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Is Toast Less Nutritious Than Fresh Bread?

By
Monica Reinagel, MS, LD/N, CNS

Q. Does toasting bread kill the yeast or nutrients? Is fresh bread more nutritious than toast?

A. The yeast are already dead--they would not have survived the temperatures needed to bake the dough into bread. And technically, you can’t "kill" vitamins and minerals because they were never "alive" to begin with. Nutrients can be degraded or destroyed by heat. But, again, this will already have occurred during the baking process.

However, there are 2 ways that toasting does affect the nutritional qualities of bread:

  1. Toasting can have a small beneficial effect on the glycemic impact of the bread. In other words, toasted bread may cause a slightly lower elevation of blood sugar than fresh bread. 

  2. On the other hand, toasted bread is higher in acrylamide.

In the end, the nutritional differences between fresh and toasted bread are not significant enough to make a strong case for choosing one over the other.

See also:  Acrylamide in Food: Should You Be Worried?

Image courtesy of Shutterstock

About the Author

Monica Reinagel, MS, LD/N, CNS

Monica Reinagel is a board-certified licensed nutritionist, author, and the creator of one of iTunes' most highly ranked health and fitness podcasts. Her advice is regularly featured on the TODAY show, Dr. Oz, NPR, and in the nation's leading newspapers, magazines, and websites. Do you have a nutrition question? Call the Nutrition Diva listener line at 443-961-6206. Your question could be featured on the show. 

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