Thursday, August 22, 2013

The Glycemic index Diet (GI)




Glycemic index diet is a general term for weight-loss diets that are based on your blood sugar level. Many popular commercial diets, diet books and diet websites revolve around the glycemic index, including Nutrisystem, the Zone diet and Sugar Busters.

The glycemic index measures carbohydrates. The index is a list of how blood sugar levels rise after you eat a small portion of a carbohydrate food.

Originally, the index was developed as a tool to help diabetics manage blood sugar control. In theory, if it works to help control blood sugar in diabetic people, then it should work for weight control.
Blood Sugar Imbalance
Some food is thought to disrupt this natural balance by creating large spikes in your blood sugar level. When your blood sugar and insulin levels stay high, or cycle up and down rapidly, your body has trouble responding and over time this could contribute to insulin resistance. Insulin resistance is associated with a host of health problems, including:

  • Type 2 diabetes
  • Obesity
  • High blood pressure
  • Stroke
  • Heart disease
  • What Is The Glycemic Index?
All carbohydrates increase blood sugar levels, but the effect varies widely. For example, a glass of orange juice will cause a much quicker rise in blood sugar than a bowl of oatmeal, which takes longer because of the type of carbohydrate and amount of fiber.

The response is affected by many factors, including the quantity of food, the amount and type of carbohydrate, the cooking method, degree of processing, and more.

On the glycemic index scale, each food is assigned an index number from 1-100, with 100 as the reference score for pure glucose. Typically, foods are rated high (greater than 70), moderate (56-69), or low (less than 55).





Most, but not all, foods on the lower end of the GI scale tend to be healthier, nutrient-rich, less processed, and higher in fiber -- such as whole fruits, vegetables, grains, and beans. Foods high in fiber can be very filling, especially when paired with protein.

One major concern with the glycemic index is that it ranks foods in isolation. But in reality, how your body absorbs and handles carbs depends on many factors, including how much you eat; how the food is ripened, processed or prepared; the time of day it's eaten; other foods you eat it with; and health conditions you may have, such as diabetes. 

So the glycemic index may not give an accurate picture of how one particular food affects your blood sugar. Glycemic load is a related concept that scores a food product based on both carb content and portion size. But the larger the portion size, the greater the calories consumed whether the glycemic index is high or low.

Beachbody, the creators of programs like P90x and Insanity have a great product called Shakeology, which ranks in the LOW Glycemic Index.

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