(I) Carbohydrates are a vast and diverse group of
nutrients found in most foods. (II) This group includes
simple sugars and complex forms such as starches,
which are broken down during digestion to produce
simple sugars. (III) In contrast to the other
carbohydrates, fibre is a type of complex carbohydrate
that cannot be readily digested by our bodies. (IV) The
main function of the simple sugars and starches in the
foods we eat is to deliver calories for energy. (V) The
simple sugar glucose is required to satisfy the energy
needs of the brain, whereas our muscles use glucose
for short-term bouts of activity.