In today’s fast-paced world, where abundance of processed foods are everywhere, many people unknowingly consume foods that cause dramatic fluctuations in blood sugar. Chronic fluctuations in blood sugar levels contribute to the rising rates of lifestyle diseases like diabetes and obesity. Hence, being mindful of what we eat has never been more important. One useful tool for making smarter dietary choices is the Glycemic Index.
What is Glycemic Index (GI)?
The glycemic index is a way that carbohydrates in foods and drinks are ranked according to how quickly they raise the glucose level of the blood. It has replaced classifying carbohydrates as either ‘simple’ or ‘complex’. In general, low GI foods increase glucose slowly in your body. Foods with a high GI increase blood glucose quickly. If you have diabetes, high GI foods can make it harder to control your blood sugar.
The role of the glycemic index in food choice
A glycemic index diet incorporates low-GI foods to promote several benefits, including:
Steady energy release: Consuming foods that release glucose slowly into the bloodstream helps maintain steady blood sugar levels. It is also important for individuals with insulin resistance or diabetes to prevent rapid blood sugar spikes.
Weight management: Low GI foods tend to be high in fiber, protein and healthy fat, help ones feeling full longer and reduce overeating. The longer-lasting fullness helps regulate appetite, lowering the risk of eating excess calories and supporting weight control.
Look out for limitations
Not all low GI foods are healthy. The limitation of the GI system is that it compares the glycemic effect of foods containing the same amount of carbohydrate, when realistically these foods are often consumed in different amounts. Glycemic index can only offer the value of components, rather than the entire meal. To account for this, the glycemic load can be used.
Glycemic load (GL) takes into account both the GI of a food and the serving size, providing a more accurate measure of the impact of a food on blood sugar levels. While GL is a more accurate measure than GI, it still has its limitations. It does not take into account the overall nutrient content of a food or the presence of other factors that can affect blood sugar levels, such as physical activity and stress.
By considering both the glycemic index and glycemic load, you can better avoid sudden spikes in blood sugar. However, for most people, focusing too much on GI and GL can add unnecessary complexity to food choices. In the next article, we’ll explain simple strategies for following a low-GI or low-GL diet.