What is the definition of glycemic index?FamilyPet
The glycemic index, or GI, is a ranking of different foods, according to how high they raise blood sugar levels after they are eaten. The foods are indexed from 0 to 100. Up until recently, the GI was only tested on humans, but most pet food companies assumed it was the same for animals and usually converted the glycemic index for pets when formulating food.
Low glycemic foods are digested slower than high glycemic foods, and the nutrients take longer to be absorbed by the body. This slow digestion means that an animal eating low glycemic carbohydrates will feel fuller for longer. This is an obvious advantage for weight loss.
It also means that blood sugar levels rise slowly, with little or no “crash” associated with high glycemic foods, mostly simply carbs. This is an advantage especially for the diabetic animal.
Just as with people, more and more pets are overweight and suffering from diabetes. Many pets also experience arthritis and other inflammatory diseases; research has shown time and again that inflammation is caused by high glycemic foods. In fact, Harvard Medical School, in a test, found that animals that ate high glycemic foods had a higher incidence of obesity and cardiac problems than those who didn’t.
Corn and wheat are something both obese and diabetic animals should avoid and, unfortunately, these are often items in pet food, especially the lower-quality store brands. You need to read labels carefully, therefore.
Low glycemic pet foods use peas, lentils, barley, alfalfa and even apples as their source of carbohydrates. These carbs are absorbed slowly by the digestive system, and only score half as high on the GI.
Sometimes, though, a food can be high glycemic, yet healthy. Examples are rice and potatoes, often a staple of pet foods, do score high on the GI, they are seen as healthy items, to be avoided only if the animal has a problem.
The best thing to do is consult with your veterinarian.