Glycemic this and glycemic that. Does it matter?
You’ll notice that they both begin with “glycemic.” That’s one tip that they have to do with sugars and carbs. Not only how much sugar is in foods, but more importantly, how it affects your blood sugar levels.
In general, diets that are high on the glycemic index (GI) and high in glycemic load (GL), tend to increase the risk of diabetes and heart disease.
FUN FACT: Starches like those in potatoes and grains are digested into sugar; this is because starch is just a bunch of sugars linked together. Digestive enzymes break those bonds so that the sugars become free. Then those sugars affect your body the same way that eating sugary foods do.
Glycemic Index (“how fast”)
The most common of the two terms is “glycemic index” (GI).
As the name suggests, it “indexes” (or compares) the effect that different foods have on your blood sugar level. Then each food is given a score from 0 (no effect on blood sugar) to 100 (big effect on blood sugar). Foods that cause a fast increase in blood sugar have a high GI. That is because the sugar in them is quickly processed by your digestive system and absorbed into your blood. They cause a “spike” in your blood sugar.
In the glycemic index, glucose sets the baseline at 100. From there, the lower the number, the slower it absorbs. Foods rated 70 or above are considered High GI. Examples include corn flakes, white bread, and many other refined flour baked goods. Foods rated between 56 and 69 are considered Medium GI. This includes raisins and bananas. Anything rated 55 or less is considered Low GI. This includes most veggies and fruit, nuts, seeds… and all seven flavors of Shakeology.
Remember, this is a measure of how fast a carbohydrate containing food is digested and raises your blood sugar. It’s not a measure of the sugar content of the food.
How the carbohydrates in food affect your blood sugar level depend on other components of the food. Things like fiber and protein can slow the release of sugar into the bloodstream, and this can make even a high-sugar food, low on the GI scale.
So, lower GI foods are better at keeping your blood sugar levels stable because they don’t increase your blood sugar level as fast.
Glycemic Load (“how much”)
The glycemic load is different.
Glycemic load (GL) doesn’t take into account how quickly your blood sugar “spikes”, but it looks at how high that spike is. Basically, how much the food increases your blood sugar.
GL depends on two things. First, how much sugar is actually in the food. Second, how much of the food is typically eaten.
Low GL would be 0-10, moderate GL would be 10-20, and high GL would 20+.
Example of GL and GI
So, let’s compare average (120 g) servings of bananas and oranges:
|
Food |
GI | Serving size (g) |
GL per serving |
| Banana, average |
48 |
120 |
11 |
| Oranges, average |
45 |
120 |
5 |
Excerpt from: Harvard Health Publications, Glycemic index and glycemic load for 100+ foods
As you can see, the banana and orange have almost the same glycemic index.; this means they both raise your blood sugar in about the same amount of time.
But, the average banana raises the blood sugar twice as high (11) as the orange does (5). So, it contains more overall sugar than the same amount (120 g) of orange.
Of course, this is all relative. A GL of 11 is not high at all. Please keep eating whole fruits. 🙂
What does this all mean for your health?
Certain people should be aware of the effects that foods have on their blood sugar. People who have diabetes or pre-diabetes conditions like insulin resistance need to be aware of the glycemic index and glycemic load of foods they are eating regularly.
The GI and GL are just two factors to consider when it comes to blood sugar. Some high GI foods are pretty good for you but if you want to reduce the impact on your blood sugar, have them with a high-fiber or high-protein food. The GI and GL can also be impacted by cooking method and re-heating.
Conclusion
If you have blood sugar imbalances or diabetes, you should probably be aware of the GI and GL of your food.
If you are at risk of diabetes or heart disease, you might try swapping out some higher GI/GL foods and replacing with lower GI/GL foods.
Oh, and try this low GI recipe we have for you.
Want to learn more?
Most people know that regular movement, eating well, sleep, and stress management are important for looking and feeling better. Yet they need help applying that knowledge in the context of their busy, sometimes stressful lives.
That’s why we work closely with ExecLevel Wellness clients to help them improve their health… no matter what challenges they’re dealing with. We believe that how you feel greatly impacts your ability to lead and age well in all areas of life.
Clean Week starts soon!
Recipe (low GI): Mediterranean Salad
Serves 2
- 1 cucumber, chopped
- ½ cup chickpeas, drained and rinsed
- ½ cup black olives
- ¼ red onion, diced
- ½ cup cherry tomatoes, halved
- ¼ cup extra virgin olive oil
- 1 tbsp apple cider vinegar
- 2 tbsp lemon juice
- 1 tsp garlic
- 1 tsp basil
- ½ tsp oregano
- 1 dash sea salt
- 1 dash black pepper
Place first five ingredients together in a bowl.
Add remaining ingredients to a jar (to make the dressing) with a tight-fitting lid and shake vigorously.
Add dressing to salad and gently toss.
Serve & enjoy!
Tip: Add chopped avocado for even more fiber and healthy fat.
References:
http://www.health.harvard.edu/diseases-and-conditions/glycemic_index_and_glycemic_load_for_100_foods
http://lpi.oregonstate.edu/mic/food-beverages/glycemic-index-glycemic-load
https://www.shakeology.com/blogs/2016/01/18/shakeology-glycemic-index/