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Beware of Whole Wheat Bread


Wholegrain, whole wheat, sourdough, rye, gluten-free: so little time, so much bread, but one marketing strategy: they all so good for you! Is it really true? Let’s decrypt the science.

1.How each bread type is marketed

Whole wheat=wholemeal bread. The word “whole” is referring the white bread. It is made from the same grain as the white bread (wheat), but contains the entirety (or almost) of the grain.

It contains a larger quantity of certain vitamins (B6), minerals (magnesium, iron) and fibers. However, the quantities are not that different, if you have a salad or some nuts you should be fine.

Rye Bread is made from rye grains (“seigle” for French readers) it contains a lot of fibers and is usually colored with caraway (also helps avoid bloating caused by all the fibers). It can sometimes be colored with caramel or coffee.

Sourdough is any kind of bread (usually whole wheat) with extra bacteria culture which is supposed to help digestion as well as the absorption of certain minerals and vitamins.

2.How Much Carbohydrate they Actually Contain

Below is a comparison on nutritional content (as per the Diabetes UK organisation).

Low carb alternatives include:

Low carb zone seeded bread: 3.7g carbs/slice (available on Ocado’s website)

Atkin’s Breadmix: 9.3g/slice (available on Amazon)

3.What Research has Shown

Several studies comparing wholemeal and white bread showed that they both have the same effect on glycemia. We should therefore not be fooled by labels and marketing strategies. One study even showed that these breads had the same impact as glucose.

There is nonetheless one winner, which was the rye bread. It had a smaller effect on glycemia when compared to wholemeal and white bread.

Disclaimer:

This is not a sponsored article

References:

1.Capriles VD, Arêas J a. G. Approaches to reduce the glycemic response of gluten-free products: in vivo and in vitro studies. Food Funct. 2016 Mar;7(3):1266–72.

2. Goletzke J, Atkinson FS, Ek KL, Bell K, Brand-Miller JC, Buyken AE. Glycaemic and insulin index of four common German breads. Eur J Clin Nutr. 2016 Jul;70(7):808–11.

3. Gonzalez-Anton C, Rico MC, Sanchez-Rodriguez E, Ruiz-Lopez MD, Gil A, Mesa MD. Glycemic responses, appetite ratings and gastrointestinal hormone responses of most common breads consumed in Spain. A randomized control trial in healthy humans. Nutrients. 2015 May 27;7(6):4033–53.

4.Kristensen M, Jensen MG, Riboldi G, Petronio M, Bügel S, Toubro S, et al. Wholegrain vs. refined wheat bread and pasta. Effect on postprandial glycemia, appetite, and subsequent ad libitum energy intake in young healthy adults. Appetite. 2010 Feb;54(1):163–9.

5.Yusof BNM, Abd Talib R, Karim NA, Kamarudin NA, Arshad F. Glycaemic index of four commercially available breads in Malaysia. Int J Food Sci Nutr. 2009 Sep;60(6):487–96.

6.Liljeberg H, Björck I. Bioavailability of starch in bread products. Postprandial glucose and insulin responses in healthy subjects and in vitro resistant starch content. Eur J Clin Nutr. 1994 Mar;48(3):151–63.

7.Heinonen L, Korpela R, Mantere S. The effect of different types of Finnish bread on postprandial glucose response in diabetic patients. Hum Nutr Appl Nutr. 1985 Apr;39(2):108–13.

8.https://www.diabetes.org.uk/guide-to-diabetes/enjoy-food/carbohydrates-and-diabetes/bread-and-diabetes


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