What happens to the carbs?

1: Carbohydrates, such as fruit and vegetables, bread, pasta… and, of course, less complex sugars – such as the stuff we sprinkle on cornflakes, that we call ‘sugar’, are all turned into simple sugars in the human digestive tract before entering the bloodstream.

2: If you keep eating carbohydrate the resultant simple sugars will, at first, be stored. The human body can pack away around 1,500 calories of sugar. However, once this limit is reached, the liver will turn the rest into fat.

3: The fat that is made in the liver is palmitic acid

4: The next step is that three palmitic acid molecules are attached to a glycerol molecule, to form a triglyceride.

5: These triglycerides will then be packed into Very Low Density Lipoproteins (VLDL) and released into the bloodstream. [Beware of confusion here. For VLDLs are also called triglycerides although, of course, they are not. VLDLs contain triglycerides but they are not the same thing – even if they are called the same thing].

6: When VLDLs reach fat cells (adipose tissue), the triglyceride is stripped out and absorbed into fat cells. Which means that VLDLs gradually shrink.

7: Once a VLDL has lost a large amount of triglyceride it becomes a new, smaller, lipoprotein, which is often referred to as ‘bad cholesterol’ a.k.a. LDL (Low Density Lipoprotein).

8: LDL is taken out of the circulation, primarily, by the liver. Some LDLs are removed from the circulation by other cells around the body that need the cholesterol contained in them.

9: As can be seen, the only source of LDL is VLDL.

What happens to the carbs is that they are all turned into saturated fat. This then raises VLDL levels and these, in turn becomes LDL. Yet eating carbs is supposed to be healthy, and eating saturated fat is unhealthy. Go figure.

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