What is the Glycemic Index and Glycemic Load?

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.

So, you can probably guess that pure glucose is given a GI rating of 100. On the other hand, chickpeas are right down there at a GI of 10.

Regarding GI: low is anything under 55; moderate is 56-69, and 70+ is considered a high GI food.

Remember, this is a measure of how fast a carbohydrate containing food is digested and raised 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.

FUN FACT: Can you guess which food has a GI of higher than 100? (Think of something super-starchy) White potatoes! They have a GI of 111.

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.

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 I have for you.

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:

About No Limits

No Limits Fitness provides step-by-step programs to help busy adults get the body they’ve always wanted, without restrictive diets or time-consuming workouts, so they can lead more fulfilling lives. Life is a much better experience in a strong, healthy body!

Recent Posts

Crunch-Free Zone: 5 Exercises For Stronger Abs

By Will Matthiessen • 19 Apr, 2024
Crunches.  The go-to core exercise for a lot of gym goers. Yet, it’s one of the worst ab exercises you can do. Shocking, I know. You’re probably wondering why it’s one of the worst. Crunches put force on your spine and oftentimes strain on your neck. They force your spine into flexion, which is generally what people are told not to do in order to protect their back. Aside from the pressure it puts on your spine, crunches don’t activate your core muscles to the extent that a lot of other dynamic core exercises do. If your goal is to have sculpted abs like a lifeguard on Baywatch, crunches are not your solution. Aside from the aesthetic aspect, a strong core is important for your body’s balance and stability, posture, and reduction of back pain and other injuries. If you want to develop a rock hard core, here is a list of exercises better than the old fashioned crunches that you can start incorporating into your workouts: The Hard Style Plank Put your forearms on the ground and your arms set shoulder width apart. Your arms should be parallel to your body. Once you’re up in the plank, imagine squeezing your elbows to your knees and your knees to your elbows. Don’t be surprised if you start shaking like a leaf as soon as you create that tension. Dead Bugs Lie on your back with your arms straight up and your hands above your shoulders. Bend your legs at a 90-degree angle with your toes facing up at the ceiling. Imagine pushing your belly button into the ground and keeping your body tight enough to where if someone was pulling on your limbs, you’d be able to resist it. Next extend your right arm and left leg at the same time, without touching the ground. Keep pushing your belly button into the ground to avoid arching your back. The right leg that is still bent should stay completely still while the other leg is in motion. Bring your arm and leg back into the start position and then switch sides. When it comes to Dead Bugs, one of our favorite sayings applies: “Slowly is holy. Faster is disaster.” If you want to increase the intensity, add a kettlebell to the stationary arm. If you want to significantly increase the intensity, press the kettlebell once you’ve reached the fully extended position. Reverse Crunches Lie down flat with your back on the floor and your legs straight down, toes pointed up. Press your lower back into the floor and pull in your belly button as you lift your legs together up off the floor. Push your heels through the ceiling at the top and slowly lower them back to the ground. Fun, right? Double Kettlebell March Hold two heavy kettlebells in the racked position. Pull your belly button to your knees and your knees to your belly button to find max tension in your core. Once you feel that tension, slowly lift one knee up 90 degrees and then switch legs. Hollow Rocks I’ve saved the worst (I mean best) for last. Lay down on the ground with your legs a little bit off of the ground as well as your shoulder blades and head. With arms extended over your head, rock back and forth like a banana rocking back and forth on a counter. Or a see-saw…take your pick. Alright, now that I’ve given you the secret sauce to getting rock hard abs, it’s time to get to work people!

