Diabetes Self-Management Blog

After years of campaigns from both the US Department of Agriculture (USDA) and corners of the food industry, it has become conventional wisdom that consuming more whole grains is a good thing. There are good reasons for this assertion; whole grains tend to contain more fiber and nutrients — such as manganese, selenium, and thiamin — than their refined counterparts. But as a recent study shows, there are plenty of reasons to be skeptical of products that tout their whole-grain content.

The study, conducted at the Harvard School of Public Health and published in the journal Public Health Nutrition earlier this month, examined five different criteria for choosing products that contain whole grains: the industry-sponsored Whole Grain Stamp, a whole grain as the first ingredient, a whole grain as the first ingredient with no added sugars, the word “whole” before any grain in the ingredients list, and a ratio of 10:1 or lower of total carbohydrate to fiber. The USDA often recommends looking for a whole grain as the first ingredient in a food, while the American Heart Association recommends using the 10:1 ratio as a guide. The researchers studied numerous packaged food items and found that those containing the Whole Grain Stamp, as well as those listing a whole grain first or anywhere on the ingredients list, contained more fiber and were less likely to contain trans fat than foods that fulfilled none of the whole-grain requirements. However, these whole-grain-touting foods tended to contain greater amounts of sugar and calories than non-whole-grain foods.

The 10:1 carbohydrate-to-fiber ratio turned out to be the best indicator of nutrition, leading to foods with higher levels of fiber and lower levels of sugar and calories than any of the other whole-grain criteria. This standard, however, may not be as easy to follow as the others, since it requires reading a product’s nutrition label and performing arithmetic. As noted in an article on the study at MinnPost, even this standard may not offer the best possible way to evaluate a food’s nutritional value, since certain types of fiber that add few nutritional benefits may be added to a food and count toward the 10:1 ratio. The article also explains why the Whole Grain Stamp may be such a poor predictor of nutritional value: It signifies only that a food contains at least 51% whole grain by dry weight. This means that up to 49% of the food may consist of added fats, sugars, and other ingredients that are best avoided.

Do you make an effort to include whole grains in your diet? If so, do you use the Whole Grain Stamp as a guide? Do you find that the whole-grain content of foods has any impact, positive or negative, on your blood glucose level? Are certain whole grains, or means of preparing them, better than others? Are there other fiber-filled foods that you believe are better or more important than whole grains when it comes to blood glucose control? Leave a comment below!

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Comments
  1. I’ve worked hard to eliminate wheat and corn from bread ingredients. The battle begins with a bread machine at home, as so far as I know no commercial “bread” fits a diabetic-diet paradigm. It is down to flours of rye, brown rice, sorghum, arrowroot, buckwheat, tapioca, and a few other types. My current choice avoiding gluten, which really does make grains into soft bread, is xanthan gum powder. So far none of the recipes have yielded anything like what most Americans would call “bread”, but result in a loaf of some variety of “cracker” in texture. None of the above seems to raise our blood sugar, but I miss the soft texture of modern breads that are easy to chew.

    Our “bread” can be eaten with dentures in, while most if not all “store-bought” breads require a soon removal and cleaning of gummy residues before engaging in social conversations.

    I gave up on texture, now experimenting with flavors, including yeast, saffron, and spicy southwestern spices & herbs. None of the above is suitable as left-overs, supporting the biblical concept of being thankful for our DAILY bread. Keep the oven extra hot, as apparently there are no remarkable “rising” chemical reactions equal to recipes involving wheat or corn. If anyone has some secret to “rising” without wheat or corn, please say on.

    Posted by Jim Campbell |
  2. Jim Campbell,

    Google “minute muffins” for an odd little bread substitute that is gluten free and very low carb. I make it without sweeteners or sweet spices, sometimes add savory flavors like chives or dill, and sometimes make it plain. The basic ingredients are egg, flaxseed meal, baking powder, and a bit of butter. Easy peasy.

    Posted by Pauline |

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