Nutrition Tablets: Can We Replace Food?

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Why can't we replace food with equivalent nutrition tablets, and/or injection?
 
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jobyts said:
Why can't we replace food with equivalent nutrition tablets, and/or injection?

I think you probably could. But who would want to?
 
DavidSnider said:
I think you probably could. But who would want to?

Astronauts?
 
jobyts said:
Why can't we replace food with equivalent nutrition tablets, and/or injection?
Doctors can give patients intravenous food (parenteral nutrition), so your question is not correct.