09.11.2014 Views

Eating Well - Beaming with Health

Eating Well - Beaming with Health

Eating Well - Beaming with Health

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Carbohydrates: Fael and Fibre 23<br />

Complex carbohydrate no. 2: Glycogen<br />

Glycogen is the second type of complex carbohydrate. It is<br />

how the human body stores glucose. Sometimes called<br />

'animal starch', glycogen does not occur in plants. We store<br />

most of it in the liver (up to 400 grams) as well as in the<br />

muscles (up to 100 grams). Glycogen is stored as ready<br />

energy. Like going to the store for food, if insufficient glucose<br />

is available from the bloodstream, it can be obtained by<br />

breaking down stored glycogen.<br />

Complex carbohydrate no. 3: Ffbre<br />

The third type of complex carbohydrate is fibre (also see<br />

fibre, page 29). At first glance under the microscope, fibre<br />

looks very similar to starch - a large group of glucose molecules.<br />

Upon closer examination the dissimilarity becomes<br />

apparent: the bonds holding the glucoses together in starch<br />

are different from the bonds holding the glucoses together in<br />

fibre. Humans don't possess the specific enzymes to untie<br />

these bonds, so the fibre continues down the digestive tract<br />

undigested. Cows and other animals have these enzymes in<br />

their rumen which explains why a horse can enjoy a square<br />

meal of hay and we can't.<br />

Glycaemtc index<br />

The glycaernic index is a ranking of foods based on their<br />

immediate effect on blood sugar levels. The greater the<br />

index, the quicker and higher blood sugar levels rise.<br />

Glucose is the gold standard at 100. Blood sugar levels<br />

are important for many things, including brain function,<br />

energy levels, insulin production and mood.<br />

Not all sugars are created equal. Glucose readily<br />

crosses over the intestinal wall into the bloodstream.<br />

The other single sugars vary in the speed at which they

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!