Why is loss of appetite a symptom of illness, if you need energy to recover?
In: Biology
A lot of illnesses of the gi tract – poisoning/infection cause nausea and lack of appetite to convince your body to get rid of whatever the problem is.
Many other illnesses can trigger this same pathway despite having nothing to do with the digestive system. Common example – motion sickness is your vestibular (inner ear) system mismatching your vision – telling your brain that something is out of whack – and that *something* would likely only happen if you were poisoned. Your body convinces your digestion to want to vomit because of the inner ear. Lots of other illnesses can trigger this or a similar response.
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