Glycemic Load Diet
The Glycemic Load Diet
The Glycemic Load Diet, by Rob Thompson, MD is a refinement of earlier low-carbohydrate diets, and aims to reduce the glycemic load in the diet – the impact on blood glucose levels of a serving of a given food, as identified in the Glycemic Index.
The increased consumption of starchy carbohydrates, particularly wheat, is held to blame for the obesity problem. Also, the claim is made that insulin resistance (said to be present in 22% of the population) would be less evident if starchy carbs like rice, potatoes and bread were reduced. Insulin regulates glucose consumption in the body, mainly the muscles. If these become insensitive to insulin (called insulin resistance) then weight-gain results. Refined carbs are the major source of glucose in the diet. For example, it is suggested that no more than a quarter-serving of these foods be consumed at one sitting, alongside cutting out drinks and juices with added sugar.
The Glycemic Load Diet also requires 30-40 minutes of walking every other day, with the objective of activating ‘slow-twitch muscle’ to improve the insulin resistant condition.
Glycemic index/Glycemic load
The glycemic index measures the effect on blood glucose of a given amount of carbohydrate from a particular food source, in comparison to the same amount of carbohydrate in white bread as the standard (set at 100).
The glycemic load corrects that figure for serving size or amount consumed, and it this glycemic load which forms the basis of the Glycemic Load Diet. The advice given is that the total glycemic load in foods consumed each day should be under 500.
Examples of the glycemic load of common baked goods, breads and breakfast cereals.
This list is taken from the Glycemic Load Table in Dr. Thompson’s website as quoted in his book The Glycemic Load Diet.
As such it uses a different formula than other measures of Glycemic Load such as the University of Sydney.
| Food Item | Description | Glycemic Index | Typical American Serving | Glycemic Load |
| White bread | 30 grams-1/2″ slice | 100 | 1-1/16oz | 100 |
| Baked Goods: | ||||
| Oatmeal cookie | 1 medium | 77 | 1oz | 102 |
| Apple muffin-sugarless | 2-1/2″ diameter | 69 | 2-1/2oz | 107 |
| Cookie: average all types | 1 medium size | 84 | 1oz | 114 |
| Croissant | 1 Medium size | 96 | 1-1/2oz | 127 |
| Crumpet | 1 Medium size | 69 | 2oz | 148 |
| Bran muffin | 2-1/2″ diameter | 85 | 2oz | 149 |
| Pastry | Average serving | 84 | 2oz | 149 |
| Chocolate cake | 1 slice (4″X4″X1″) | 54 | 3oz | 154 |
| Vanilla Wafers | 4 wafers | 110 | 1oz | 159 |
| Graham cracker | 1 rectangle | 106 | 1oz | 159 |
| Blueberry muffin | 2-1/2″ diameter | 84 | 2oz | 169 |
| Pita bread | 1 medium size | 82 | 2oz | 189 |
| Carrot cake | 1 square (3″X3″X1-1/2″) | 88 | 2oz | 199 |
| Carrot muffin | 2-1/2″ diameter | 88 | 2oz | 199 |
| Waffle | 7″ diameter | 109 | 2-1/2oz | 203 |
| Doughnut | 1 Medium size | 108 | 2oz | 205 |
| Cup Cake | 2-1/2″ diameter | 104 | 1-1/2oz | 213 |
| Angel food cake | 1 slice (4′X4″X1″) | 95 | 2oz | 216 |
| English Muffin | 1 medium size | 109 | 2oz | 224 |
| Pound Cake | 1 slice (4″X4″X1″) | 77 | 3oz | 241 |
| Corn muffin | 2-1/2″ diameter | 146 | 2oz | 299 |
| Pancake | 5″ diameter | 96 | 2-1/2oz | 346 |
| Breads and Rolls: | ||||
| Tortilla (wheat) | 1 medium size | 43 | 1-3/8oz | 64 |
| Pizza crust | 1 slice | 43 | 3.5oz | 70 |
| Tortilla (corn) | 1 medium size | 74 | 1-1/4oz | 87 |
| White Bread | 1 slice-1/2″ thick | 100 | 1oz | 107 |
| Whole meal rye bread | 3/8″ slice | 97 | 2oz | 114 |
| Sourdough bread | 3/8″ slice | 77 | 1-1/2oz | 114 |
| Oat bran bread | 3/8″ slice | 68 | 1-1/2oz | 128 |
| Whole Wheat Bread | 1 slice-1/2″ thick | 101 | 1-1/2oz | 129 |
| Light rye bread | 3/8″ slice | 97 | 1-1/2oz | 142 |
| Banana Bread-sugarless | 1 slice (4″X4″X1″) | 79 | 3oz | 170 |
| 80% whole-kernel oat bread | 3/8″ slice | 93 | 1-1/2oz | 170 |
| Pita bread | 8″ diameter | 82 | 2oz | 189 |
| Hamburger Bun | Top & bottom-5″diameter | 87 | 2-1/2oz | 213 |
| 80% whole-kernel wheat bread | 3/8″ slice | 74 | 2.25oz | 213 |
| French Bread | 1 slice-1/2″ thick | 136 | 2oz | 284 |
| Bagel | 1 Medium size | 103 | 3-1/3oz | 340 |
| Breakfast Cereals: | ||||
| All Bran | 1/2 cup | 54 | 1oz | 85 |
| Muesli | 1 cup | 69 | 1oz | 95 |
| Special K | 1cup | 98 | 1oz | 133 |
| Cheerios | 1 cup | 106 | 1oz | 142 |
| Shredded Wheat | 1 cup | 107 | 1oz | 142 |
| Grapenuts | 1 cup | 102 | 1oz | 142 |
| Puffed Wheat | 1 cup | 105 | 1oz | 151 |
| Instant Oatmeal (cooked) | 1 cup | 94 | 8oz | 154 |
| Cream of Wheat-cooked | 1 cup | 94 | 8oz | 154 |
| Total | 1 cup | 109 | 1oz | 161 |
| Corn Flakes | 1 cup | 116 | 1oz | 199 |
| Rice Crispies | 1 cup | 117 | 1oz | 208 |
| Rice Chex | 1 cup | 127 | 1oz | 218 |
| Raisin Bran | 1 cup | 87 | 2oz | 227 |
Look here for low glycemic meal ideas here.
