What is the Glycemic Index?

>your diet.
Try to change the carbs you eat the most with at
Over the last 30 years, research into food and bloodleast one low GI one. (Replace potato with sweet
glucose response has completely changed ourpotato, use noodles instead of rice) By substituting half
carbohydrate classification system.of your daily carbohydrate from high GI to low GI will
It has been learned that it is impossible to predict theresult in an overall reduction in the GI of your diet.
impact on blood glucose levels by certain foods,Reducing the GI in your diet reduces your insulin levels
instead people are fed carbohydrate foods and theand increases the fat burning apparatus in your body.
response measured.Try to reduce the high GI's in your diet by substituting
This response is known as the Glycemic Index (GI), it isthem with low GI's.
a measure of how quickly carbohydrate foods areRegular consumption of low GI foods increases the
digested and absorbed, and ranks carbohydrate foodsfeelings of fullness and satisfaction and so prevents
according to their impact on blood sugar (glucose)weight gain. Try taking in six small meals a day of
levels: as indicted by elevated blood glucose.healthy low fat low GI foods to prevent overeating at
Foods with a high GI are absorbed quickly into themeal times and control appetite.
blood stream and cause a rapid rise in blood glucoseRemember, that it is also important to look at the
levels. While foods with a low GI are broken downcalories in food to. Rice and bread might be low in fat
more slowly over time and keep blood glucose levelsbut when your body is burning the carbohydrates in
more stable (Remember that low is slow!).these foods it doesn't burn as much fat. So if you are
Some carbohydrate foods will maintain your energyon a low fat diet, you wont lose as much weight if
levels for hours, while some may cause your bloodyour calories are still high.
glucose to rise and fall. Different types ofHave a look at the table below for the different GI
carbohydrate can also affect feelings of fullness in thefood ratings.
stomach and this can influence hunger and your abilityLow GI (<50)Medium GI (50-70)High GI
to control your body weight.(70>)Grapefruit (26)Pineapple (66)Cornflakes
Why is the GI important?(80)Baked Beans (15)Raisins (64)W/M Bread
When our blood glucose levels are stable we have(72)Lentils (29)Sweet corn (59)Brown Rice
plenty of readily available fuel for the brain and(80)Peanuts (13)Potato Chips (51)Carrots (92)Soy
muscles. If our blood glucose levels drop too lowBeans (15)All bran (51)Baked Potato (98)
(hypoglycaemia) we feel tired, dizzy and generallyCompare these two menus and try to adjust your diet
unwell. If our blood glucose levels rise too quickly aaccordingly.
rapid drop usually follows this.High GI Menu
Include low glycemic index foods in meals and snacksBreakfast: 40 Grams of cornflakes with milk. Two
to slow the release of glucose into the bloodstream. Aslices of whole meal toast with margarine and jam.
low glycemic index snack a few hours beforeSnack: Two sweet biscuits with a white coffee.
exercise will help maintain your energy levels for moreLunch: Ham and salad whole meal Roll with an apple.
effective training.Snack: Four crackers with cottage cheese and chives
After high intensity exercise (strength training) a highMain Meal: Serving of Roast chicken with a large
glycemic index snack should be consumed within 30baked potato and peas. Small piece of cake.
minutes. This will help to replace energy and start theLow GI Menu
recovery process.Breakfast: 40 Grams of bran with low fat milk. Two
Low-GI foods take longer to digest and help delayslices of low GI toast (Try Burgen) with margarine and
hunger pangs that little bit more and thus promotejam.
weight loss. So please choose your carbs carefully asSnack: Two oatmeal biscuits with a coffee (Low fat
this will lower your insulin levels and burn more fat. Themilk).
secret is to swap high GI foods with low GI foods.Lunch: Ham and salad Roll (Low GI bread). Soft-serve
Simple steps to a low GI diet.vanilla yoghurt with toasted muesli sprinkled on top.
Step No 1Snack: Two bananas.
Start with a healthy, well balanced and varied dietMain Meal: Serving of Roast chicken with a small
based on a good nutrition program. The diet should bebaked potato and peas. Two scoops of low fat ice
low in fats, moderate in carbohydrate and protein. Thecream with half a cup of canned peaches.
program should be high in fibre and contain a variedChicken, beef, fish, eggs, nuts, and avocados contain
amount of foods to provide the required amount ofvery little or no carbohydrates. These foods if eaten
vitamins and minerals.by themselves will not have much effect on your
Step No 2glucose levels and are very low GI. Alcoholic
Look at the type of carbohydrates that you consumebeverages especially wine are also low GI so can be
during the day. Look at the carbs that you eat theincluded in your diet but remember to count them in
most, as these will have the most dramatic impact onyour daily caloric intake.