Carbohydrate is an essential food nutrient. When we consume too much carbohydrate, it suffers one of four fates: it is either used as an immediate energy source (such as a runner using Gatorade to increase glucose levels in the blood), stored as carbohydrate (in a form called glycogen), excreted (especially when it has a high fiber content), or converted to and stored as fat. The glycemic index (GI) is a measure of your body’s blood sugar response to eating carbohydrate foods and was originally developed for use by type II diabetics. Foods such as white bread and table sugar (sucrose) are at the top of the index, meaning that they have a value of 100. Eating these foods causes a sharp increase in blood sugar. With a sharp increase in blood sugar, comes a corresponding increase in the hormone insulin; the presence of insulin makes us prone to store food as body fat. A chronic high level of insulin, hyperinsulinemia, is associated with type II diabetes, most of America’s obesity, and even heart disease. So our goal is to keep our insulin levels moderate by ingesting moderate- to low-GI foods.
Typically, foods that break down soon after you eat them get a high-GI number, while those that take longer to digest get a low-GI number. That’s why a low-GI snack like cottage cheese and an apple will keep you from snacking again before dinner three hours later, while a couple of slices of white toast, or even worse, a bagel (which is also a calorie bomb), will soothe your hunger for only half that time or less. Going with low-GI meals helps your belly feel full earlier and stay full much longer, resulting in less overeating and better food choices. Because it doesn’t cause blood-sugar spikes, you also get a steady supply of energy. With two brothers who are type I diabetics, I can tell you that if they don’t have their regular small meals they get easily agitated, become irrational, and can’t focus on anything! This is also what happens to low-carbohydrate dieters.
Many of us are almost as strongly affected by the low blood-sugar phenomenon and may exhibit similar behavior when we’ve gone too long without food. Just as protein and fat bring the GI number
down, sugar increases it, which means that you must reduce your sugar intake if you want to lose fat. Not only does sugar contain many unnecessary calories, it raises your insulin levels and satisfies you only for a very brief period. You can’t fool your body into treating 100 calories worth of lollipops the
Typically, foods that break down soon after you eat them get a high-GI number, while those that take longer to digest get a low-GI number. That’s why a low-GI snack like cottage cheese and an apple will keep you from snacking again before dinner three hours later, while a couple of slices of white toast, or even worse, a bagel (which is also a calorie bomb), will soothe your hunger for only half that time or less. Going with low-GI meals helps your belly feel full earlier and stay full much longer, resulting in less overeating and better food choices. Because it doesn’t cause blood-sugar spikes, you also get a steady supply of energy. With two brothers who are type I diabetics, I can tell you that if they don’t have their regular small meals they get easily agitated, become irrational, and can’t focus on anything! This is also what happens to low-carbohydrate dieters.
Many of us are almost as strongly affected by the low blood-sugar phenomenon and may exhibit similar behavior when we’ve gone too long without food. Just as protein and fat bring the GI number
down, sugar increases it, which means that you must reduce your sugar intake if you want to lose fat. Not only does sugar contain many unnecessary calories, it raises your insulin levels and satisfies you only for a very brief period. You can’t fool your body into treating 100 calories worth of lollipops the