Dr. Jaffe Clinical Pearls

 

Importance of Knowing the Glycemic Load

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For Effective Metabolic Management -

Know the Glycemic Load 

The term "glycemic index" is commonly used by healthcare professionals and patients alike.  In contrast, the term "glycemic load" is heard much less often.  Most patients, and many practitioners, are not familiar with the term or don't fully understand the difference between the two. When helping guide patients through the various metabolic conditions, it is important that the practitioner understand and can explain the difference between glycemic index and glycemic load.    

What is the difference?

Glycemic index (GI)is a measure of the effects of
carbohydrates on blood sugar levels. Carbohydrates that break down quickly during digestion and release glucose rapidly into the bloodstream have a high GI. Foods like white bread, with high amounts of refined carbohydrates, are high GI foods and cause rapid rises in blood sugar levels.

A GI of 70 or more is high, a GI of 56 to 69 is medium, and a GI of 55 or less is low.*


The glycemic load (GL) is another way to assess the impact of carbohydrate consumption.  The glycemic load takes the glycemic index into account, but gives a more complete picture than glycemic index alone. While a GI value depicts how rapidly a particular carbohydrate turns into sugar, it does not  tell you how much of that carbohydrate is in a serving of a particular food . You need to know both things to understand a food's effect on blood sugar. The GL shows how much of that kind of carbohydrate is in the food, thereby giving a better sense of the food's total glycemic impact.  A fine example is watermelon; it has a high GI ( 72), but because of the low amount of 'available carbohydrate', its GL is relatively low (4).

A GL of 20 or more is high, a GL of 11 to 19 inclusive is medium, and a GL of 10 or less is low.*

 
Fiber and Available Carbohydrate
The presence of dietary fiber in a food reduces the 'available' or 'net' carbohydrates.  While the GI gives you an idea of glycemic impact for a particular carbohydrate, it wouldn't accurately reflect the lower glycemic impact of a food with low 'available' carbs.  By encompassing variables like 'available carbs', the GL provides a more complete, measure of true 'meal-like' glycemic impact.  Because of the the more practical application of the GL measure, low Glycemic Load meals are often recommended for diabetic control and weight loss.

Give your patients a delicious whey to manage weight and maintain healthy blood glucose levels. 
 
Packed with 15 grams of 100% native whey, over 10 grams of fiber, and only around 150 calories PERQUE Whey Guard is the ideal low glycemic load meal. The perfect substitute for higher calorie less healthy meals. 
 
Read below for details of the PERQUE Whey Guard glycemic response study. 

 

 

* Kaye Foster-Powell, Susanna HA Holt, and Janette C Brand-Miller International table of glycemic index and glycemic load values: 2002, Am J Clin Nutr 2002;76:5-56.


 

PERQUE Whey Guard Glycemic Impact Study

 

To understand the impact of PERQUE Whey Guard on blood sugar levels, 14 individuals were studied on 2 different days.  On each of the study days, each individual's glucose response was measured at 7 time points within the span of 2 hours.   On day one, the glucose response was measured after individuals consumed 50 grams of carbohydrates in the form of white bread+jam.  On day two, the glucose response was measured after consumption of an equal amount of carbohydrates from PERQUE Whey Guard

The figure below clearly shows the differences in glycemic responses after consuming an equal carbohydrate amount ( 50g)  of white bread+jam and PERQUE Whey Guard.

The sharp spike in blood glucose values noticed after white bread and jam is testament to the fact that consumption of such refined carbohydrates can take a toll on the body and herald the onset of insulin resistance, conditions like Type 2 diabetes and cardiovascular disease*.

It is evident that PERQUE Whey Guard, with a low glycemic load of <10, is able to maintain a gentle rise from the fasting blood glucose level and slowly returning to the normal resting level.  

GL Graph from postcard


 

 

  

* Kaye Foster-Powell, Susanna HA Holt, and Janette C Brand-Miller International table of glycemic index and glycemic load values: 2002, Am J Clin Nutr 2002;76:5-56.

NEW PERQUE Whey Guard is an effective and delicious tool to help your patients with metabolic issues.  If you have not yet ordered PERQUE Whey Guard, ask us about our introductory offer.
 
To order PERQUE Whey Guard, please call 1-800-525-7372 or email us at
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