How To Lose Weight Without Counting Calories

By Juan Perez • 05 Apr, 2024
One of the first recommendations you’ll hear for someone wanting to lose weight is to begin by counting calories. Although weighing your food and counting calories does work for some people, the reality is that this approach to weight loss has an astonishingly high failure rate. If this strategy is “based in science”, why does it fail more than 95% of the time? The Top 3 Issues With Counting Calories The number of calories in the foods you eat are estimates. This is where the concept of counting calories being “based in science” can be misleading. The FDA allows companies to use 5 different formulas to estimate calories and a standard deviation up to 20% is acceptable. This means that something listed as 150 calories exists on a range between 120 calories and 180 calories. How ripe is your banana? The ripeness affects caloric availability. The second issue is that as individuals we each absorb a different amount of the calories from the food we consume. Thirdly, Americans are notoriously bad at determining healthy portion sizes. Our super-sized culture has heavily influenced our concept of a normal sized portion. The good news is that there is another way to lose weight without counting calories. The Three Pillars of Nutrition Whether or not you’re a card-carrying member of Camp Calorie Counters, the foundation of your nutrition is built upon three pillars: Food Quality, Food Quantity and Food Timing. Food Quality All calories are not created equal. The popular 100 calorie snack bags do not offer the same nutritional value as 100 calories from fruits or vegetables. When the majority of your meals are composed of minimally processed single ingredient whole foods (lean protein, fruits and vegetables), you’re more likely to get the micronutrients your body needs to thrive. Food Quantity As mentioned earlier, Americans aren’t known for our skills at eyeballing healthy portion sizes. Although using a food scale to determine portion sizes can be helpful, it isn’t always practical. This is the reason we recommend learning to use your hand as a guide to determine portion sizes. You can’t take a food scale with you everywhere you go but you’re always allowed to bring your hands!

Six Movement Patterns Your Program Needs

By Chava Cruz • 07 Mar, 2024
There are six fundamental movement patterns that every good program will include. Push, pull, hinge, squat, lunge, and loaded carry. These are all everyday movements that our bodies need in order to function more efficiently. Push Incorporating a variety of push exercises like the bench press, shoulder press, triceps presses and push-ups will help strengthen your upper body muscles. These exercises primarily target our chest, shoulders and triceps. Don’t want the wings under your arm that shake real bad when you wave? Start pushing.  We use push movements with tasks as simple as pushing doors open and pushing grocery carts to more difficult tasks like lifting ourselves up from a seated position. Pull Pull exercises are the counter to push, creating a balance. They primarily target our back, biceps and rear delts. It is crucial to have just as many pulls in your plan to avoid injury and overuse of your upper body muscles. Some popular pull exercises include bent over rows, single arm row, lat pull downs and trx rows. Aside from your muscles getting stronger, these exercises will improve your posture and help you pick things up like kids and animals. No kids or animals? You still have to pick up groceries or laundry, nice try. Hinge Hinging is something we do often without realizing it. It primarily targets our hips, lower back, glutes and hamstrings. Some of the most common hinge exercises are deadlifts, kettlebell swings, and hip thrusts. Performing hinge movements will help improve your stability, flexibility and hip mobility on top of strengthening your lower body. The more mobile and flexible you are, the easier it is to move. Hinge exercises will also stabilize your core muscles which is the root of everything. Daily tasks that mimic the hinge movement are bending over to lift heavy objects and bending to prepare to sit or stand. Squat Similar to pull being the counter to push.. The squat is the counter to hinge. You shouldn’t have one without the other. It’s kind of like having a plate of food without the silverware. You could do it, it’s just going to get messy. Squats primarily target the quads, hamstrings and glutes. Some of the most common types of squats include goblet squat, back squat, front squat, overhead squat and sumo squat. Performing these exercises will strengthen your lower body muscles and improve your core and stability. Daily tasks that involve squats include lifting heavy objects (after you’ve performed a hinge to go and get it), sitting down and standing up. Lunge Everyone's favorite, lunges. Aside from creating rock hard quads, the lunge is essential to a functional body and injury prevention. Reverse lunges, forwards lunges, lateral lunges and split squats are all examples of what you can incorporate into your program. Imagine falling and not being able to get back up. Not everyone wants to rely on life alert. Practicing and staying consistent with lunges will help allow you to avoid a fall in the first place because of the stability they create, but also to be able to actually get yourself up off of the ground when you need to. Loaded Carry Ah, loaded carries. You either hate them or love them but either way you’re going to be stuck doing them at some point. Loaded carries create a strong core which in return helps with your balance and stability. They will also improve your grip strength. Carrying groceries from the store to your car becomes a lot easier the more you practice these. Different types of carries include farmers, suitcase, racked, overhead, and mixed. We carry things every single day and we do it in different ways depending on the object. Include a variety of carries in your program so you’re prepared to carry anything. Conclusion Performing all six of these movement patterns every week will ensure that you are moving better day to day. The better we function and move properly, the better we feel and the healthier we will be. If you would like to meet with one of our experienced personal trainers to discuss incorporating these 6 movement patterns in your training program, click on the button below to schedule a free consultation.
Show More
Share by: