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Glycemic Index

The field of nutrition is awash with charts, tables, diagrams, models, acronyms, and abbreviations; more than the average person can memorize. As such, one often comes across someone who has simply burnt out trying to keep track of how much to eat, when to eat it, how to find the calories from fat, the RDI, the DV, and so on.

Yet every once in a while, a concept within the nutrition field emerges that truly demands attention. Over a decade ago, the USDA’s “Food Pyramid” was one such concept because it helped eaters discover how many gaps existed in their typical daily diet. Now, as the Food Pyramid begins to take a new shape, and as the nutrition field works to establishes itself as the most important branch of health care in the 21st century, an invention called the Glycemic Index is taking center stage.

The Glycemic Index (GI) is not new; it has been around for more than 2 decades. Yet until recently, its exposure beyond the world of diabetes has been limited.

The Glycemic Index indicates how “high” or “low” blood sugar levels change in response to carbohydrate intake. A “high” Glycemic Index indicates carbohydrates with a swift breakdown, whereas a “low” Glycemic Index indicates carbohydrates with slow, gradual breakdown. Both terms are of equal importance to diabetics, because there are times with high Glycemic Index foods are required, and times where low Glycemic Index foods are required.

Indeed, the Glycemic Index itself is not new, but its application far beyond the borders of a diabetic dialogue is notable; especially for dieters.

The plain truth is that many dieters have been oblivious to the Glycemic Index, and hence, to the fact that many of the diet foods they have eaten – or are eating right now – score very high Glycemic Index levels. As such, these foods are providing a quick boost to blood sugar levels, and then setting up the dieter for the inevitable fall. This is because high GI foods typically increase blood sugar values, which in turn trigger the hormone insulin to clear sugar from the blood. Since blood sugar (a.k.a. glucose) largely dictates the body’s energy levels, it stands to reason that this process manifests as an initial boost in energy, and then as a depletion of energy. This rise and fall of blood sugar – and energy – is often described by dieters using a “roller-coaster” analogy: one minute they feel confident and strong, and the next, they are about to pass out and require some kind of stimulant in order to make it through the day.

Regrettably for many dieters, that stimulant is usually more high Glycemic Index foods, such as sugary snacks or soft drinks. It is easy to see how this experience can lead an individual to stop dieting. After all, before the diet, the individual was merely gaining weight. On the diet, the individual is gaining weight and is exhausted for most of the day. It is better to quit the diet.

Despite the growing awareness that low Glycemic Index foods are beneficial, the world of diet foods has not kept pace. This is because many manufacturers are searching frantically to find low Glycemic Index carbohydrates sources for their products, and overlooking a basic, simple fact: the lowest possibly Glycemic Index is no carbohydrates at all.

Currently, only a handful of nutritional supplements are designed to offer zero carbohydrates and thus score as low as possible on the Glycemic Index. And of these zero-carbohydrate products, even fewer offer a rich source of complete protein that effectively helps counter the blood sugar spike impact of high Glycemic Index foods.

Drew Voight