makes it easier to seek and enjoy food.
I'm sorry I don't have any advice for you, but I wish you the best of luck. I will say I did not have any liver problems or food allergies upon testing.