Why is food different from one another?

Answer 1

by causation or consequence: I will address consequence. People distinguish food by taste and smell, and smell requires the help of the amygdala that is in the deeper part of the brain (primitive function). So eating is correlated back tothe brain as an emotional experience as well! :)

There is a bulb in the upper part of the face that is attached to the brain that is wired back to the amygdala, which probably hits other sensory area as well.

Both the aromas though the mouth up to the nose and also through the taste buds are linked to the ulfactory bulb--and this IS a brain part, much like a retina is a brain part.

So eating and tasting food is a direct brain function. :)

Also many of your sensor cells are associated with skin's somasensatory cortex. So whatever you eat, do, or even think is somehow touches off onto the skin, interesting eh? So the skin is the "brain" removed. This is why people have phantom arms when they lose their arms because the brain also associates function by proximation, the closeness of one part of the brain that works the head is right next to the brain part that works (motoro and sensory) the arms. So even though the arms are gone, the compartment next to the arms compartment in the brain is still sending signals because it still works. In this cause, proximation rules over "reality" that the arms are no longer there.

We are nothing but walking brains. :) LOL (and this is just the CNS, central nervous system and not the ANS, the autonomic nervous system such as when you touch something hot and your body pulls away from it, which does not use the brain until afterewards, which tells the brain, "Oh, by the way, you just were burnt." Then you start feeling the pain and see the redness and the swellig. :) Or when the doctor hits your knee with the soft hammer--this is invoking the ANS.