Why is loss of appetite a symptom of illness, if you need energy to recover?
In: Biology
Others have answered very well, but to add to it: your immune response is VERY callous. It will straight up kill you. It can starve you, like you said, it can raise your body temperature high enough to kill you, it can swell your throat so much you cant breath. Most of the symptoms you associate with having a disease are things your immune response is doing to you, to try and cure you.
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