The rate at which people metabolize food is based on the amount of…

Well everyone had different metabolism rates, healthy people have a faster rate and not so healthy people have a slower rate. They can also get the fast/ slow rate from their parents. Anyone's metabolism can change based on how healthy they are. So that rate at which people metabolize food is based on health.
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muscle and fat in body hope this helps:)

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The reason being is because  antibiotics do not work for viral infections.  i hope this ! have a great day!