Carbohydrates
Carbohydrates are organic compounds
which may be simple and complex. It include
sugars and starches. All carbohydrates are eventually broken down into glucose
which is absorbed and utilized by the body in various ways. Glucose is required
by red blood cells and is the main source of energy for the brain. It is also
essential for the oxidation of fat and for the synthesis of certain non-essential
amino acids. Simple carbohydrates like sugar and sugar enriched food is broken
down easily and soon absorbed into the blood stream whereas complex carbohydrates
like starches take longer time to be broken down by digestive enzymes hence providing
a slower and more gradual supply of glucose. Carbohydrates are the
primary source of energy which provide about two-thirds of an individuals total
energy needs. Sugars are found in glucose (its basic form) and sweets, biscuits,
chocolates, pastries, honey, fruits etc. Starches are found in a wide range
of foods including cereals, grains, pulses, bread, beans, potatoes, other vegetables
and fruits which are far more useful as they contain accompanying fibre, vitamins
and minerals. It is sensible to eat more starch rich foods as excess sugar
rich foods may lead to obesity, high blood sugar, tooth decay and a possible increased
risk of developing diabetes in later adult life.The percentage of calories
derived from carbohydrates should be at least 40% in well balanced diets. But
this consumption differs country wise depending on the difference in diets.
While in developing nations it is as high as 60-70%, it is 40-50% in Europe and
30-40% in USA. |
|