It could be that, no matter how often she says that she's fully responsible for her weight, she sees herself as a dainty diva trapped in a fat body. She gets frustrated with her audience because we can't do what she does - see past that body to the witty, brilliant, fashionable, quirky, popular & lovable darling that she tries so hard to project. When we don't see it, it's easier on her self image to blame us for our lack of vision & our unwillingness to judge her on INTENT rather than action & results. If we can't see her as she sees or desperately wants to see herself, that's on us, thus the contempt towards her audience that seems to be her default position.
She has too many flaps & folds, nooks & crannies not constantly have at least a few skin infections at any point in time; that's my belief. Her immune system deserves a Medal of Honor for actions above & beyond. It's an easy analogy to think of her immune system as an army & as Napoleon famously said: "An army marches on its stomach." Modern militaries focus on the support 'tail' it takes to keep the 'teeth', (actual fighters), functioning & effective. That tail consists of al the support functions necessary & Generalissimo Amber has no concept of what's needed to keep her immune system working FOR her. The transport systems, (blood & lymphatic systems), are clogged with cholesterol, squeezed together by fat & have too much area to cover. Her 'soldiers' aren't being properly fed; too much salt, sugar & the wrong fats & you can't convince me her vitamin/mineral counts are anywhere near where they should be.
Enough of that analogy save for 1 last point. It may be that now or very soon, she'll be 'asking' her immune army to fight on too many fronts & it will essentially collapse. Recently she's had both a UTI & cellulitis & although we don't know that's the case, it seems at least her cellulitis cleared up - for now. I think she'd have looked worse & admitted to more serious symptoms had that not been the case. The ongoing UTI, (if she's not lying about that), is bad enough but any added infection, no matter how seemingly small at first, could be the tipping point & there's no way she has the physical reserves to handle much more.
Health-wise, I think this coming year we're going to see more infections, or signs of them if she doesn't admit to them. There will be more ER and doctor visits, more antibiotics as she continues to act against her own best, long term interests. Time is not on her side.