See Also
The book The Glycemic Load Diet (available at Amazon) contains about 80 pages of recipes. There are no meal plans as such.


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Find a better source for the Glycemic Load values because they don’t jive with ANY other source available that I’ve found, even considering the “americanized” adjustment or the factor of 10 adjustment the book author claimed to use for some reason.
The values used are used to malign perfectly healthy foods and promote other foods that may have beneficial values but not in excess.
The bottom line is if we didn’t eat an overly processed diet and didn’t work high-stress, overly sedentary lifestyles we wouldn’t need special diets to try to overcome problems that primarily increased over the last 30-40 years with lots of conflicting advice.
TL;DR Everything in moderation works for most. And exercise!
Each food label lists # of carbs. I don’t have a list of glycemic index, so I do I figure the glycemic load by reading the carb list on the food label?
i will be ordering your book the glycemic load diet,
I have the books and would like to try the diet. I did the Atkins diet years ago and lost all the weight I wanted. When I stopped the diet I gained it all back plus more. Now I am borderline diabetic. I read that 500gl,s a day is the lmit. What is the minimum level? I’m not prone to eating a lot of vegies.
The glycemic index measures the ability of a food to rise blood sugar after you eat a it, the higher the GI, the higher the rise of sugar, therefore the higher the insuline response. The glycemic load only takes in consideration the amount of the food you it, as the amount of blood sugar depends also on how much you load yourself with it. The best general advice is to avoid high glycemic foods and to avoid eating more than 100 to 100 grams of carbohydrates a day, depending on age, sex, physical activity, desire of weight loss, etc. spikes ok insuline are atherogenic an lead to heart attacks, strokes and obesity.
To calculate glycemic load (GL): Simply multiply the GI by the amount of carbohydrate and divide by 100.
For example; an 80g serve of carrot with a GI of 92 has 4.2g per serve. 92 X 4.2 / 100 = 3.9
This means you are measuring a serving not 100g all the time
Isn’t the carb used in your formula carbs-fiber?
Thank-you! Your response has helped me figure things out!
Karin, the GI basically measures how much glucose you have in your blood after eating an amount of food that will contain a given amount of carbs (usually, 50g). That means that, for example, if you want to measure the GI of a food that contains 10% of carbs, you will have to eat 500g of this food (in order to eat 50g of carbs).
The GL measure how much glucose you have in your blood after eater a given amount of food. That’s it. This can be more useful to use because if you know the quantity of a food you will eat, it’s easy to measure its impact on your blood glucose; whereas if you use the GI, you have to take into account the % of carbs that is in the food before being able to calculate the impact the food will have on your blood glucose.
Some food can have a high GI but a low GL. For example, watermelon has a GI of 72 (which means that if you eat enough watermelon to reach 50g of carbs, it will raise your blood sugar 0.72 times as much as eating 50g of pure glucose; with glucose as the base with a GI of 100). But since watermelon has A LOT of water, you would have to eat a big amount of watermelon in order to eat 50g of watermelon carbs. So, if you eat only 100g of watermelon you will eat maybe only 5g of carbs. Therefore, the GL of watermellon is low (3.6) even if its GI is high.
In short, the glycemic load takes into account “the amount of food you eat”, while the glycemic index takes into account “the amount of food you would need to eat in order to reach 50g of carbs”. That’s a huge difference.
Hope this helped.
Thank You Florent, it helped me a lot! I’m going to find out more about GL instead of GI!
Thank-you from a ‘newbie’ @ this LGL Diet! Your explanation helped me quite a bit, not just with ‘what can I eat?’ but got the whole idea into perspective for me! I really needed that as I also have to eat gluten-free & that get’s trying rather frequently so throwing this ‘diet twist’ into the ‘mix’ was ‘one more thing to worry about’. Now, not so much! Thank-you!
I am confused between GI Index and GI Loading, any advise would be great.
