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The Glycemic Index of Rye Bread

by
author image Lorraine Shea
Lorraine Shea writes about yoga, fitness, nutrition, healing, philosophy, art, decorating and travel for magazines and websites including Fit Yoga, Pilates Style and Country Accents. She teaches Anusara-style yoga and specializes in breath technique, active relaxation and therapeutics. She has a B.A. in English from New York University.
The Glycemic Index of Rye Bread
Rye bread has a lower glycemic index than white bread. Photo Credit Monkey Business Images/Monkey Business/Getty Images

The glycemic index measures how carbohydrates affect your blood sugar level. Carbohydrates that break down quickly during digestion raise blood glucose levels and rate high on the glycemic index. Carbohydrates slow to break down score low on the glycemic index. Also helpful to know is a food’s glycemic load, which measures the amount of carbohydrates you intake. Food with a low glycemic index and glycemic load, considered healthier for you, includes most fruit and vegetables, legumes, nuts and whole grains, such as rye bread.

Rye Rating

Whole-grain products maintain the integrity of the original wheat, while refined grains lose nutrients and fiber during processing. One slice of rye bread has a glycemic index of 41 and a glycemic load of 5, according to the Linus Pauling Institute at Oregon State University. In contrast, one slice of white bread, made from refined grains, has a GI of 73 and a GL of 10. A high glycemic index is considered 70 or more, and low is 54 or less; a high glycemic load is 20 or more, and low is 10 or less.

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Blood Sugar Levels

The rapid increase of blood sugar level after eating high-glycemic index foods – such as white bread, potatoes, white rice, breakfast cereal, baked goods and sweets -- signals the pancreas to secrete more insulin. High levels of insulin can then sharply decrease blood sugar to dangerously low levels and eventually lead to various health problems. On the other hand, eating foods with a low glycemic index sustains a more even distribution of blood glucose and allows the pancreas to function more efficiently.

Benefits

Other benefits of eating rye and other food with a low glycemic index include a decreased risk of diabetes, cardiovascular disease, diverticulitis, constipation, gallstones and cancer, decreased inflammation, insulin-resistance and LDL -- or “bad” -- cholesterol, and help with weight loss.

Dietary Choices

A low-glycemic index diet emphasizing rye bread, beans, lentil and nuts results in better glycemic control and lower risk for coronary heart disease when compared with a diet high in “brown” cereal fiber – whole-grain breads and cereals, brown rice and potato skins, according to a study published in the Dec. 17, 2008, issue of the “Journal of the American Medical Association.” Both diets included three daily servings of fruit and five daily servings of vegetables. The study concluded that “low-glycemic index diets may be useful as part of the strategy to improve glycemic control in patients with type 2 diabetes taking anti-hyperglycemic medications.”

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References

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