Some
people think metabolism is a kind of organ, or a body part, that
influences digestion.
Actually,
the metabolism isn’t a body part.
Metabolism,
is the process of transforming food (e.g. nutrients) into fuel (e.g.
energy). The body uses this energy to conduct a vast array of
essential functions.
In fact,
your ability to read this page is driven by your metabolism.
If you
had no metabolism you wouldn’t be able to move.
In fact,
long before you realized that you couldn’t move a finger or lift
your foot, your internal processes would have stopped, because the
basic building blocks of life – circulating blood, transforming
oxygen into carbon dioxide, expelling potentially lethal wastes
through the kidneys and so on – all of these depend on metabolism.
Although
we think of our metabolism as a single function, it’s really a
catch-all term for countless functions that are taking place inside
the body. Every second of every minute of every day of your life
numerous chemical conversions are taking place through metabolism, or
metabolic functioning.
In a
certain light, the metabolism has been referred to as a harmonizing
process that manages to achieve two critical bodily functions that
seem to be at odds with each other.
Our
bodies are continually creating more cells to replace dead or
disfunctional cells. For example, if you cut your finger, your body
starts the process of creating skin cells to clot the blood and start
the healing process instantly. This creation process is a metabolic
response, and is called anabolism.
On the
other hand, there is the exact opposite activity taking place in
other parts of the body. Instead of building cells and tissue the
body is breaking down energy so the body can function.
For
example, as you exercise, your body temperature rises and your heart
beat increases. As this happens, your body requires more oxygen, so
your breathing increases. If your body couldn’t adjust to this
enhanced requirement for oxygen, you would collapse. And all of this
requires additional energy.
Presuming
that you aren’t overdoing it, your body will begin converting food
into energy in a metabolic process called catabolism.
Your
metabolism is a constant process that works in two seemingly opposite
ways: anabolism uses energy to create cells, and catabolism
breaks down cells to create energy.
The
metabolism is a harmonizer. It brings together two seemingly opposite
functions, and does so in an optimal way that enables the body to
create cells as needed, and break them down, again as needed.
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