I just received the book today and I’m a third of the way through it. I’ve always felt better on a low-carb diet and did well on Atkins when I first started but it was too restrictive for long term. I’m really looking forward to starting this since lately I seem to be living on starch; cereal & toast for breakfast, pasta in soup or a sandwich for lunch & dinner depends on what’s available, maybe another bowl of cereal or a sandwich. I know I’ll lose & feel better when I get started on this.
I would like to try the glycemic load diet plan and see if it works for me.
This comment is mostly in reference to Sky’s post:This is the dumbest diet since the all-meat thing. guys, if you want to lose weight, it’s called SELF-CONTROL, FRUITS AND VEGETABLES. Bread; white or wheat will not make you any less obese!!! Small amounts of everything especially starches, with loads of produce are the best thing to do. Seriously. Stop trying to trick people.
This diet helps to eliminate the carbs that cause weight gain around belly which is deadly. “Apple” shapes, or people who carry their weight around their middle are increased for heart disease and my develop diabetes. This diet allows you to eat foods that eliminaate belly fat while still taking in the necessary nutrients. I have known a number of people who’ve tried this and have lost weight and lowered their cholesterol. I’m also not sure why you think startches are good for you… every doctor I know will tell you limit your “white” foods because they are unhealthy.
I give this diet a 5* rating! In two months, I have lost 16 pounds and my husband has lost 35 pounds. I haven’t measured inches yet, but I can see my belly shrink.
Found two errors on the home page of the Glycemic Load diet:
1. The GI measure that is used is a discredited one based on white bread as being 100. Different samples of white bread have different values, and hence this definition is useless. The correct definition is glucose as 100, since glucose is (usually) 100% absorbed by the gut.
2. The overall recommended limit of GL equal to 500 is way too high. Ketosis, the state in which fat is metabolized, is unlikely to be achieved at that high level. Experimentation is needed, but I would imagine that a limit of 100 to 200 GL per day would be more realistic. Remember, the goal is avoiding metabolic disorder, avoiding type 2 diabetes, and losing weight. I’ve achieved all that by limiting my total net carbs to about 30 grams. By using a proper GL measure, this number can safely be increased, but certainly not all the way to 500.
He is not trying to get people to go into ketosis. He addresses that in the book.
this sounds interesting
i am doing south beach
I need to lose 45 pounds, I have HB and a problem with my potassium, will this be a good weight loss program for me. Can you give me a meal plan. Thank you.
sounds like something I can do
This is the dumbest diet since the all-meat thing. guys, if you want to lose weight, it’s called SELF-CONTROL, FRUITS AND VEGETABLES. Bread; white or wheat will not make you any less obese!!! Small amounts of everything especially starches, with loads of produce are the best thing to do. Seriously. Stop trying to trick people.
I would like to know if the food listed are good for people with hypoglycemia as well. thank you
I was recently referred to this site as a guide for hypoglecemia diet.I haven’t tried it yet. i want to know if the food listed are good for people with hypoglycemia. Thank you
I found this article to be very informative. It prompted me to purchase the book.
Please send information on this diet, and how it affects your cholesterol levels. I don’t want to go on medicine. My total is 333.
I just have to say how much I love this diet. I found it easy to understand, easy to follow and based on common sense. The simplicity and freedom of choices within it means its very easy to stay motivated! I recently tried the Dukan diet which is much more restrictive on carbs, and found myself close to fainting after a few days. I have returned to the Low GL philosophy and feel much better for it. I whole-heartedly recommend this diet to anyone who wants to lose weight, especially to people who struggle with diets. Its good to be back
I am a recently diagnosed type 2 diabetic that has been put on a 1400 calorie diet. In the first couple of days alone I lost 3 pounds. Its been 3 weeks now and I’m down 9 pounds and my blood glucose level is steadily decreasing. This GL load stuff is great. I also exercise every other day for at least 40 minutes. You have to reduce your food intake and exercise at the same time to optimize your weight loss. My clothes are getting looser and it gives me the motivation to stick to it 100%.
After a lot of failed attempts at diets, following the Glycemic Load diet is the only diet I’ve followed that’s resulted in significant weight loss for me. After following the program for 3 months (particularly, religiously following the “no solid startches” and “no sugary drinks” rules), I lost 25 pounds. However, to be objective, I’ve not been able to budge much past that 25lb milestone. It could be the diet, or it could be me, as I found the variety of the diet very tiring, and would sneak in servings of startches spread through the week just to get some variety.
In the short-term, my appetite has decreased, and when adhering strictly to the diet as I did in the first 3 months, the urge to snack decreased as well (something a serving of grapes and cheese always tended to fix). Long-term, I can’t attest to, but I love how simple the core rules are: they’ve made adherence (on the whole) much easier.
I have been following the diet outlined in the book, more than faithfully for 5 weeks now. Not only have I not moved the scale at all, I have actually put on a couple of pounds. I don’t understand and don’t know what to do now.
I would like more information on the Glycemic load diet and a list of foods with Glycemic load values
I find this very interesting and would like to know more.
I would like more information on the Glycemic load diet and a list of foods with Glycemic load values