Kitsume wrote:
I had a mysterious death, was just standing there then I choked and died. When I revived, I noticed my health decreasing again and I had been empty on my hunger for some time. Eating a fish stopped the health loss, so I assume starvation is now active.
No.
You went to far out and went into the toxic area where you lose health over time. You died and were still in the area of toxic fog so you continued to lose health it was just coincidence that after eating you left the area so your health stopped draining.
If you do not eat or drink your stamina goes down however. But not your health at the moment at least.