The Chemistry of Weight Loss #2: Our body’s fuel system

Yesterday we looked at the chemistry of fat. Elsewhere, we have looked at the chemistry of carbohydrates

So which one does our body use?

Our body is a complex reactor which is capable of converting  fuel into energy. rather like our car. If we want our car to run, we have to put the right fuel in.  If we have apetrol car  and we put diesel in, for example,  it won’t run.

In just the  same way,  how body has a fuel system . Now it’s not quiet  as simple as that ,as our body  actually has several fuel  systems ,but there is one major  system that  dominates all others  that will look  at  today.  Essentially, our  body runs on  glycogen .

Glycogen is the  simplest  carbohydrate , and is what any complex carbohydrate must be broken  down  into  in order to act as a fuel . As I have discussed elsewhere,  if the glycogen is coming from  complex carbohydrates, then  this is a simple  process,  as simple as breaking a Lego  structure  into individual blocks. This process  can happen quickly  and it is the fuel that  our body uses most of the time,  particularly when doing anything at  all energetic.

Under sustained periods of exercise ,if how  body runs out of  complex carbohydrate,  it runs out of glycogen ,and this process is called going  “to the wall “. This is something experienced by marathon on runners for example.  And it’s the kind of thing  you experience if you skip  breakfast and lead a  busy morning.  By the time lunch rolls round,  you are very lethargic.

So the  lesson is,  that most of the time we are running on  glycogen.

This means that if we run out  of complex carbohydrate , our body must manufacture glycogen from somewhere else , and this is where it becomes complex,  and also represents ana opportunity for  weight loss.