I actually put a huge amount of effort into trying to remain professional in the face of ongoing suspicion and hostility because I recognise that a lot of people have poor experiences with the medical and scientific fields - as have I.
I've lost count of how many times I've had my motives and ethics questioned in the last year, including multiple times by Cal, but I try as hard as I can to ignore it despite it being a particular sore point of mine due to the sacrifices I've had to make to keep my ethics intact and a family history of relatives being subjected to medical experimentation. I notice that three people gave the same warning about not replacing all meals, but I'm the only one he took offense to even though I'm also the only one who explained that I was basing that on people having done it before. So I wouldn't be shocked if a little bit of frustration starts to creep in eventually because I'm only fucking human and I get frustrated when people take offense to me trying to do a thankless job that I never wanted. One that you didn't want either, as I recall.
But no matter what people choose to think I'm going to keep doing my job, because I would rather make sure they have all the necessary information than let them put their health at risk because I'm scared that someone who's repeatedly shown they're never going to give me the benefit of the doubt might try to put the worst possible spin on my words. I might not be the perfect person for it but at least I'm willing to.