The glycemic index (GI) is a food chart which tells you how quickly certain foods raise your blood sugar levels after eating them. This method of controlling blood sugar levels is still a bit controversial, and it's highly misunderstood too.
When you eat anything - meals, snacks, drinks, anything - your body responds. If you eat or drink something with high levels of simple, quick sugars, your body will respond by quickly showing a rise in blood sugar levels. In healthy people, the body will immediately release insulin to lower those blood sugar levels fast. In diabetics however, the high blood sugar levels can be dangerous. And most people who have problems with obesity or insulin resistance are prone to diabetes, so these problems apply to them too.
Now the whole premise of the Glycemic Index is to learn which foods raise your blood sugar quickly, which raise it at more moderate levels, and which raise it slowly. The slower your blood sugars rise after you'e eaten, the better you're able to manage, maintain and regulate your body's weight. Foods which raise your blood sugar more slowly also tend to help keep you feeling full and satiated for longer periods of time, and are often lower in fat or higher in fiber too.
The most common misunderstanding most people have with the glycemic index, is that they think they're supposed to only eat certain things and avoid other things. Most diets and eating plans work this way. The glycemic index however, is designed to help you make better eating choices, not tell you what to eat or not eat.
Most people also don't realize that there are conditions which can change the glycemic load of certain foods. Boiled potatoes for instance, have a GI rating which is lower than instant mashed potatoes. But if you mash those boiled potatoes with a fork, you've instantly created a higher GI food. And when you want to control your body's blood sugar levels either to lose weight or to manage specific health conditions, then lower GI foods are generally best.
Glycemic index ratings are also based on certain portion sizes. Many people for instance, think they're not supposed to eat carrots when using the Glycemic Index to control their blood sugar levels, because carrots have a GI rating of 71. But that rating is for cooked carrots only. Raw carrots have a much lower GI rating, and you'd have to eat an entire pound of raw carrots to get that large of a glycemic load from them.
Another example is pasta. Most people think they're not allowed to eat pasta when using the Glycemic Index to regulate their blood sugar levels, but this is not always the case. How well you cook your pasta will change the Glycemic Index rating for it. Undercooked pasta, also known as "al dente" pasta, has a lower GI load then pasta that is cooked until fully soft. Instant rice has a much higher GI rating than long grain or wild rice, and instant oatmeal has a higher GI rating than old fashioned cooked oatmeal. Even the differences in ripeness of a banana can dramatically change the glycemic load from eating that fruit.
8.11.2008
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment